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Hcd-c770/c990, Electrical, Adjustments - dav parts

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6. VERSION INFORMATION On the Test Mode Menu screen, selecting [6] displays the ROM version and region code. The parenthesized hexadecimal number in version field is checksum value of ROM. ## Version Information ## IF con. Ver.x. xx SYScon. Ver.x. xx (xxxx) Model DAV-Cxxx Region 0x Front End Ver.x.xx Exit: RETURN IF con. : The version of system controller (IC901). SYScon. : The version of DVD system processor (IC206). Front End : The version of mechanism controller (IC301). 7. VIDEO LEVEL ADJUSTMENT On the Test Mode Menu screen, selecting [7] displays color bars for video level adjustment. During display of color bars, OSD disappears but the menu screen will be restored if pressing the [RETURN] key. SECTION 6 ELECTRICAL ADJUSTMENTS AUTO SERVO ADJUSTMENT After parts related to the servo circuit (RF amplifier (IC001), DSP (IC401), motor driver (IC501), EEPROM (IC302) so on) are replaced, re-adjusting the servo circuit is necessary. Select "ALL" at "1. DRIVE AUTO ADJUSTMENT" (Refer to page 25 in TEST MODE) and adjust DVD-SL (single layer), CD and DVD-DL (dual layer). RF LEVEL CHECK Connection: DVD board CN301 1 pin CN301 3 pin HCD-C770/C990 Ver 1.6 oscilloscope + - Procedure: 1. Connect an oscilloscope to test point 1 pin and 3 pin of CN301 on the DVD board. 2. Turn the power on. 3. Put the disc (LUV-P01) (Part No.: 4-999-032-01) (CD) in to playback. 4. Confirm that oscilloscope waveform is clear and check RF signal level is correct or not. 5. Put the disc (TDV-520CSO) (Part No.: J-2501-236-A) (DVD) in to playback. 6. Perform confirmation in the same manner as step 4. Note: A clear RF signal waveform means that the shape "◊" can be clearly distinguished at the center of the waveform. RF signal waveform VOLT/DIV: 200 mV TIME/DIV: 500 ns CD: 1.05 ± 0.2 Vp-p DVD: 1.09 ± 0.2 Vp-p Checking Location: - DVD Board (Component Side) - CN301 7 1 31 31

Section	Page
COVER	1
SELF DIAGNOSIS FUNCTION	2
TABLE OF CONTENTS	4
1. SERVICING NOTES	5
2. GENERAL	6
3. DISASSEMBLY	9
3-1. DISASSEMBLY FLOW	9
3-2. FRONT PANEL (AL) SECTION, SIDE PANEL (L)/(R)	10
3-3. MECHANISM DECK (CDM69-DVBU16)	10
3-4. POWER SW BOARD	11
3-5. AUDIO BOARD, VIDEO BOARD	11
3-6. AMP BOARD	12
3-7. POWER BOARD	12
3-8. DVD BOARD	13
3-9. OPTICAL PICK-UP (DVBU16)	13
3-10. PICK-UP UNIT (TDP022W)	14
3-11. SW BOARD, BRACKET (TOP) ASSY	14
3-12. RELAY BOARD	15
3-13. MOTOR (STOCKER) ASSY (STOCKER) (M781)	15
3-14. MOTOR (STOCKER) ASSY (ROLLER) (M771)	16
3-15. MOTOR (STOCKER) ASSY (MODE) (M761)	16
3-16. RUBBER ROLLER (SLIDER) ASSY	17
3-17. TIMING BELT (FRONT/REAR)	17
3-18. CAM (GEAR)	18
3-19. SENSOR BOARD	18
4. ASSEMBLY	19
4-1. HOW TO INSTALL THE CAM (EJECT LOCK)	19
4-2. HOW TO INSTALL THE CAM (GEAR)	19
4-3. HOW TO INSTALL THE GEAR (MODE 2)	20
4-4. HOW TO INSTALL THE GEAR (MODE CAM)	20
4-5. HOW TO INSTALL THE ROTARY ENCODER (S702), GEAR (STOCKER COMMUNICATION)	21
4-6. HOW TO INSTALL THE CAM (STOCKER U/D)	21
4-7. HOW TO INSTALL THE STOCKER ASSY	22
4-8. PHASE ADJUSTMENT BETWEEN PINIONS (SLIDER) AND SLIDER-1 TO 5 (L/R)	23
5. TEST MODE	24
6. ELECTRICAL ADJUSTMENT	31
7. DIAGRAMS	32
7-1. BLOCK DIAGRAM – RF SERVO Section –	32
7-2. BLOCK DIAGRAM – AUDIO (DSP) Section –	33
7-3. BLOCK DIAGRAM – AUDIO OUT, PANEL Section –	34
7-4. BLOCK DIAGRAM – VIDEO Section –	35
7-5. BLOCK DIAGRAM – CHANGER, POWER SUPPLY Section –	36
7-6. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS	37
7-7. PRINTED WIRING BOARDS – RF Section –	38
7-8. SCHEMATIC DIAGRAM – RF Section –	39
7-9. PRINTED WIRING BOARDS – CHANGER Section –	40
7-10. SCHEMATIC DIAGRAM – CHANGER Section –	41
7-11. PRINTED WIRING BOARD – DVD Board (Component Side) –	42
7-12. PRINTED WIRING BOARD – DVD Board (Conductor Side) –	43
7-13. SCHEMATIC DIAGRAM – DVD Board (1/10) –	44
7-14. SCHEMATIC DIAGRAM – DVD Board (2/10) –	45
7-15. SCHEMATIC DIAGRAM – DVD Board (3/10) –	46
7-16. SCHEMATIC DIAGRAM – DVD Board (4/10) –	47
7-17. SCHEMATIC DIAGRAM – DVD Board (5/10) –	48
7-18. SCHEMATIC DIAGRAM – DVD Board (6/10) –	49
7-19. SCHEMATIC DIAGRAM – DVD Board (7/10) –	50
7-20. SCHEMATIC DIAGRAM – DVD Board (8/10) –	51
7-21. SCHEMATIC DIAGRAM – DVD Board (9/10) –	52
7-22. SCHEMATIC DIAGRAM – DVD Board (10/10) –	53
7-23. PRINTED WIRING BOARD – AMP Section (1/2) –	54
7-24. PRINTED WIRING BOARDS – AMP Section (2/2) –	55
7-25. SCHEMATIC DIAGRAM – AMP Section (1/2) –	56
7-26. SCHEMATIC DIAGRAM – AMP Section (2/2) –	57
7-27. PRINTED WIRING BOARDS – AUDIO Section –	58
7-28. SCHEMATIC DIAGRAM – AUDIO Section –	59
7-29. PRINTED WIRING BOARD – VIDEO Section –	60
7-30. SCHEMATIC DIAGRAM – VIDEO Section –	61
7-31. PRINTED WIRING BOARDS – DC-DC CONVERTER Section –	62
7-32. SCHEMATIC DIAGRAM – DC-DC CONVERTER Section –	63
7-33. PRINTED WIRING BOARDS – CONTROL Section –	64
7-34. SCHEMATIC DIAGRAM – CONTROL Section –	65
7-35. PRINTED WIRING BOARD – FL Board –	66
7-36. SCHEMATIC DIAGRAM – FL Board –	67
7-37. PRINTED WIRING BOARD – POWER Section (1/2) –	68
7-38. PRINTED WIRING BOARDS – POWER Section (2/2) –	69
7-39. SCHEMATIC DIAGRAM – POWER Section –	70
7-40. IC PIN FUNCTION DESCRIPTION	88
8. EXPLODED VIEWS	107
8-1. GENERAL SECTION	107
8-2. FRONT PANEL SECTION-1	108
8-3. FRONT PANEL SECTION-2	109
8-4. CHASSIS SECTION-1	110
8-5. CHASSIS SECTION-2	111
8-6. CHASSIS SECTION-3	112
8-7. MECHANISM DECK SECTION-1 (CDM69-DVBU16)	113
8-8. MECHANISM DECK SECTION-2 (CDM69-DVBU16)	114
8-9. MECHANISM DECK SECTION-3 (CDM69-DVBU16)	115
8-10. MECHANISM DECK SECTION-4 (CDM69-DVBU16)	116
8-11. MECHANISM DECK SECTION-5 (CDM69-DVBU16)	117
8-12. MECHANISM DECK SECTION-6 (CDM69-DVBU16)	118
8-13. OPTICAL PICK-UP SECTION (DVBU16)	119
9. ELECTRICAL PARTS LIST	120
AMP	120
AUDIO	123
CONTROL	125
DDCON	125
DVD	125
FL	135
HP	135
KEY	135
MODE MOTOR	136
POWER	136
POWER LED	137
POWER S/W	138
RELAY	138
RF	138
ROLLER MOTOR	139
SEL	139
SENSOR	139
STOCKER MOTOR	139
SW (1)	139
SW (2)	139
SW (3)	139
SW (4)	139
VIDEO	140
VOL	140

