SPHINX Project10 Service Manual

2 1. UNPACKING.......................................................................................................................................3 2. SPHINX WARRANTY CARD..............................................................................................................3 3. CONTACTING THE MANUFACTURER.............................................................................................3 4. THE AMP AT A GLANCE...................................................................................................................4 Front panel...................................................................................................................................................4 Rear panel ...................................................................................................................................................5 5. SPHINX REMOTE CONTROL............................................................................................................6 Buttons and LED indication..........................................................................................................................6 Operation .....................................................................................................................................................7 Selecting without switching ..........................................................................................................................7 Batteries.......................................................................................................................................................7 Encountering problems... .............................................................................................................................7 6. TECHNICAL SPECIFICATIONS.........................................................................................................8 7. GENERAL CHECKLIST .....................................................................................................................9 Protection modes.........................................................................................................................................9 Short Circuit.............................................................................................................................................9 Standby mode..............................................................................................................................................9 Necessary Equipment..................................................................................................................................9 8. ADJUSTMENT PROCEDURES........................................................................................................10 Bias............................................................................................................................................................10 Offset .........................................................................................................................................................11 9. PROBLEMS AND SOLUTIONS .......................................................................................................12 10. DIAGRAMS AND PARTS LISTS....................................................................................................13 Connection diagram bias adjustment.........................................................................................................14 Connection diagram offset adjustment.......................................................................................................15 Connections main board and display board of Project 10..........................................................................16 General overview Project 10......................................................................................................................17 Project 10 power supply and input selection..............................................................................................18 Project 10 volume board ............................................................................................................................19 Project 10 amplifier left ..............................................................................................................................20 Project 10 amplifier right ............................................................................................................................21 Project 10 control.......................................................................................................................................22 PCB drawings of Project 10 .......................................................................................................................23 Parts list .....................................................................................................................................................24

3 The Sphinx Project Ten design The Sphinx Project Ten was designed for the ever- increasing group of quality-conscious audiophiles. We are very proud of the tradition connected with the SPHINX name, especially concerning audio quality perfection. This service manual will help you to optimally service and repair the Sphinx Project Ten Integrated Stereo Amplifier This integrated high-end stereo amplifier is of exceptional quality. With exception of the balanced input section, it is of discrete design throughout (no IC's are used). The pre-amp section is built around Dual FET's and the amplifier is DC-coupled from input to output. The two mono power amps (each channel is totally independent) use special power transistors with a power bandwidth of over 20 MHz, a very fast slew rate and an unsurpassed phase linearity over the power bandwidth. The amplifiers are therefore very stable and can effortlessly drive every type and format of loudspeaker (even the most complex ones such as electrostatic and magnetostatic...) at maximum quality. All internal audio cabling is Siltech pure silver and the amp outputs are sent to the loudspeaker connectors via heavy duty, completely sealed gold- plated relays. To obtain the maximum quality from this integrated amp it is necessary for it to be properly aligned and to be used with top quality audio components, preferably other Sphinx components. 1. UNPACKING Before leaving the factory every Project Ten is subjected to stringent and extensive technical and exterior quality inspection. This ensures the user many years of high quality audio from a perfect- looking product. We recommend owners to ship the Project Ten in its original carton. After unpacking the Project Ten we therefore recommend you carefully check it for any transport damage. If you find any damage and the product has not been shipped in the original carton the ensuring repair costs will not be covered by the warranty. 2. SPHINX WARRANTY CARD To be entitled to any warranty repairs the owner must have send the filled out warranty card to Sphinx or a distributor where it has been registered. Other regulations may apply in your specific country: when in doubt, please consult the proper authorities. 3. CONTACTING THE MANUFACTURER In case of any problem not covered in this manual or if you have other questions you may contact the Sphinx International Service Department in The Netherlands (local time: GMT +1h) during office hours at the following numbers: Telephone (+31) 35 602 0302 Fax (+31) 35 602 2806 E-mail [email protected] It is always very helpful and efficient if you have all relevant information about the specific product and the problem ready. Please also refer to the User Manual of the Project Ten for information about functions not described in this manual. It is important to familiarise yourself with the special functions, operation and possibilities of the Sphinx Project Ten.

4 4. THE AMP AT A GLANCE Front panel 1. VOLUME: With this motor-controlled knob you may adjust the volume of the loudspeakers. The volume can be controlled manually or via the optional Remote Control. 2. STANDBY: To switch the component on and off. When the component is 'off' (standby) this is indicated by the red LED. When the component is active the LED will be green. 3. MUTE: Press this button to temporarily mute the sound. The red LED will light. 4. CD: To select the CD input. 5. TUNER: To select the TUNER input. 6. LINE 1: To select the LINE 1 input. 7. LINE 2: To select the LINE 2 input (cinch or balanced). 8. TAPE MON: To select the TAPE IN input. As soon as you have pressed one of the buttons 5. to 9. the corresponding red LED next to it will light. 9. PHONES: To connect dynamic stereo headphones. 1 2 3 4 5 6 9 7 8

5 Rear panel 11. ON/OFF: This is the mains power switch. 12. Fuse holder: Contains a fuse (3.15 A slow). 13. AC Power: Connect the mains cable to a mains power outlet (230 - 240 VAC). 14. CONTROL OUT: To connect the optical cable going to another Sphinx component. 15. RIGHT OUTPUT: To connect the cable from the right loudspeaker: red + white - 16. LEFT OUTPUT: To connect the cable from the left loudspeaker: red + white - 17. Manufacturer's label: This shows important data for the component, such as serial number and mains power voltage. 18. BALANCED LINE 2 RIGHT: To connect the XLR signal cable (balanced cable) from the right output of the signal source for Input 2. 19. BALANCED LINE 2 LEFT: To connect the XLR signal cable (balanced cable) from the left output of the signal source for Input 2. 20. CINCH/BALANCED: This switch is to select the input connector for LINE 2: out LINE 2 (cinch) in BALANCED LINE 2 21. LINE 2: To connect the cinch signal cable from the signal source for LINE 2. 22. LINE 1: To connect the cinch signal cable from the signal source for LINE 1. 23. TUNER: To connect the cinch signal cable from the tuner. 24. CD: To connect the cinch signal cable from the CD player. 25. TAPE IN: Connect this input to the output of the recorder. 26. TAPE OUT: Connect this output to the Input of the recorder.. 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

