Read Sony DVP-M20P Service Manual online
7-1
SECTION 7
ELECTRICAL ADJUSTMENT
DVP-M20P
This section describes procedures and instructions necessary for
adjusting electrical circuits in this unit.
adjusting electrical circuits in this unit.
Instruments required:
1)
1)
Color monitor TV
2)
Oscilloscope 1 or 2 phenomena, band width over 100 MHz,
with delay mode
with delay mode
3)
Frequency counter (over 8 digits)
4)
Digital multimeter
5)
Standard commander (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)
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)
7-1.
POWER SUPPLY OUTPUT VOLTAGE
CHECK
CHECK
Mode
Except standby
Instrument
Digital multimeter
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
3.35 ± 0.2 Vdc
SW+5 V Check
Test point
CN201 pin 6
Specification
5.0 ± Vdc
SW +8 V Check
Test point
CN201 pin 1
Specification
8.0 ± 0.5 Vdc
EVER +11 V Check
Test point
CN201 pin 3
Specification
11.0 ± Vdc
EVER –10 V Check
Test point
CN201 pin q;
Specification
–10.0 ± Vdc
Checking method:
1)
1)
Confirm that each voltage satisfies the specification.
Caution!
Please do not touch any electrical parts at primary circuit to avoid
electrical shock.
Please do not touch any electrical parts at primary circuit to avoid
electrical shock.
+0.5
–1.0
–1.0
+1.0
–0.5
–0.5
+0.3
–0.2
–0.2
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