Denon AVR-688 Manuals (PDF)

Service manual (326 pages)

Brand: Denon
Model: AVR-688
Format: PDF
Key Aspects: System Connectivity and Wiring Basics, Device Specifications Overview, Troubleshooting Information
Updated: 13.04.2026
Source File: 1246114.pdf
Pages: 326
Description: Denon AVR-1508 Service manual — inside: main features, installation guide, plus servicing and upkeep. 2 AVR-1708/1508/688/588/488 AVC-1508 Please heed the points listed below during servicing and inspection. ◎Heed the…

Contents

Denon Brand Company, D&M Holdings lnc.

1
AVR-1508 / AVC-1508 model

4
CAUTION IN SERVICING

8
Required measurement equipment: DC Voltmeter

9
1.1. Power not turn on

10
2. Analog video

11
※ Unless specified, VIDEO UNIT part.

12
2.2. VCR MONITOR OUT(CVBS) Output NG

14
2.3. MONITOR OUT (S) Output NG

16
2.4. VCR MONITOR OUT(S) Output NG

19
2.5. COMPONENT OUT 1,2 Output NG

21
2.6. HDMI OUT 1,2 Output NG

25
3.1. No picture or sound is output

26
Check the TV

27
AUDIO BLOCK DIAGRAM

28
AVR-1708/688 VIDEO BLOCK DIAGRAM

29
AVR-1508/588/488,AVC-1508 VIDEO BLOCK DIAGRAM

30
SP RELAY GND

31
S4 TOTAL : 658mA

32
LEVEL DIAGRAMS (1/2)

33
LEVEL DIAGRAMS (2/2)

34
DSP(IC801 : ADSP-21367) Control Pin

36
HDMI_IN2 HPD Control Pin

37
R2A15215FP Terminal Function

39
ADSP21367 Terminal Function

40
LC89057W Terminal Function

41
BA7626 (IC1001,1005,1006 : for AVR1707/687 model)

45
ADV7180BSTZ (IC1018 : for AVR1708/688 model)

47
ADV7172KSTZ (IC1019 : for AVR1708/688 model)

49
PIN FUNCTION DESCRIPTION

50
2. FL DISPLAY

52
PRINTED WIRING BOARDS

53
FRONT P.W.B. UNIT (1/2)

55
FRONT P.W.B. UNIT (2/2)

56
INPUT P.W.B. UNIT

57
POWER P.W.B. UNIT (1/2)

58
POWER P.W.B. UNIT (2/2)

59
POWER P.W.B. UNIT (for AVR-488 E3 model)

61
CPU P.W.B. UNIT

62
HDMI P.W.B. UNIT

63
VIDEO P.W.B. UNIT (for AVR-1708/688 model)

64
VIDEO P.W.B. UNIT (for AVR-1508/588/488 model)

65
D-VIDEO P.W.B. UNIT (1/2) (for AVC-1508 model)

66
D-VIDEO P.W.B. UNIT (2/2) (for AVC-1508 model)

67
NOTE FOR PARTS LIST

68