6 5. SPHINX REMOTE CONTROL This single Sphinx Remote Control lets you control all functions: not only of the Project Ten, but of all other Sphinx equipment. Only the following buttons and indications on the Remote apply to the Project Ten (the others will not function): Buttons and LED indication 1. PRE-AMP: To select the amp. All buttons pressed hereafter will only control the amp functions. The buttons TUNER and CD will have no effect on the amp. 2. STANDBY: Use this red button to switch the Project Ten to stand-by. 3. : Pressing this green button mutes the outputs (temporarily) and you will not hear any sound. The red LED will be illuminated. Another press on this button un-mutes the outputs 4. TAPE/MONITOR: Use this button to select the Tape IN input. Pressing this button has the same effect as pressing the TAPE button on the front panel. Note: The LED of the selected input (see 5.) will remain illuminated. 5. 1 - 4: To select inputs CD to Line 2 . 1 CD 2 Tuner 3 Line1 4 Line 2 6. � button: Pressing this button has the same effect as clockwise rotating the VOLUME control on the front panel. You will increase the volume. 7. � button: Pressing this button has the same effect as anti-clockwise rotating the VOLUME control on the front panel. You will decrease the volume.

7 Operation The Sphinx Remote is used for several different models and can therefore transmit different control codes, depending on which model has been selected with the select buttons (1.). Important: Always press the PRE-AMP button before you send a command (even if you only have one Sphinx component). If not it is possible that although the Remote will send a signal (LED blinks) nothing happens because the transmitted signal is not 'recognised' by the component. Indoors the Remote may be used up to a distance of 7 meter, provided there is no strong sunlight in the room and if you aim the Remote at the component. Always aim the Remote straight at the front panel of the component, the maximum offset angle is 30°. Selecting without switching Suppose for instance that you would like to select the Tuner to Radio 4 without interrupting the CD playback. In that case you momentarily depress (not longer than 0.5 sec) the 'TUNER' button and the '4' button. The same procedure is used for the other system components How to operate the Remote Control with the different Sphinx components will be explained in the corresponding User Manual of each component. Batteries The four batteries have a life span of approx. one year during normal use, but shorter when used more intensely. Replacement batteries: 1.5 V, model penlight or AAA . You may also use rechargeable 1.5 V batteries. Note: Position the new batteries exactly as shown in the illustration at the bottom of the battery compartment, otherwise the Remote will not function! Encountering problems... Remote Control does not work Wrong component selected Select the correct one Distance to component exceeds 7 m Use remote at closer range Angle between Remote and component exceeds ±30° Decrease angle Sensor window on front dirty Clean window Batteries empty or incorrectly placed Use new batteries or replace the old ones correctly Strong (sun)light in room Shade off Component is not switched on (!) Switch it on Component reacts differently than expected or not at all Wrong component selected Select the correct one Component or remote does not function Check component with it's original remote Batteries of remote empty Use new batteries

8 6. TECHNICAL SPECIFICATIONS Bandwidth 0 - 60,000 Hz (+0/-3 dB with RF input filter) Phase response error <15° (from 0 - 20,000 Hz) Gain 21 dB max. Minimum Power Output (1 - 20.000 Hz) >2x 80 W into 8 Ω (19.0 dBW), THD <0.01% >2x 120 W into 4 Ω (20.8 dBW), THD <0.02% >2x 160 W into 2 Ω (22.0 dBW), THD <0.02% Output voltage / current, max. 34 V / 20 A THD+N (IHF-A) <0.01% (80 W into 8 Ω) IMD <0.03% S/N ratio (IHF-A) >106 dB Channel separation >80 dB (1 - 20,000 Hz) Slew rate >25 V/µs Damping factor >200 (1 - 20,000 Hz) Inputs XLR, balanced cinch, unbalanced 1x Line 2 1x Line 2, 1x Line 1, 1x CD, 1x Tuner, 1x Tape level, nominal 0.15 V (-16.5 dBV) for 60 W into 8 Ω impedance 20 kΩ (3 kΩ balanced) Outputs cinch 1x Tape level 10 V max. (20 dBV) (1 - 20,000 Hz, THD <0.01%) headphones 1x 6.3 mm stereo jack, adjustable level clamp 1x loudspeaker L, 1x loudspeaker R Supply capacitance 54,400 µF per channel Power consumption 480 W max. (57.5 W standby) Dimensions (h x w x d) 110 x 482 x 330 mm Weight 12 kg This unit conforms to the EMC interference regulations from the EU and to the CE standards. This unit complies with safety regulation VDE 0860 and thus with international safety regulation IEC 65. Technical specifications can be changed by SPHINX without prior notice if technical developments make this necessary. ©1998 Audioscript BV

9 7. GENERAL CHECKLIST Before you test or service the Project Ten please check the following items. They will give information about the current status of the amplifier. Protection modes The Project Ten has one protection mode. Short Circuit If the Left or Right output is shorted, fuse Z1 or Z2 will blow respectively. Standby mode The Project Ten will switch to Standby Mode if the: • Standby button on the front panel or • Standby button on the Remote is pressed. In this Mode the following will happen: • The output relay is switched off. • The Control Output will be activated (red light). • The bias current for the Left and Right amplifiers is reduced to 0 mA thus greatly decreasing the operating temperature. Necessary Equipment To properly service the Project Ten you need some specific measurement equipment and use a specific set-up. For the correct measurement set-up and hook-up please refer to the drawing titled “Connection Connection diagram… at pages 14 and 15. � 2x millivolt-meter (Ri >1 MΩ) � 2x non-inductive load resistor 8 Ω / 100 Watt � 1x harmonic distortion analyser (internal distortion <0.0005%, measured without filters) � 1x 2-channel oscilloscope (minimum bandwidth >60 MHz) � 1x connection unit / switch box (to connect scope, resistors and amp outputs to distortion analyser) � 2x shorting connector (for balanced pre-amp inputs) � 2x balanced cable set (to connect distortion analyser to Project Ten)

