GV-D200 - Sony VCR Service Manual (repair manual). Page 4

— 4 —

• VC-250 (DC/DC CONVERTER)(15/16)

SCHEMATIC DIAGRAM ···························· 4-39

• VC-250 (CONNECTION)(16/16)

SCHEMATIC DIAGRAM ···························· 4-41

• FP-575 (LANC), IO-68 (AV IN/OUT)

PRINTED WIRING BOARDS ····················· 4-43

• IO-68 (AV IN/OUT)

SCHEMATIC DIAGRAM ···························· 4-45

• FU-145 (DC/DC CONVERTER)

PRINTED WIRING BOARD ······················· 4-47

• FU-145 (DC/DC CONVERTER)

SCHEMATIC DIAGRAM ···························· 4-49

• PD-130 (LCD DRIVER, BACK-LIGHT)

PRINTED WIRING BOARD ······················· 4-51

• LS-56 (LCD SWITCH)

PRINTED WIRING BOARD ······················· 4-54

• PD-130 (LCD DRIVER, BACK-LIGHT)(1/2)

SCHEMATIC DIAGRAM ···························· 4-55

• PD-130 (BACK-LIGHT)(2/2)

SCHEMATIC DIAGRAM ···························· 4-57

• IR-38 (IR TRANSMITTER),

CONTROL SWITCH BLOCK (FK-78)

PRINTED WIRING BOARDS ····················· 4-59

• CONTROL SWITCH BLOCK (FK-78)

SCHEMATIC DIAGRAM ···························· 4-61

• EX-36 (MULTI CONNECTOR)

PRINTED WIRING BOARD ······················· 4-63

• EX-36 (MULTI CONNECTOR)

SCHEMATIC DIAGRAM ···························· 4-65

• FP-571 (BATTERY), FP-249 (S/T REEL)

PRINTED WIRING BOARDS ····················· 4-67

4-3.

WAVEFORMS ······························································ 4-68

4-4.

MOUNTED PARTS LOCATION ································· 4-70

1.

Before starting adjustment ··············································· 5-1

1-1.

Adjusting items when replacing main parts and boards. · 5-2

5-1.

ADJUSTMENT PREPARATIONS ································· 5-3

1-1.

PREPARATIONS BEFORE ADJUSTMENT ················· 5-3

1-1-1. List of Service Tools ························································ 5-3
5-2.

MECHANISM SECTION ADJUSTMENT ···················· 5-4

2-1.

Hi8/STANDARD8 MODE ·············································· 5-4

2-1-1. OPERATING WITHOUT CASSETTE ·························· 5-4
2-1-2. TAPE PATH ADJUSTMENT ·········································· 5-4
1.

Preparations for Adjustment ············································ 5-4

2-2.

DIGITAL8 MODE ·························································· 5-5

2-2-1. HOW TO ENTER RECORD MODE WITHOUT

CASSETTE ····································································· 5-5

2-2-2. HOW TO ENTER PLAYBACK MODE WITHOUT

CASSETTE ····································································· 5-5

2-2-3. OVERALL TAPE PATH CHECK ··································· 5-5
1.

Recording of the tape path check signal ·························· 5-5

2.

Tape path check ······························································· 5-5

5-3.

ELECTRICAL ADJUSTMENT ······································ 5-6

3-1.

PREPARATIONS BEFORE ADJUSTMENTS ·············· 5-6

3-1-1. Equipment to Required ···················································· 5-6
3-1-2. Precautions on Adjusting ················································· 5-7
3-1-3. Adjusting Connectors ······················································ 5-7
3-1-4. Connecting the Equipment ·············································· 5-8
3-1-5. Alignment Tape ······························································· 5-9
3-1-6. Input/output Level and Impedance ································ 5-10
3-2.

INITIALIZATION OF C, D, E, F, 7, 8 PAGE DATA ··· 5-11

3-2-1. INITIALIZATION OF C, D, 8 PAGE DATA ················ 5-11
1.

Initializing the C, D, 8 Page Data ·································· 5-11

2.

Modification of C, D, 8 Page Data ································ 5-11

3.

C Page Table ·································································· 5-11

4.

D Page Table ·································································· 5-12

5.

8 Page Table ··································································· 5-13

3-2-2. INITIALIZATION OF E, F, 7 PAGE DATA ················· 5-14
1.

Initializing the E, F, 7 Page Data ··································· 5-14

2.

Modification of E, F, 7 Page Data ································· 5-14

3.