AVR-1708 E3 model

69
AVR-1708 E2 model

96
AVR-688 E3 model

124
AVR-1508 E3 model

152
AVR-1508 E2 model

176
AVR-1508 EUT model

200
AVR-588 E3 model

223
AVR-488 E3 model

248
AVC-1508 JP model

271
EXPLODED VIEW (for AVC-1508 Japan model)

296
PARTS LIST OF EXPLODED VIEW

297
CPU P.W.B. ASSY

298
00D 963 0358 509

299
00D 963 0364 308

300
00D 963 0292 409

301
PARTS LIST OF PACKING & ACCESSORIES

303
00D 963 0110 303

304
NOTE FOR SCHEMATIC DIAGRAM

306
SCHEMATIC DIAGRAMS (1/20)

307
SCHEMATIC DIAGRAMS (2/20)

308
SCHEMATIC DIAGRAMS (3/20)

309
SCHEMATIC DIAGRAMS (4/20)

310
SCHEMATIC DIAGRAMS (5/20)

311
SCHEMATIC DIAGRAMS (6/20)

312
SCHEMATIC DIAGRAMS (7/20)

313
SCHEMATIC DIAGRAMS (8/20)

314
SCHEMATIC DIAGRAMS (9/20)

315
SCHEMATIC DIAGRAMS (10/20)

316
SCHEMATIC DIAGRAMS (11/20)

317
SCHEMATIC DIAGRAMS (12/20)

318
SCHEMATIC DIAGRAMS (13/20)

319
SCHEMATIC DIAGRAMS (14/20)

320
SCHEMATIC DIAGRAMS (15/20)

321
SCHEMATIC DIAGRAMS (16/20)

322
SCHEMATIC DIAGRAMS (17/20)

323
SCHEMATIC DIAGRAMS (18/20)

324
SCHEMATIC DIAGRAMS (19/20)

325
SCHEMATIC DIAGRAMS (20/20)

326

Pages Preview:

Service manual (368 pages)

Brand: Denon
Model: AVR-688
Format: PDF
Key Aspects: Hardware Verification Checklists, Control Panel and Interface Navigation, Best Practices for Everyday Use
Updated: 03.07.2026
Source File: 1246115.pdf
Pages: 368
Description: Reference the Denon 1708 - AVR AV Receiver Service manual whenever you need connection and wiring, control and indicator descriptions and cleaning instructions. Denon Brand Company, D&M Holdings lnc. ●For purposes of improvement, specifications and design are subject to change…

Contents

Denon Brand Company, D&M Holdings lnc.

1
AVR-1508 / AVC-1508 model

5
CAUTION IN SERVICING

9
( Bottom view )

11
1. PANEL FRONT ASSY

12
2.CHASSIS BACK ASSY

13
Check mode for µcom/DSP version s

16
マイコン・DSP バージョンのチェック方法 s

17
Required measurement equipment: DC Voltmeter

18
1.1. Power not turn on

19
2. Analog video

20
※ Unless specified, VIDEO UNIT part.