10 8. ADJUSTMENT PROCEDURES The Project Ten is an integrated amplifier, meaning the pre-amp and power amp sections are combined into one cabinet. The Project Ten only has two parameters for each channel (so four in total) that might need adjustment: - Bias: to set the bias current and bias voltage of the amplifier for normal use. - Offset: to set the DC-offset voltage of the output. These adjustments might be necessary when the amplifier has been used for a period of time (and settings have changed due to ageing) or when a part of the Project Ten have been replaced. Attention: When re-adjusting any setting please ensure that there is no loudspeaker connected to the output! Otherwise the loudspeaker may be seriously damaged. Attention: The amplifier is able to generate high output voltages of over + or -40 V. Please be very careful during the adjustments! The Project Ten is a two channel amplifier. After removing the top cover plate you will see the Left and Right Channels clearly marked. The power transistors are mounted underneath the heatsinks. Bias With this procedure you set the proper bias level for the power transistors. This ensures their Class A operation at low power levels. Connect the amplifier according to the drawing “Connection Diagram Bias Adjustment” (page 14). The input of the amplifier must be shorted (by way of the MUTE function of the oscillator). • Switch the amplifier ON and wait until it has reached the proper working temperature (this takes an hour). • Set the millivolt-meter to the DC-range. • Place the two measuring clips of the meter across one of the emitter resistors Left: R267, R271, R273, R277 Right: R467, R471, R473, R477 (refer to schematic in Pj10main.PDF). These resistors are positioned to the left of the power supply condensers. • The level for each should be 40 mV DC (±2 mV). If not: adjust potmeter P202 (Left) or potmeter P402 (Right) until the level is 40 mV. • Switch the oscillator on and set it to 1 kHz and a level of 0 dBu. • Check the distortion with a THD analyser: it should be conform the specified values (0.01% IHF-A @ 1 – 20 kHz @ 80 W into 8 ohm). • If this is correct the procedure is finished. • You may now switch off the amplifier or continue with another adjustment procedure.

11 Offset The Offset adjustment procedure minimises the DC offset value of the amplifier output. This DC offset is important when capacitive loads are used, such as electrostatic loudspeakers. These loudspeakers often use a very low-impedance step-up transformer. The amplifier ‘sees’ this load as a short for the DC voltage. Connect the amplifier according to the drawing “Connection Diagram Offset Adjustment” (page 15). The input of the amplifier must be shorted (by way of the MUTE function of the oscillator).. • Switch the amplifier ON and wait until it has reached the proper working temperature (this takes an hour). • Set the millivolt-meter to the DC-range. • Place the measurement clips of the meter over the output terminal. • The level should not exceed +5 or -5 mV DC. If not: adjust potmeter P201 (Left) or P401 (Right) until the level is within this range. • Switch the oscillator on and set it to 1 kHz and a level of 0 dBu. • Check the distortion with a THD analyser: it should be conform the specified values (0.01% IHF-A @ 1 - 20 kHz). • If this is correct the procedure is finished. • You may now switch off the amplifier or continue with another adjustment procedure. Attention: Do not connect speakers on the Project 10 when adjusting the offset. Please be careful during the adjustments!

12 9. PROBLEMS AND SOLUTIONS At the moment of writing the Project Ten has no known specific problems. If in the future you encounter any problem(s) you may enter the info in this table. This table can then be used for future reference. Please also send (by fax or e-mail) the specific information to the Sphinx International Service Department (see page 3): this info can then be added to the general database to aid others. Problem Cause Solution Refer to page… Amplifier doesn’t work Fuses are blowed (short circuit output) Replace fuses type 3.15A SB Page 18

13 10. DIAGRAMS AND PARTS LISTS The next pages contain the front and rear panel lay-out and a complete set of schematic drawings including the associated parts lists (if applicable). Connection diagram bias adjustment .........................................................................................................14 Connection diagram offset adjustment .......................................................................................................15 Connections main board and display board of Project 10 ..........................................................................16 General overview Project 10 ......................................................................................................................17 Project 10 power supply and input selection ..............................................................................................18 Project 10 volume board.............................................................................................................................19 Project 10 amplifier left...............................................................................................................................20 Project 10 amplifier right.............................................................................................................................21 Project 10 control .......................................................................................................................................22 PCB drawings of Project 10........................................................................................................................23 Part list .......................................................................................................................................................24

14 Connection diagram bias adjustment out1 out2 inp2 inp1 gnd THD Amplitude Frequency Oscillator THD out (+) (-) (+) (-) THD ANALYZER out1 out2 inp2 inp1 Scoop SWITCH-BOX Right Left (+) (+) (-) (-) Amplfier (30x) A B Project 10 GND

15 Connection diagram offset adjustment out1 out2 inp2 inp1 gnd THD Amplitude Frequency Oscillator THD out (+) (-) (+) (-) THD ANALYZER out1 out2 inp2 inp1 Scoop SWITCH-BOX Right Left (+) (+) (-) (-) Amplfier (30x) A B Project 10 GND mV mV GND

