Electrical Adjustment; Power Supply Check; Boards - Sony DVP-F21 Service Manual

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In making adjustment, refer to 7-4. Adjustment
Related Parts Arrangement.
Note: During diagnostic check, the characters and color bars
can be seen only with the NTSC monitor. Therefore, for
diagnostic check, use the monitor that supports both
NTSC and PAL modes.
Use the reference disc for PAL for check, and use the
reference 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) Single or dual trace oscilloscope, band width over 100 MHz,
with delay mode
3) Frequency counter (over 8 digits)
4) Digital voltmeter
5) Standard commander (RMT-D126A/D126E/D126P)
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)
TE
L 13942296513
7) SACD reference disc
HLXA-509 (J-6090-090-A)
8) Extension Cable (J-6090-107-A)
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ELECTRICAL ADJUSTMENT

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SECTION 7
2 9
8

7-1. POWER SUPPLY CHECK

1. MB-99 Boards
Mode
Instrument
1 EVER +3.3 V Check
Test point
Specification
2 SW +3.3 V Check
Test point
Specification
3 +5 V Check
Test point
Specification
4 SW +11 V Check
Test point
Specification
5 EVER +5 V Check
Test point
Specification
Q Q
3 6 7 1 3 1 5
6 SW –11 V Check
Test point
Specification
7 +1.8 V Check
Test point
Specification
Checking method:
1) Confirm that each voltage satisfies the specification.
co
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7-1
9 4 2 8
E-E
Digital voltmeter
JL708
3.3 ± 0.1 Vdc
JL710
3.3 ± 0.2 Vdc
JL709
5.0 ± 0.3 Vdc
JL706, JL707
10.5 ± 0.5 Vdc
JL711
5.0 ± 0.2 Vdc
0 5 8 2 9 9 4 2 8
JL705
–11.0 ± 1.0 Vdc
JL713
1.8 ± 0.1 Vdc
m
DVP-F21
9 9
9 9