Electrical Adjustment - Sony DVP-NS50P Service Manual

This section describes procedures and instructions necessary for
adjusting electrical circuits in this unit.
Instruments required:
1) Color monitor TV
2) Oscilloscope 1 or 2 phenomena, band width over 100 MHz,
with delay mode
3) Frequency counter (over 8 digits)
4) Digital multimeter
5) Standard commander (RMT-175A and RMT-175P)
6) DVD reference disc
HLX-501 (J-6090-071-A) (dual layer) (NTSC)
HLX-503 (J-6090-069-A) (single layer) (NTSC)
HLX-504 (J-6090-088-A) (single layer) (NTSC)
HLX-505 (J-6090-089-A) (dual layer) (NTSC)
7) SACD reference disc
HLXA-509 (J-6090-090-A)
SECTION 7

ELECTRICAL ADJUSTMENT

7-1. POWER SUPPLY OUTPUT VOLTAGE
Mode
Instrument
EVER +5 V Check
Test point
Specification
SW +3.3 V Check
Test point
Specification
SW+5 V Check
Test point
Specification
SW +8 V Check
Test point
Specification
EVER +11 V Check
Test point
Specification
EVER –10 V Check
Test point
Specification
Checking method:
1)
Caution!
Please do not touch any electrical parts at primary circuit to avoid
electrical shock.
7-1
DVP-NS50P/NS41P/NS52P
CHECK
Except standby
Digital multimeter
CN201 pin 4
5.0 ± 0.3 Vdc
CN201 pin 5
3.35 ± 0.2 Vdc
CN201 pin 6
+0.3
5.0 ±
–0.2
CN201 pin 1
8.0 ± 0.5 Vdc
CN201 pin 3
+1.0
11.0 ±
–0.5
CN201 pin q;
–10.0 ±
Confirm that each voltage satisfies the specification.
Vdc
Vdc
+0.5
Vdc
–1.0