16 Connections main board and display board of Project 10 +12V +5V GND L2 L1 TU CD TM TS STB VOL1 VOL2 MU 12V-SW IN-L IN-R PRE-L PRE-R +12V +5V GND L2 L1 TU CD TM TS STB VOL1 VOL2 MU 12V-SW IN-L IN-R PRE-L PRE-R +12V +5V GND L1 L2 TU CD TM TS STB MU VOL1 VOL2 12V-SW +12V +5V GND L1 L2 TU CD TM TS STB MU VOL1 VOL2 12V-SW PJ10 main board PJ10 control board IN-L IN-R PRE-L PRE-R GND VOL1 VOL2 IN-L IN-R PRE-L PRE-R GND VOL1 VOL2 PJ10 volume board IN-L IN-R PRE-L PRE-R GND +12V +5V GND L1 L2 TU CD TM TS STB MU VOL1 VOL2 +12V +5V GND L1 L2 TU CD TM TS STB MU VOL1 VOL2 12V-SW 12V-SW VOL1 VOL2 GND FUSE MAINS SWITCH MAINS FILTER TRANSFORMER CN103 (RED) CN104 (YELLOW) CN105 (BLUE) CN106 (GRAY) CN107 (GREEN) CN108 (PURPLE) MAINS INLET 33V 33V 14V IN-L IN-R PRE-L PRE-R PURPLE ORANGE

17 General overview Project 10 PRE-L +44V GND -44V OUT-L -15V-L +15V-L PRE-L +44V GND -44V OUT-L -15V-L +15V-L GND +44V PRE-R -44V OUT-R -15V +15V GND +44V PRE-R -44V OUT-R -15V +15V +12V +5V +44V GND -44V MUTE STB TM L1 CD L2 TU OUT-L OUT-R MU +12V +5V +44V GND -44V MUTE STB TM L1 CD L2 TU OUT-L OUT-R MU +12V GND IN-L IN-R OUT-L OUT-R MUTE -15V-L +15V-R -15V-R +15V-L +12V GND IN-L IN-R OUT-L OUT-R MUTE -15V-L +15V-R -15V-R +15V-L +12V +5V +44V -44V GND STB PRE-L OUT-L PRE-R OUT-R -44V GND +44V IN-L IN-R OUT-L OUT-R TM CD L1 L2 TU +12V GND OUT-L OUT-R PJ10 left channel PJ10 right channel PJ10 input/output PJ10 power supply +15V-L -15V-L +15V-R -15V-R +15V-L -15V-L +15V-R -15V-R MU MUTE MUTE +44V GND -44V

18 Project 10 power supply and input selection Z1 3.15A Z2 3.15A B101 B102 + C109 + C110 + C111 + C112 + C113 + C114 + C115 + C116 GND +44V -44V 8 X 6800U/50V -44V GND +44V B103 R111 1R00 + C107 1000U Vout Vin GND Q102 7812 C108 100N + C106 47U/25V R103 10K0 R102 10K0 R106 10K0 R105 10K0 R108 100K R107 100K R104 22K1 R109 47K5 R101 10K0 R110 33K2 Vout Vin GND Q101 7805 C102 100N + C101 C16V/1U5 T107 BC556 T101 BC546 T105 BC546 T106 BC546 T104 BC546 REL103A TUNER REL104A LINE1 REL105A LINE2 D105 D102 D104 D103 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 CN102 18PIN REL101A TAPE-MON D101 REL102A CD + C105 47U/25V + C104 330U/50V + C103 330U/50V D106 1N4148 STB +12V +5V MU MUTE +12V +5V MU +12V TS GND STB TM +5V CD +5V TU VOL2 L1 VOL1 L2 12V-SW TM CD TU L1 L2 1 2 OPTO201B 1 2 OPTO401B OPTO101 R112 1K00 OUT-L OUT-R 35V 8 X 220pF STYROFLEX 125V of 160V op onderzijde solderen D101 t/m D106 : 1N4148 GND +12V GND +44V +12V +5V GND -44V D107 6V8 12V-SW CN103 CN104 CN105 CN106 CN107 CN108 T102 BD880 T103 BC517 heatsink 1 2 CN109 +5V TS temperature sensor (optional) REL101B REL102B REL103B REL104B REL105B REL101C REL102C REL103C REL104C REL105C CN112B CN111A CN110A CN112A CN111B CN110B R301 4K75 R501 4K75 R479 1K00 R480 1K00 R481 100R R280 1K00 R281 100R R279 1K00 S101A S101B 2 3 6 7 4 1 5 IC301 SSM2143 R303 1K50 R304 1K50 R302 100R + C302 47u + C303 47u C301 100n C304 100n GND GND GND 1 3 2 CN113 XLR 2 3 6 7 4 1 5 IC501 SSM2143 R503 1K50 R504 1K50 R502 100R + C502 47u + C503 47u C501 100n C504 100n GND GND 1 3 2 CN114 XLR GND REL106 MAIN-L MAIN-R GND D108 1N4148 +12V MUTE CN115 GND OUT-L OUT-R to speaker terminals +15V-R -15V-R +15V-R -15V-R GND -15V-L +15V-L +15V-L -15V-L headphone jack +15V-L +15V-R GND -15V-L -15V-R +12V +12V IN-R IN-L to volume board XLR <-> CINCH OUT-L OUT-R OUT-R OUT-L MUTE MUTE

19 Project 10 volume board M P801A solderconnection on volume board P801B P801C solderconnection on main board PRE-R PRE-L IN-R IN-L GND VOL1 VOL2

