Read Sony SCD-1 / SCD-777ES (serv.man4) Service Manual online
3
Board
Ref.No.
RF
IC001 (RF amp)
MAIN
IC504 (F/T driver), IC505 (Tilt driver),
IC512 (Servo DSP), IC702 (ARP), and
IC735 (EEPROM)
3.
ELECTRICAL ADJUSTMENT
<Page 12>
• Addition
Details of IC on RF or MAIN Board:
Adjustment Procedure
When part is not replaced:
1. S curve check
2. Traverse check
3. RF level check
4. CLV jitter check
5. Optical pick-up height adjustment
6. Overall adjustment
When Optical pick-up block is replaced:
1. Optical pick-up height adjustment
2. Overall adjustment
3. S curve check
4. Traverse check
5. RF level check
6. CLV jitter check
1. S curve check
2. Traverse check
3. RF level check
4. CLV jitter check
5. Optical pick-up height adjustment
6. Overall adjustment
When Optical pick-up block is replaced:
1. Optical pick-up height adjustment
2. Overall adjustment
3. S curve check
4. Traverse check
5. RF level check
6. CLV jitter check
Disc
A
B
SATD-S2
1.5 to 2.3 Vp-p
- 0.1 to + 0.1 V
TCD-784
<Page 13>
• Correction
(S Curve check)
!
: Indicates corrected portion.
INCORRECT
CORRECT
Specified Value:
^
Disc
A
B
SATD-S2
1.5 to 2.7 Vp-p
- 0.1 to + 0.1 V
TCD-784
1.5 to 2.3 Vp-p
Specified Value:
<Page 14>
• Correction
(Optical Pick-up Height Adjustment)
!
: Indicates corrected portion.
INCORRECT
CORRECT
Procedure:
11. Lock the OP height adjusting screw 1 when adjustment fin-
11. Lock the OP height adjusting screw 1 when adjustment fin-
ished.
12. Press the
x
button
13. Press the
!
button to turn the power off.
Procedure:
11. Lock the OP height adjusting screw 1 when adjustment fin-
11. Lock the OP height adjusting screw 1 when adjustment fin-
ished.
12. Lock the OP height adjusting screw 1 at screw lock.
13. Press the
x
button
14. Press the
!
button to turn the power off.
$
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