Sony D-EJ985 - Portable Cd Player Service Manual

1. Service Mode Setting Method To set the service mode, perform as follows. 1) Make sure that the power is not turned on. 2) Check for the following states: CD lid open detection switch (S804) ....... OFF Solder bridge at SL806 (OPEN)............... OPEN [AVLS] switch (S802) ...... ...

Sony D-EJ985 - Portable Cd Player 2 XWE O Data input enable signal output to the D-RAM 3 to 6 D1, D0, D3, D2 I/O Two-way data bus with the D-RAM 7 DCLK O Not used 8 DCKE O Not used 9 XCAS O Column address strobe signal output to the D-RAM 10 WFCK O WFCK signal output terminal Not used 11 ...

Sony D-EJ985 - Portable Cd Player LINEAR CONSTANT CURRENT, CONSTANT VOLTAGE CHARGING BATTERY CHARGE CIRCUIT CHARGING BATTERY VOLTAGE DETECTOR CIRCUIT PRE-DRIVER SWITCHING POWER CIRCUIT CHARGE ON SWITCH Q403 SWITCHING POWER CIRCUIT LINEAR REGULATOR INTERFACE VG POWER CIRCUIT CLK OR OSC 45 46 43 65 42 CHGSW RF1 INM1 RF41 RF41 RF4 RF4 V ...

Sony D-EJ985 - Portable Cd Player mVp-p 2.4 Vp-p 59.1 ns 2.5 Vp-p 236 ns 2 IC601 w; (CLOK) 2.0 Vp-p 950 ns 2.0 Vp-p 950 ns Note on Printed Wiring Board • X : parts extracted from the component side. • Y : parts extracted from the conductor side. • z : Through hole. • : Pattern from the side which enables seeing. (The other layers' patterns are ...

Not used 45 INW1 I Battery charge circuit error amplifier invert input for rechargeable battery 46 RF1 O Battery charge circuit error amplifier output for rechargeable battery 47 VOUT1 O VIN power supply circuit cont ...

Sony D-EJ985 - Portable Cd Player 0.1uF 25V C465 1-125-777-11 CERAMIC CHIP 0.1uF 10% 10V C466 1-104-847-11 TANTALUM CHIP 22uF 20% 4V C468 1-125-777-11 CERAMIC CHIP 0.1uF 10% 10V C469 1-164-937-11 CERAMIC CHIP 0.001uF 10% 50V C490 1-115-156-11 CERAMIC CHIP 1uF 10V C501 1-10 ...

Sony D-EJ985 - Portable Cd Player • IC403 TB2130AF (FOCUS/TRACKING COIL DRIVER, SLED MOTOR DRIVER, POWER CONTROL) Pin No. Pin Name I/O Description 1 VREF I Reference voltage input terminal 2 RF41 O Power supply 4 (APC) section operational amplifier 1 output 3 PAPC I Power supply 4 (APC) section operational amplifier 1 non-invert input 4 VIND ...

In case of operation check, confirm that focus bias. Precautions for Check 1. Perform check in the order given. 2. Use YEDS-18 disc (Part No.: 3-702-101-01) unless otherwise indicated. 3. Power supply voltage requirement: DC4.5 V in DC IN jack. (J401) VOLU ...

Sony D-EJ985 - Portable Cd Player • See page 13 for Waveforms. • See page 19 for IC Block Diagrams. The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. (Page 17) (Page 18) ...

Sony D-EJ985 - Portable Cd Player • See page 13 for Waveform. (Page 16) (Page 18) ...

Sony D-EJ985 - Portable Cd Player line with mark 0 are critical for safety. Replace only with part number specified. R605 1-218-990-11 SHORT CHIP 0 R606 1-218-969-11 RES-CHIP 22K 5% 1/10W R607 1-218-969-11 RES-CHIP 22K 5% 1/10W R608 1-218-969-11 RES-CHIP 22K 5% 1 ...