20 Project 10 amplifier left R200 2K21 R201 47K5 R203 2K21 R205 1K50 R207 2K21 R204 1K00 R206 182R R214 681R R211 100R R216 100R R202 22K1 R209 3K32 R217 10R0 R208 221R T201 K389 T204 C2240 T202 C2240 T203 C2240 T206 C2240 T208 C2240 T209 C2240 T224 C2240 T219 C2240 T214 C2240 T215 C2240 T220 C2240 T216 C2240 C201 330P LD201 LD202 LD203 GND T213 A970 T221 A970 T223 A970 T217 A970 T207 A970 T218 A970 T210 A970 T222 A970 T205 A970 C200 220P C222 47P C202 22P GND GND R213 100R R215 100R R210 10K0 R212 47K5 GND P201 200 R218 221 R219 47R5 R220 47R5 R221 1K00 R224 10K0 C207 1N GND R222 10R0 R231 1K00 R226 1K00 R239 47R5 R236 47R5 R225 10K R229 221R R241 1K00 R237 1K00 R233 47R5 R235 1K00 R242 47R5 R232 1K00 R234 1K00 R228 10K R238 1K00 R230 221R R240 1K00 R223 10R0 R227 1K00 C203 100N C204 100N + C205 1000U + C209 1000U + C206 47U + C210 47U + C212 47U + C208 47U + C213 47U + C211 47U Z201 16V LD204 Z202 16V LD205 C214 330P C215 330P R246 47R5 R247 1K82 R265 47K5 T225 A1145 T226 C2705 R249 332R LD208 LD206 D201 R250 332R R251 3K92 R255 47R5 R252 4K75 P202 10K + C220 10U 5 4 OPTO201A SFH601-3 R243 10R C216 33P C217 220P GND LD207 LD209 R248 95K3 R271 1R0 R267 1R0 R276 10R0 R272 10R0 R275 10K0 R274 10K0 R277 1R0 R263 47R5 R258 47R5 R266 10R0 R269 10K0 R268 10K0 R270 10R0 R260 221R R254 47R5 R264 221R R259 221R R256 6R81 R257 6R81 R261 6R81 R262 6R81 R253 47R5 T233 A1302 T232 A1302 T231 A1306 T229 C3298 T234 C3281 T235 C3281 T227 C3423 T228 A1360 C223 100P C224 100P R273 1R0 R278 15R D202 1N5407 D203 1N5407 C221 100N GND GND GND GND GND GND GND PRE-L GND -44V +44V from volume board to output relay +44V -44V GND +15V-L -15V-L 4W +15V-L -15V-L IN-L OUT-L IN-L +44V +15V-L GND -15V-L -44V OUT-L P201 P202 OFFSET BIAS POT.METER FUNCTION OUT-L T230 BC517 BD901 T212 BD902

21 Project 10 amplifier right R400 2K21 R401 47K5 R403 2K21 R405 1K50 R407 2K21 R404 1K00 R406 182R R414 681R R411 100R R416 100R R402 22K1 R409 3K32 R417 10R0 R408 221R T401 K389 T404 C2240 T402 C2240 T403 C2240 T406 C2240 T408 C2240 T409 C2240 T424 C2240 T419 C2240 T414 C2240 T415 C2240 T420 C2240 T416 C2240 C401 330P LD401 LD402 LD403 GND T413 A970 T421 A970 T423 A970 T417 A970 T407 A970 T418 A970 T410 A970 T422 A970 T405 A970 C400 220P C422 47P C402 22P GND GND R413 100R R415 100R R410 10K0 R412 47K5 GND P401 200 R418 221 R419 47R5 R420 47R5 R421 1K00 R424 10K0 C407 1N GND R422 10R0 R431 1K00 R426 1K00 R439 47R5 R436 47R5 R425 10K R429 221R R441 1K00 R437 1K00 R433 47R5 R435 1K00 R442 47R5 R432 1K00 R434 1K00 R428 10K R438 1K00 R430 221R R440 1K00 R423 10R0 R427 1K00 C403 100N C404 100N + C405 1000U + C409 1000U + C406 47U + C410 47U + C412 47U + C408 47U + C413 47U + C411 47U Z401 16V LD404 Z402 16V LD405 C414 330P C415 330P R446 47R5 R447 1K82 R465 47K5 T425 A1145 T426 C2705 R449 332R LD408 LD406 D401 R450 332R R451 3K92 R455 47R5 R452 4K75 P402 10K + C420 10U 5 4 OPTO401A SFH601-3 R443 10R C416 33P C417 220P GND LD407 LD409 R448 95K3 R471 1R0 R467 1R0 R476 10R0 R472 10R0 R475 10K0 R474 10K0 R477 1R0 R463 47R5 R458 47R5 R466 10R0 R469 10K0 R468 10K0 R470 10R0 R460 221R R454 47R5 R464 221R R459 221R R456 6R81 R457 6R81 R461 6R81 R462 6R81 R453 47R5 T433 A1302 T432 A1302 T431 A1306 T429 C3298 T434 C3281 T435 C3281 T427 C3423 T428 A1360 C423 100P C424 100P R473 1R0 R478 15R/4W D402 1N5407 D403 1N5407 C421 100N GND GND GND GND GND GND GND PRE-R GND OUT-R -44V +44V from volume board to output relay +44V -44V GND +15V -15V IN-R OUT-R +44V +15V-R GND -15V-R -44V IN-R +15V-R OUT-R -15VR- P401 P402 OFFSET BIAS POT.METER FUNCTION T430 BC517 T412 BD902 BD901