Match case Limit results 1 per page

HCD-C770/C990

VERSION

INFORMATION

On the Test Mode Menu screen, selecting

[6]

displays the ROM

version and region code.

The parenthesized hexadecimal number in version field is

checksum value of ROM.

## Version Information ##

IF con.

Ver.x. xx

SYScon.

Ver.x. xx

(xxxx)

Model

DAV-Cxxx

Region

Front End Ver.x.xx

Exit: RETURN

IF con.

: The version of system controller (IC901).

SYScon.

: The version of DVD system processor (IC206).

Front End

: The version of mechanism controller (IC301).

VIDEO

LEVEL

ADJUSTMENT

On the Test Mode Menu screen, selecting

[7]

displays color bars

for video level adjustment. During display of color bars, OSD dis-

appears but the menu screen will be restored if pressing the

[RE-

TURN]

key.

AUTO

SERVO

ADJUSTMENT

After parts related to the servo circuit (RF amplifier (IC001), DSP

(IC401), motor driver (IC501), EEPROM (IC302) so on) are re-

placed, re-adjusting the servo circuit is necessary. Select “ALL” at

“1. DRIVE AUTO ADJUSTMENT” (Refer to page 25 in TEST

MODE) and adjust DVD-SL (single layer), CD and DVD-DL (dual

layer).

SECTION

ELECTRICAL

ADJUSTMENTS

Ver 1.6

LEVEL

CHECK

Connection:

Procedure:

Connect an oscilloscope to test point

pin and

pin of

CN301 on the DVD board.

Turn the power on.

Put the disc (LUV-P01) (Part No.: 4-999-032-01) (CD) in to

playback.

Confirm that oscilloscope waveform is clear and check RF sig-

nal level is correct or not.

Put the disc (TDV-520CSO) (Part No.: J-2501-236-A) (DVD)

in to playback.

Perform confirmation in the same manner as step 4.

Note:

A clear RF signal waveform means that the shape “

◊

” can be clearly

distinguished at the center of the waveform.

Checking Location:

DVD board

oscilloscope

–

CN301

RF signal waveform

VOLT/DIV: 200 mV

TIME/DIV: 500 ns

CD: 1.05

0.2 Vp-p

DVD: 1.09

0.2 Vp-p

CN301

– DVD Board (Component Side) –