21
2.2. VCR MONITOR OUT(CVBS) Output NG

23
2.3. MONITOR OUT (S) Output NG

25
2.4. VCR MONITOR OUT(S) Output NG

28
2.5. COMPONENT OUT 1,2 Output NG

30
2.6. HDMI OUT 1,2 Output NG

34
3.1. No picture or sound is output

35
Check the TV

36
AUDIO BLOCK DIAGRAM

37
AVR-1708/688 VIDEO BLOCK DIAGRAM

38
AVR-1508/588/488,AVC-1508 VIDEO BLOCK DIAGRAM

39
SP RELAY GND

40
S4 TOTAL : 658mA

41
LEVEL DIAGRAMS (1/2)

43
LEVEL DIAGRAMS (2/2)

44
DSP(IC801 : ADSP-21367) Control Pin

46
HDMI_IN2 HPD Control Pin

47
R2A15215FP Terminal Function

49
ADSP21367 Terminal Function

50
LC89057W Terminal Function

51
BA7626 (IC1001,1005,1006 : for AVR1707/687 model)

55
ADV7180BSTZ (IC1018 : for AVR1708/688 model)

57
ADV7172KSTZ (IC1019 : for AVR1708/688 model)

59
PIN FUNCTION DESCRIPTION

60
2. FL DISPLAY

62
PRINTED WIRING BOARDS

63
MAIN P.W.B. UNIT (2/2)

64
FRONT P.W.B. UNIT (1/2)

65
FRONT P.W.B. UNIT (2/2)

66
INPUT P.W.B. UNIT

67
POWER P.W.B. UNIT (1/2)

68
POWER P.W.B. UNIT (2/2)

69
POWER P.W.B. UNIT (for AVR-488 E3 model)

71
CPU P.W.B. UNIT

72
HDMI P.W.B. UNIT

73
VIDEO P.W.B. UNIT (1/2) (for AVR-1708/688 model)

74
VIDEO P.W.B. UNIT (2/2) (for AVR-1708/688 model)

75
D-VIDEO P.W.B. UNIT (1/2) (for AVC-1508 model)

78
D-VIDEO P.W.B. UNIT (2/2) (for AVC-1508 model)

79
HDMI POWER P.W.B. UNIT

80
NOTE FOR PARTS LIST

81
AVR-1708 E3 model

82
AVR-1708 E2 model

112
AVR-688 E3 model

141
AVR-1508 E3 model

171
AVR-1508 E2 model

198
AVR-1508 EUT model

226
AVR-588 E3 model

252
AVR-488 E3 model

279
AVC-1508 JP model

304
EXPLODED VIEW (for AVC-1508 Japan model)

333
AVR1508SPEUT Measure parts of EMC

334
CPU P.W.B. ASSY

336
D-VIDEO P.W.B. ASSY

337
SCREW(3X8 BK WASHER NI12)

340
SCHEMATIC DIAGRAMS (1/20)

349
SCHEMATIC DIAGRAMS (2/20)

350
SCHEMATIC DIAGRAMS (3/20)

351
SCHEMATIC DIAGRAMS (4/20)

352
SCHEMATIC DIAGRAMS (5/20)

353
SCHEMATIC DIAGRAMS (6/20)

354
SCHEMATIC DIAGRAMS (7/20)

355
SCHEMATIC DIAGRAMS (8/20)

356
SCHEMATIC DIAGRAMS (9/20)

357
SCHEMATIC DIAGRAMS (10/20)

358
SCHEMATIC DIAGRAMS (11/20)

359
SCHEMATIC DIAGRAMS (12/20)

360
SCHEMATIC DIAGRAMS (13/20)

361
SCHEMATIC DIAGRAMS (14/20)

362
SCHEMATIC DIAGRAMS (15/20)

363
SCHEMATIC DIAGRAMS (16/20)

364
SCHEMATIC DIAGRAMS (17/20)

365
SCHEMATIC DIAGRAMS (18/20)

366
SCHEMATIC DIAGRAMS (19/20)

367
SCHEMATIC DIAGRAMS (20/20)

368

Pages Preview:

Service manual (326 pages)

Brand: Denon
Model: AVR-688
Format: PDF
Key Aspects: Initial Startup Checklist, Information on Regular Maintenance, System Connectivity and Wiring Basics
Updated: 26.08.2026
Source File: 1246113.pdf
Pages: 326
Description: Quick access to the Denon 1708 - AVR AV Receiver Service manual: main features, daily use recommendations and common questions and answers. TOKYO, JAPAN Denon Brand Company, D&M Holdings lnc. ●For purposes of improvement, specifications and design are subject…

Contents

Denon Brand Company, D&M Holdings lnc.

1
www. xiaoyu163. com

3
AVR-1508 / AVC-1508 model

4
CAUTION IN SERVICING

8
Required measurement equipment: DC Voltmeter

9
1.1. Power not turn on

10
2. Analog video

11
※ Unless specified, VIDEO UNIT part.