22 Project 10 control Xtal 10 EXtal 11 MD1 12 MD0 13 NMI 14 VCC 15 STBY 16 GND 17 P40 19 P41 20 P42 21 P43 22 P44 23 P45 24 P46 25 P47 26 nc 18 P50 27 P51 28 P52 29 P53 30 P54 31 P55 32 P70 33 P71 34 nc 35 P72 36 P73 37 P74 38 P75/WR 39 P76/RD 40 P77 41 VCC 42 P27 43 RES 9 P66 8 P65 7 P64 6 P63 5 P62 4 P61 3 P60 2 nc 1 P30 61 P31 62 P32 63 P33 64 P34 65 P35 66 P36 67 P37 68 P26 44 P25 45 P24 46 P23 47 P22 48 P21 49 P20 50 nc 51 GND 52 P17 53 P16 54 P15 55 P14 56 P13 57 P12 58 P11 59 P10 60 H8 U1 H8/325 C1 33p C2 33p C3 100n GND +5V +5V 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 CN1 LINE2 VOL1 LINE1 VOL2 TUNER +5V CD +5V TAPE-MON STANDBY GND GND GND +12V-SW T-SENSOR +12V LED +12V LED MUTE IN1 1 IN2 2 IN3 3 IN4 4 IN5 5 IN6 6 IN7 7 IN8 8 GND 9 OUT8 11 OUT7 12 OUT6 13 OUT5 14 OUT4 15 OUT3 16 OUT2 17 OUT1 18 K 10 U2 ULN2804 GND LD3 LD7 LD2 LD4 LD6 LD5 LD1 R2 475R R3 475R R4 1K50 R5 475R R6 1K50 +12V 2 1 S1 standby 2 1 S2 mute 2 1 S3 cd 2 1 S4 tuner 2 1 S5 line1 2 1 S6 line2 2 1 S7 tape-mon V+ 2 D 1 GND 3 IR IR1 SFH506-38 R7 10R0 R8 47K5 + C4 47u +5V T2 C2240 T3 C2240 T4 A970 T5 A970 GND +5V + U3 TL7757 X1 8MHz R1 10R0 R9 10R0 C6 100N GND R10 100K J1 JUMPER CLOSED OPEN SERVICE NORMAL JUMPER SETTINGS PJ10 + C5 100u GND +5V +5V GND +12V VOL2 VOL1 L2 VOL1 L1 VOL2 TU CD TM STB TS MU MU +5V GND +5V MU TM CD TU L1 L2 to main board J1 JUMPER 25V standby 12V-SW GND STB

23 PCB drawings of Project 10 Because there is a significant image-quality loss during the conversion of the drawings, the PCB-drawing is located in a separate file. This file is in PDF-format (Adobé Acrobat 3.0 Reader). • Pj10main.PDF for Mainboard • Pj10disl.PDF for Display

24 Parts list Designator Part Type Description B101 BR102 Bridge rectifier B102 BR102 Bridge rectifier B103 WO2M Bridge rectifier C1 33pF Ceramic capacitor C101 1.5uF/16V Electrolytic capacitor C102 100nF MKT capacitor C103 330uF/50V Electrolytic capacitor C104 330uF/50V Electrolytic capacitor C105 47uF/25V Electrolytic capacitor C106 47uF/25V Electrolytic capacitor C107 1000uF Electrolytic capacitor C108 100nF MKT capacitor C109 6800uF/50V Electrolytic capacitor C110 6800uF/50V Electrolytic capacitor C111 6800uF/50V Electrolytic capacitor C112 6800uF/50V Electrolytic capacitor C113 6800uF/50V Electrolytic capacitor C114 6800uF/50V Electrolytic capacitor C115 6800uF/50V Electrolytic capacitor C116 6800uF/50V Electrolytic capacitor C2 33pF Ceramic capacitor C200 220pF Styroflex capacitor C201 330pF Styroflex capacitor C202 22pF Ceramic capacitor C203 100nF MKT capacitor C204 100nF MKT capacitor C205 1000uF Electrolytic capacitor C206 47uF/25V Electrolytic capacitor C207 1nF MKT capacitor C208 47uF/25V Electrolytic capacitor C209 1000uF Electrolytic capacitor C210 47uF/25V Electrolytic capacitor C211 47uF/25V Electrolytic capacitor C212 47uF/25V Electrolytic capacitor C213 47uF/25V Electrolytic capacitor C214 330pF Styroflex capacitor C215 330pF Styroflex capacitor C216 33pF Styroflex capacitor C217 220pF Styroflex capacitor C220 10uF Electrolytic capacitor C221 100nF MKT capacitor C222 47pF Styroflex capacitor C223 100pF Styroflex capacitor C224 100pF Styroflex capacitor C3 100nF MKT capacitor C301 100nF MKT capacitor

25 Designator Part Type Description C302 47uF/25V Electrolytic capacitor C303 47uF/25V Electrolytic capacitor C304 100nF MKT capacitor C4 47uF/16V Electrolytic capacitor C400 220pF Styroflex capacitor C401 330pF Styroflex capacitor C402 22pF Ceramic capacitor C403 100nF MKT capacitor C404 100nF MKT capacitor C405 1000uF Electrolytic capacitor C406 47uF Electrolytic capacitor C407 1nF MKT capacitor C408 47uF Electrolytic capacitor C409 1000uF Electrolytic capacitor C410 47uF Electrolytic capacitor C411 47uF Electrolytic capacitor C412 47uf Electrolytic capacitor C413 47uF Electrolytic capacitor C414 330pF Styroflex capacitor C415 330pF Styroflex capacitor C416 33pF Styroflex capacitor C417 220pF Styroflex capacitor C420 10uF Electrolytic capacitor C421 100nF MKT capacitor C422 47pF Styroflex capacitor C423 100pF Styroflex capacitor C424 100pF Styroflex capacitor C5 100uF/25V Electrolytic capacitor C501 100nF MKT capacitor C502 47uF Electrolytic capacitor C503 47uF Electrolytic capacitor C504 100nF MKT capacitor C6 100nF MKT capacitor CN1 18PIN 18 pin connector CN102 18PIN 18 pin connector CN103 FASTON Flat-cable connector CN104 FASTON Flat-cable connector CN105 FASTON Flat-cable connector CN106 FASTON Flat-cable connector CN107 FASTON Flat-cable connector CN108 FASTON Flat-cable connector CN110 CINCH2P Cinch connector CN111 CINCH2P Cinch connector CN112 CINCH2P Cinch connector CN113 NC3FPP XLR connector CN114 NC3FPP XLR connector D101 1N4148 Diode D102 1N4148 Diode

