GV-D1000 - Sony VCR Service Manual (repair manual). Page 5

— 5 —

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.

HOW TO ENTER RECORD MODE WITHOUT
CASSETTE ····································································· 5-4

2-2.

HOW TO ENTER PLAYBACK MODE WITHOUT
CASSETTE ····································································· 5-4

2-3.

TAPE PATH ADJUSTMENT ·········································· 5-4

1.

Preparation for Adjustment ············································· 5-4

2.

Processing after Completing Operations ························· 5-4

5-3.

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

3-1.

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

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

INITIALIZATION OF B, C, D, E, F, 7, 8 PAGE DATA · 5-9

3-2-1. INITIALIZATION OF E, F, 7 PAGE DATA ··················· 5-9
1.

Initializing the E, F, 7 Page Data ····································· 5-9

2.

Modification of E, F, 7 Page Data ··································· 5-9

3.

F Page Table ···································································· 5-9

4.

E Page Table ···································································· 5-9

5.

7 Page Table ····································································· 5-9

3-2-2. INITIALIZATION OF C, D, 8 PAGE DATA ················ 5-10
1.

Initializing the C, D, 8 Page Data ·································· 5-10

2.

Modification of C, D, 8 Page Data ································ 5-10

3.

C Page Table ·································································· 5-10

4.

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

5.

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

3-2-3. INITIALIZATION OF B PAGE DATA ························· 5-14
1.

Initializing the B Page Data ··········································· 5-14

2.

Modification of B Page Data ········································· 5-14

3.

B Page Table ·································································· 5-14

3-3.

SYSTEM CONTROL SYSTEM ADJUSTMENT ········ 5-15

1.

Serial No. Input ····························································· 5-15

1-1.

Company ID Input ························································· 5-15

1-2.

Serial No. Input ····························································· 5-15

3-4.

SERVO AND RF SYSTEM ADJUSTMENT ··············· 5-17

1.

Cap FG Duty Adjustment (VC-275 board) ··················· 5-17

2.

PLL f

0

 & LPF f

0

 Adjustment (VC-275 board) ·············· 5-17

3.

Switching Position Adjustment (VC-275 board) ··········· 5-18

4.

AGC Center Level and APC & AEQ Adjustment ········· 5-18

4-1.

Preparations before adjustments ···································· 5-18

4-2.

AGC Center Level Adjustment (VC-275 board) ··········· 5-19

4-3.

APC & AEQ Adjustment (VC-275 board) ···················· 5-19

4-4.

Processing after Completing Adjustments ···················· 5-20

5.

PLL f

0

 & LPF f

0

 Fine Adjustment (VC-275 board) ······ 5-20

3-5.

VIDEO SYSTEM ADJUSTMENTS ····························· 5-21

1.

40.5MHz/54MHz Origin Oscillation Adjustment
(MS-95 board) ······························································· 5-21

2.

Chroma BPF f

0

 Adjustment (VC-275 board) ················ 5-21

3.

S VIDEO OUT Y Level Adjustment (VC-275 board) ··· 5-22

4.

S VIDEO OUT Chroma Level Adjustment
(VC-275 board) ····························································· 5-22

3-6.

AUDIO SYSTEM ADJUSTMENTS ···························· 5-24

1.

Playback Level Check ··················································· 5-24

2.

Overall Level Characteristics Check ····························· 5-24

3.

Overall Distortion Check ··············································· 5-24

4.

Overall Noise Level Check ············································ 5-25

5.

Overall Separation Check ·············································· 5-25

3-7.

LCD SYSTEM ADJUSTMENT ··································· 5-26

1.

LCD Initial Data Input (1) ············································· 5-26

2.

LCD Initial Data Input (2) ············································· 5-27

3.

VCO Adjustment (PD-130 board) ································· 5-27

4.

RGB AMP Adjustment (PD-130 board) ························ 5-28

5.

Contrast Adjustment (PD-130 board) ···························· 5-28

6.

COM AMP Adjustment (PD-130 board) ······················· 5-29

7.

V-COM Adjustment (PD-130 board) ···························· 5-29

8.

White Balance Adjustment (PD-130 board) ·················· 5-30

5-4.

SERVICE MODE ·························································· 5-31

4-1.

ADJUSTMENT REMOTE COMMANDER ················ 5-31

1.

Using the adjustment remote commander ····················· 5-31

2.

Precautions upon using the adjustment remote
commander ···································································· 5-31

4-2.

DATA PROCESS ··························································· 5-32

4-3.

SERVICE MODE ·························································· 5-33

1.

Setting the Test Mode ···················································· 5-33

2.

Emergence Memory Address ········································ 5-33

2-1.

EMG Code (Emergency Code) ····································· 5-33

2-2.

MSW Code ···································································· 5-34

3.

Bit value discrimination ················································ 5-35

4.

Switch check (1) ···························································· 5-35

5.

Switch check (2) ···························································· 5-35

6.

Switch check (3) ···························································· 5-35

7.

Switch check (4) ···························································· 5-36

8.

Switch check (5) ···························································· 5-36

9.

Record of Use check ······················································ 5-37

10.

Record of Self-diagnosis check ····································· 5-37

6-1.

EXPLODED VIEWS ······················································ 6-1

6-1-1. OVERALL SECTION ····················································· 6-1
6-1-2. CABINET (UPPER) SECTION-1 ·································· 6-2
6-1-3. CABINET (UPPER) SECTION-2 ·································· 6-3
6-1-4. LCD SECTION ······························································· 6-4
6-1-5. CASSETTE COMPARTMENT AND DRUM BLOCK

ASSEMBLY ···································································· 6-5

6-1-6. LS CHASSIS BLOCK ASSEMBLY ······························· 6-6
6-1-7. MECHANISM CHASSIS BLOCK ASSEMBLY ··········· 6-7
6-2.

ELECTRICAL PARTS LIST ·········································· 6-8