F Page Table ·································································· 5-14

4.

E Page Table ·································································· 5-15

5.

7 Page Table ··································································· 5-16

3-3.

SYSTEM CONTROL SYSTEM ADJUSTMENT ········ 5-17

1.

Serial No. Input ····························································· 5-17

1-1.

Company ID Input ························································· 5-17

1-2.

Serial No. Input ····························································· 5-17

2.

Battery End Adjustment ················································ 5-19

3-4.

SERVO AND RF SYSTEM ADJUSTMENT ··············· 5-20

1.

REEL FG Adjustment (VC-250 Board) ························ 5-20

2.

PLL fo & LPF fo Pre-Adjustment (VC-250 Board) ······ 5-20

3.

Switching Position Adjustment (VC-250 Board) ·········· 5-21

4.

AGC Center Level and APC & AEQ Adjustment ········· 5-21

4-1.

Preparations before adjustments ···································· 5-21

4-2.

AGC Center Level Adjustment (VC-250 Board) ·········· 5-21

4-3.

APC & AEQ Adjustment (VC-250 Board) ··················· 5-22

4-4.

Processing after Completing Adjustments ···················· 5-22

5.

PLL fo & LPF fo Final Adjustment (VC-250 Board) ··· 5-23

6.

Hi8/Standard8 Switching Position Adjustment
(VC-250 Board) ····························································· 5-23

7.

CAP FG Offset Adjustment (VC-250 board) ················ 5-24

3-5.

VIDEO SYSTEM ADJUSTMENTS ····························· 5-25

1.

27MHz Origin Oscillation Adjustment (VC-250 board) ·· 5-25

2.

Chroma BPF fo Adjustment (VC-250 Board) ··············· 5-25

3.

S VIDEO OUT Y Level Adjustment (VC-250 Board) ·· 5-26

4.

S VIDEO OUT Chroma Level Adjustment
(VC-250 Board) ····························································· 5-26

5.

VIDEO OUT Y, Chroma Level Check (VC-250 Board) ·· 5-27

6.

Hi8/Standard8 Y/C Output Level Setting (VC-250 Board) · 5-27

7.

Hi8/standard 8mm AFC fo Adjustment (VC-250 board) ·· 5-28

3-6.

IR TRANSMITTER ADJUSTMENTS ························· 5-29

1.

IR Video Carrier Frequency Adjustment (VC-250 board) ·· 5-29

2.

IR Video Deviation Adjustment (VC-250 board) ·········· 5-29

3.

IR Audio Deviation Adjustment (VC-250 board) ········· 5-30

3-7.

AUDIO SYSTEM ADJUSTMENTS ···························· 5-31

1.

Hi8/Standard8 AFM BPF fo Adjustment (VC-250 board) ·· 5-31

2.

Hi8/Standard8 AFM 1.5 MHz Deviation Adjustment
(VC-250 board) ····························································· 5-32

3.

Hi8/Standard8 AFM 1.7 MHz Deviation Adjustment
(VC-250 board) ····························································· 5-32

4.

Digital8 Playback Level Check ····································· 5-32

5.

Overall Level Characteristics Check ····························· 5-32

6.

Overall Distortion Check ··············································· 5-32

7.

Overall Noise Level Check ············································ 5-33

8.

Overall Separation Check ·············································· 5-33

3-8.

LCD SYSTEM ADJUSTMENT (GV-D800/D800E) ··· 5-34

1.

LCD Initial Data Input (1) ············································· 5-34

2.

LCD Initial Data Input (2) ············································· 5-35

3.

VCO Adjustment (PD-130 board) ································· 5-35

4.

RGB AMP Adjustment (PD-130 board) ························ 5-36

5.

Contrast Adjustment (PD-130 board) ···························· 5-36

6.

COM AMP Adjustment (PD-130 board) ······················· 5-37

7.

V-COM Adjustment (PD-130 board) ···························· 5-37

8.

White Balance Adjustment (PD-130 board) ·················· 5-38

5-4.

SERVICE MODE ·························································· 5-39

4-1.

ADJUSTMENT REMOTE COMMANDER ················ 5-39

1.

Using the Adjustment Remote Commander ·················· 5-39

2.

Precautions Upon Using the Adjustment Remote
Commander ··································································· 5-39

4-2.

DATA PROCESS ··························································· 5-40

4-3.

SERVICE MODE ·························································· 5-41

1.

Setting the Test Mode ···················································· 5-41

2.

Emergence Memory Address ········································ 5-41