26 Designator Part Type Description D103 1N4148 Diode D104 1N4148 Diode D105 1N4148 Diode D106 1N4148 Diode D107 6V8 Zener diode D108 1N4148 Diode D202 1N5407 Diode D203 1N5407 Diode D402 1N5407 Diode D403 1N5407 Diode IC301 SSM2143 IC IC501 SSM2143 IC IR1 SFH 506-38 Infrared receiver J1 Jumper Jumper LD1 LED red LED red LD2 LED red LED red LD201 LED red LED red LD202 LED red LED red LD203 LED red LED red LD204 LED red LED red LD205 LED red LED red LD206 LED red LED red LD207 LED red LED red LD208 LED red LED red LD209 LED red LED red LD3 LED red LED red LD4 LED red LED red LD401 LED red LED red LD402 LED red LED red LD403 LED red LED red LD404 LED red LED red LD405 LED red LED red LD406 LED red LED red LD407 LED red LED red LD408 LED red LED red LD409 LED red LED red LD5 LED red LED red LD6 LED red LED red LD7 LED red LED red OPTO101 OPTOUT Optical output OPTO201 SFH601-3 Opto-coupler OPTO401 SFH601-3 Opto-coupler P201 200R Trim pot. P202 10K Trim pot.

27 Designator Part Type Description P401 200R Trim pot. P402 10K Trim pot. Q101 L7805CV Voltage stabiliser Q102 L7812CV Voltage stabiliser R1 10R0 Resistor MRS25 R10 100K Resistor MRS25 R101 10K0 Resistor MRS25 R102 10K0 Resistor MRS25 R103 10K0 Resistor MRS25 R104 22K1 Resistor MRS25 R105 10K0 Resistor MRS25 R106 10K0 Resistor MRS25 R107 100K Resistor MRS25 R108 100K Resistor MRS25 R109 47K5 Resistor MRS25 R110 33K2 Resistor MRS25 R111 1R00 Resistor MRS25 R112 1K00 Resistor MRS25 R2 475R Resistor MRS25 R200 2K21 Resistor MRS25 R201 47K5 Resistor MRS25 R202 22K1 Resistor MRS25 R203 2K21 Resistor MRS25 R204 1K00 Resistor MRS25 R205 1K50 Resistor MRS25 R206 182R Resistor MRS25 R207 2K21 Resistor MRS25 R208 221R Resistor MRS25 R209 3K32 Resistor MRS25 R210 10K0 Resistor MRS25 R211 100R Resistor MRS25 R212 47K5 Resistor MRS25 R213 100R Resistor MRS25 R214 681R Resistor MRS25 R215 100R Resistor MRS25 R216 100R Resistor MRS25 R217 10R0 Resistor MRS25 R218 221R Resistor MRS25 R219 47R5 Resistor MRS25 R220 47R5 Resistor MRS25 R221 1K00 Resistor MRS25 R222 10R0 Resistor MRS25 R223 10R0 Resistor MRS25 R224 10K0 Resistor MRS25 R225 10K Resistor MRS25 R226 1K00 Resistor MRS25 R227 1K00 Resistor MRS25 R228 10K Resistor MRS25 R229 221R Resistor MRS25

28 Designator Part Type Description R230 221R Resistor MRS25 R231 1K00 Resistor MRS25 R232 1K00 Resistor MRS25 R233 47R5 Resistor MRS25 R234 1K00 Resistor MRS25 R235 1K00 Resistor MRS25 R236 47R5 Resistor MRS25 R237 1K00 Resistor MRS25 R238 1K00 Resistor MRS25 R239 47R5 Resistor MRS25 R240 1K00 Resistor MRS25 R241 1K00 Resistor MRS25 R242 47R5 Resistor MRS25 R243 10R Resistor MRS25 R246 47R5 Resistor MRS25 R247 1K82 Resistor MRS25 R248 95K3 Resistor MRS25 R249 332R Resistor MRS25 R250 332R Resistor MRS25 R251 3K92 Resistor MRS25 R252 4K75 Resistor MRS25 R253 47R5 Resistor MRS25 R254 47R5 Resistor MRS25 R255 47R5 Resistor MRS25 R256 6R81 Resistor MRS25 R257 6R81 Resistor MRS25 R258 47R5 Resistor MRS25 R259 221R Resistor MRS25 R260 221R Resistor MRS25 R261 6R81 Resistor MRS25 R262 6R81 Resistor MRS25 R263 47R5 Resistor MRS25 R264 221R Resistor MRS25 R265 47K5 Resistor MRS25 R266 10R0 Resistor MRS25 R267 1R0 Resistor MRS25 R268 10K0 Resistor MRS25 R269 10K0 Resistor MRS25 R270 10R0 Resistor MRS25 R271 1R0 Resistor MRS25 R272 10R0 Resistor MRS25 R273 1R0 Resistor MRS25 R274 10K0 Resistor MRS25 R275 10K0 Resistor MRS25 R276 10R0 Resistor MRS25 R277 1R0 Resistor MRS25 R278 15R Resistor MRS25 R279 1K00 Resistor MRS25 R280 1K00 Resistor MRS25 R281 100R Resistor MRS25

29 Designator Part Type Description R3 475R Resistor MRS25 R301 4K75 Resistor MRS25 R302 100R Resistor MRS25 R303 1K50 Resistor MRS25 R304 1K50 Resistor MRS25 R4 1K50 Resistor MRS25 R400 2K21 Resistor MRS25 R401 47K5 Resistor MRS25 R402 22K1 Resistor MRS25 R403 2K21 Resistor MRS25 R404 1K00 Resistor MRS25 R405 1K50 Resistor MRS25 R406 182R Resistor MRS25 R407 2K21 Resistor MRS25 R408 221R Resistor MRS25 R409 3K32 Resistor MRS25 R410 10K0 Resistor MRS25 R411 100R Resistor MRS25 R412 47K5 Resistor MRS25 R413 100R Resistor MRS25 R414 681R Resistor MRS25 R415 100R Resistor MRS25 R416 100R Resistor MRS25 R417 10R0 Resistor MRS25 R418 221R Resistor MRS25 R419 47R5 Resistor MRS25 R420 47R5 Resistor MRS25 R421 1K00 Resistor MRS25 R422 10R0 Resistor MRS25 R423 10R0 Resistor MRS25 R424 10K0 Resistor MRS25 R425 10K Resistor MRS25 R426 1K00 Resistor MRS25 R427 1K00 Resistor MRS25 R428 10K Resistor MRS25 R429 221R Resistor MRS25 R430 221R Resistor MRS25 R431 1K00 Resistor MRS25 R432 1K00 Resistor MRS25 R433 47R5 Resistor MRS25 R434 1K00 Resistor MRS25 R435 1K00 Resistor MRS25 R436 47R5 Resistor MRS25 R437 1K00 Resistor MRS25 R438 1K00 Resistor MRS25 R439 47R5 Resistor MRS25 R440 1K00 Resistor MRS25 R441 1K00 Resistor MRS25 R442 47R5 Resistor MRS25 R443 10R Resistor MRS25

