Electrical Adjustment; Power Supply Adjustment; Power Supply Check (Hs10S1U/Hs10S1F Boards) - Sony RMT-144A Servise Manual

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In making adjustment, refer to 7-3. Adjustment Related
Parts Arrangement.
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 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 voltmeter
5) Standard commander (RMT-D143A/D143E/D143P/D144A)
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)
HLX-505 (J-6090-089-A) (dual layer)
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ELECTRICAL ADJUSTMENT

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SECTION 7
2 9
8

7-1. POWER SUPPLY ADJUSTMENT

1. Power Supply Check
(HS10S1U/HS10S1F Boards)
Mode
Instrument
SW +3.3 V Check
Test point
Specification
EVER +3.3 V Check
Test point
Specification
SW +5 V Check
Test point
Specification
SW +11 V Check
Test point
Specification
EV –13 V Check
Test point
Specification
EVER +11 V Check
Test point
Specification
Q Q
3 6 7 1 3 1 5
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.
co
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7-1
DVP-NC615/NC655P
9 4 2 8
E-E
Digital voltmeter
CN201 pin 7
3.5 ± 0.2 Vdc
CN201 pin 0
3.5 ± 0.2 Vdc
CN201 pin qa
5.0 ± 0.3 Vdc
CN201 pin 5,6
11.0 ± 1.0 Vdc
CN201 pin 2
–13.0 ± 1.0 Vdc
CN201 pin qs
11.2 ± 1.0 Vdc
0 5 8 2 9 9 4 2 8
m
9 9
9 9