Electrical Adjustment; Power Supply Check - Sony DVP-PQ2 Service Manual

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 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-D148A)
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 CHECK

1. SWITCHING REGULATOR
Mode
Instrument
EVER +3.3 V Check
Test point
Specification
SW +3.3 V Check
Test point
Specification
+5 V Check
Test point
Specification
SW +11 V Check
Test point
Specification
+11 V (AUDIO) Check
Test point
Specification
Checking method:
1) Confirm that each voltage satisfies the specification.
! Caution
Never touch the heat sink that is the primary part. It is feared that
you may get an electric shock.
• Abbreviation
U2
CA2 : Canada model
MX2 : Mexico model
EC1 : Europe model
EC2 : Europe model
CEK : United Kingdom model
7-1
DPSN-20CP (US, CND, MX)
DPSN-20CP-2 (UK, E)
E-E
Digital voltmeter
J2 pin 9
3.5 ± 0.2 Vdc
J2 pin 6
3.3 ± 0.2 Vdc
J2 pin q;
5.0 ± 0.3 Vdc
J2 pin 4, 5
11.0 ± 1.0 Vdc
J2 pin qa
11.0 ± 1.0 Vdc
: United States model
DVP-PQ2