Sony DVP-NS777P, Руководство по обслуживанию

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7-1
7-1. POWER SUPPLY CHECK
1. POWER SUPPLY BLOCK (SRV1501WW)
(SWITCHING REGULATOR)
Mode E-E
Instrument Digital voltmeter
EVER +5 V Check
Test point CN201 pin
4
Specification 5.0
±
0.3 Vdc
SW +3.3 V Check
Test point CN201 pin
5
Specification 3.3
±
0.2 Vdc
SW +5 V Check
Test point CN201 pin
6
Specification 5.0
±
0.3 Vdc
SW +8 V Check
Test point CN201 pin
1
Specification 8.0
±
1.0 Vdc
EVER +11 V Check
Test point CN201 pin
3
Specification 11.2
±
1.0 Vdc
EVER –10 V Check
Test point CN201 pin
0
Specification –10.0
±
1.0 Vdc
Checking method:
1) Confirm that each voltage satisfies the specification.
Note
Because the heatsink installed on the power supply board is a
part of the primary side, never touch it to avoid electrical shock.
SECTION 7
ELECTRICAL ADJUSTMENT
DVP-NS777P
Note:
During diagnostic check, the characters and color bars can
be seen only with the NTSC monitor. Therefore, for diag-
nostic check, use the monitor that supports both NTSC and
PAL modes.
Use the reference disc for PAL for check, and use the refer-
ence disc for NTSC for adjustment.
This section describes procedures and instructions necessary for
adjusting electrical circuits in this set.
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 voltmeter
5) Standard commander (RMT-D166P)
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)
HLX-506 (J-6090-077-A) (single layer) (PAL)
HLX-507 (J-6090-078-A)(dual layer) (PAL)
7) SACD reference disc
HLXA-509 (J-6090-090-A)
8) Extention Cable (J-6090-107-A)