Electrical Adjustment; Power Supply Check; Mpn4801/Mpn4901 Boards; Adjustment - Sony DVP-NC600 Service Manual

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 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-D130A/D130O/D130P)
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)
SECTION 7

ELECTRICAL ADJUSTMENT

7-1. POWER SUPPLY ADJUSTMENT

1. Power Supply Check

Mode
Instrument
SW +3.3 V Check
Test point
Specification
EVER +5 V Check
Test point
Specification
SW +5 V Check
Test point
Specification
SW +11 V Check
Test point
Specification
SW –11 V Check
Test point
Specification
Checking method:
1) Confirm that each voltage satisfies the specification.
2. +11 V Adjustment
Mode
Measuring Instrument
Measurement Point
Adjusting Element
Specified Value
3. +5 V Adjustment
Mode
Measuring Instrument
Measurement Point
Adjusting Element
Specified Value
4. –11 V Adjustment
Mode
Measuring Instrument
Measurement Point
Adjusting Element
Specified Value
7-1

(MPN4801/MPN4901 Boards)

E-E
Digital voltmeter
CN101 pin 8, 9
3.45 ± 0.2 Vdc
CN101 pin 7
5.1 ± 0.2 Vdc
CN101 pin 5, 6
5.1 ± 0.2 Vdc
CN101 pin 3, 4
11.0 ± 1.0 Vdc
CN101 pin qf, qg
–11.0 ± 1.0 Vdc
(MPN4801/MPN4901 Boards)
PB
Digital voltmeter
CN101 pin 3, 4
VR101
11.0 ± 1.0 V
(MPN4801/MPN4901 Boards)
PB
Digital voltmeter
CN101 pin 7
VR301
5.1 ± 0.2 V
(MPN4801/MPN4901 Boards)
PB
Digital voltmeter
CN101 pin qf, qg
VR401
–11.0 ± 1.0 V
DVP-NC600