12
2.2. VCR MONITOR OUT(CVBS) Output NG

14
2.3. MONITOR OUT (S) Output NG

16
2.4. VCR MONITOR OUT(S) Output NG

19
2.5. COMPONENT OUT 1,2 Output NG

21
2.6. HDMI OUT 1,2 Output NG

25
3.1. No picture or sound is output

26
Check the TV

27
AUDIO BLOCK DIAGRAM

28
AVR-1708/688 VIDEO BLOCK DIAGRAM

29
AVR-1508/588/488,AVC-1508 VIDEO BLOCK DIAGRAM

30
SP RELAY GND

31
S4 TOTAL : 658mA

32
LEVEL DIAGRAMS (1/2)

33
LEVEL DIAGRAMS (2/2)

34
DSP(IC801 : ADSP-21367) Control Pin

36
HDMI_IN2 HPD Control Pin

37
R2A15215FP Terminal Function

39
ADSP21367 Terminal Function

40
LC89057W Terminal Function

41
BA7626 (IC1001,1005,1006 : for AVR1707/687 model)

45
ADV7180BSTZ (IC1018 : for AVR1708/688 model)

47
ADV7172KSTZ (IC1019 : for AVR1708/688 model)

49
PIN FUNCTION DESCRIPTION

50
2. FL DISPLAY

52
PRINTED WIRING BOARDS

53
FRONT P.W.B. UNIT (1/2)

55
FRONT P.W.B. UNIT (2/2)

56
INPUT P.W.B. UNIT

57
POWER P.W.B. UNIT (1/2)

58
POWER P.W.B. UNIT (2/2)

59
POWER P.W.B. UNIT (for AVR-488 E3 model)

61
CPU P.W.B. UNIT

62
HDMI P.W.B. UNIT

63
VIDEO P.W.B. UNIT (for AVR-1708/688 model)

64
VIDEO P.W.B. UNIT (for AVR-1508/588/488 model)

65
D-VIDEO P.W.B. UNIT (1/2) (for AVC-1508 model)

66
D-VIDEO P.W.B. UNIT (2/2) (for AVC-1508 model)

67
NOTE FOR PARTS LIST

68
AVR-1708 E3 model

69
AVR-1708 E2 model

96
AVR-688 E3 model

124
AVR-1508 E3 model

152
AVR-1508 E2 model

176
AVR-1508 EUT model

200
AVR-588 E3 model

223
AVR-488 E3 model

248
AVC-1508 JP model

271
EXPLODED VIEW (for AVC-1508 Japan model)

296
PARTS LIST OF EXPLODED VIEW

297
CPU P.W.B. ASSY

298
00D 963 0358 509

299
00D 963 0364 308

300
00D 963 0292 409

301
PARTS LIST OF PACKING & ACCESSORIES

303
00D 963 0110 303

304
w w w

305
NOTE FOR SCHEMATIC DIAGRAM

306
SCHEMATIC DIAGRAMS (1/20)

307
SCHEMATIC DIAGRAMS (2/20)

308
SCHEMATIC DIAGRAMS (3/20)

309
SCHEMATIC DIAGRAMS (4/20)

310
SCHEMATIC DIAGRAMS (5/20)

311
SCHEMATIC DIAGRAMS (6/20)

312
SCHEMATIC DIAGRAMS (7/20)

313
SCHEMATIC DIAGRAMS (8/20)

314
SCHEMATIC DIAGRAMS (9/20)

315
SCHEMATIC DIAGRAMS (10/20)

316
SCHEMATIC DIAGRAMS (11/20)

317
SCHEMATIC DIAGRAMS (12/20)

318
SCHEMATIC DIAGRAMS (13/20)

319
SCHEMATIC DIAGRAMS (14/20)

320
SCHEMATIC DIAGRAMS (15/20)

321
SCHEMATIC DIAGRAMS (16/20)

322
SCHEMATIC DIAGRAMS (17/20)

323
SCHEMATIC DIAGRAMS (18/20)

324
SCHEMATIC DIAGRAMS (19/20)

325
SCHEMATIC DIAGRAMS (20/20)

326

Pages Preview:

Owner's manual (128 pages)

Brand: Denon
Model: AVR-688
Format: PDF
Key Aspects: Component Longevity Optimization, Cleaning and Sanitization Methods, Best Practices for Everyday Use
Updated: 21.07.2026
Source File: 650754.pdf
Pages: 128
Description: Owner's manual: Denon AVR-688 — rated values and dimensions, programming options, plus component replacement. AV SURROUND RECEIVER AVR-688 Owner’s Manual Manuel de l’Utilisateur…