30 Designator Part Type Description R446 47R5 Resistor MRS25 R447 1K82 Resistor MRS25 R448 95K3 Resistor MRS25 R449 332R Resistor MRS25 R450 332R Resistor MRS25 R451 3K92 Resistor MRS25 R452 4K75 Resistor MRS25 R453 47R5 Resistor MRS25 R454 47R5 Resistor MRS25 R455 47R5 Resistor MRS25 R456 6R81 Resistor MRS25 R457 6R81 Resistor MRS25 R458 47R5 Resistor MRS25 R459 221R Resistor MRS25 R460 221R Resistor MRS25 R461 6R81 Resistor MRS25 R462 6R81 Resistor MRS25 R463 47R5 Resistor MRS25 R464 221R Resistor MRS25 R465 47K5 Resistor MRS25 R466 10R0 Resistor MRS25 R467 1R0 Resistor MRS25 R468 10K0 Resistor MRS25 R469 10K0 Resistor MRS25 R470 10R0 Resistor MRS25 R471 1R0 Resistor MRS25 R472 10R0 Resistor MRS25 R473 1R0 Resistor MRS25 R474 10K0 Resistor MRS25 R475 10K0 Resistor MRS25 R476 10R0 Resistor MRS25 R477 1R0 Resistor MRS25 R478 15R/4W Resistor MRS25 R479 1K00 Resistor MRS25 R480 1K00 Resistor MRS25 R481 100R Resistor MRS25 R5 475R Resistor MRS25 R501 4K75 Resistor MRS25 R502 100R Resistor MRS25 R503 1K50 Resistor MRS25 R504 1K50 Resistor MRS25 R6 1K50 Resistor MRS25 R7 10R0 Resistor MRS25 R8 47K5 Resistor MRS25 R9 10R0 Resistor MRS25 REL101 Relay Relay REL102 Relay Relay REL103 Relay Relay REL104 Relay Relay

31 Designator Part Type Description REL105 Relay Relay S1 Switch Switch S2 Switch Switch S3 Switch Switch S4 Switch Switch S5 Switch Switch S6 Switch Switch S7 Switch Switch T101 BC546 Transistor T102 BD880 Transistor T103 BC517 Transistor T104 BC546 Transistor T105 BC546 Transistor T106 BC546 Transistor T107 BC556 Transistor T2 T2SC2240 Transistor T201 K389 DUAL N-JFET T202 2SC2240 Transistor T203 2SC2240 Transistor T204 2SC2240 Transistor T205 2SA970 Transistor T206 2SC2240 Transistor T207 2SA970 Transistor T208 2SC2240 Transistor T209 2SC2240 Transistor T210 2SA970 Transistor T211 BD901 Transistor T212 BD902 Transistor T213 2SA970 Transistor T214 2SC2240 Transistor T215 2SC2240 Transistor T216 2SC2240 Transistor T217 2SA970 Transistor T218 2SA970 Transistor T219 2SC2240 Transistor T220 2SC2240 Transistor T221 2SA970 Transistor T222 2SA970 Transistor T223 2SA970 Transistor T224 2SC2240 Transistor T225 2SA1145 Transistor T226 2SC2705 Transistor T227 2SC3423 Transistor T228 2SA1360 Transistor T229 2SC3298 Transistor T230 BC517 Transistor T231 2SA1306 Transistor T232 2SA1302 Transistor

32 Designator Part Type Description T233 2SA1302 Transistor T234 2SC3281 Transistor T235 2SC3281 Transistor T3 T2SC2240 Transistor T4 T2SA970 Transistor T401 K389 DUAL N-JFET T402 2SC2240 Transistor T403 2SC2240 Transistor T404 2SC2240 Transistor T405 2SA970 Transistor T406 2SC2240 Transistor T407 2SA970 Transistor T408 2SC2240 Transistor T409 2SC2240 Transistor T410 2SA970 Transistor T411 BD901 Transistor T412 BD902 Transistor T413 2SA970 Transistor T414 2SC2240 Transistor T415 2SC2240 Transistor T416 2SC2240 Transistor T417 2SA970 Transistor T418 2SA970 Transistor T419 2SC2240 Transistor T420 2SC2240 Transistor T421 2SA970 Transistor T422 2SA970 Transistor T423 2SA970 Transistor T424 2SC2240 Transistor T425 2SA1145 Transistor T426 2SC2705 Transistor T427 2SC3423 Transistor T428 2SA1360 Transistor T429 2SC3298 Transistor T430 BC517 Transistor T431 2SA1306 Transistor T432 2SA1302 Transistor T433 2SA1302 Transistor T434 2SC3281 Transistor T435 2SC3281 Transistor T5 T2SA970 Transistor U1 H8/325 IC U2 ULN2804 IC U3 TL7757 IC X1 8MHz X-TAL Z1 T3.15A Fuse Z2 T3.15A Fuse

33 Designator Part Type Description Z201 16V Zener diode Z202 16V Zener diode Z401 16V Zener diode Z402 16V Zener diode