Electrical Adjustment - Sony STR-DA3ES Service Manual

[IDLING CURRENT ADJUSTMENT]
Measuring Instrument:
Adjustment Procedure:
Channel
Test point Adjustment element
FRONT L TP501
FRONT R TP551
CENTER TP601
SURROUND TP701
SURROUND TP751
SURR BACK
TP651
Adjustment Location:
[POWER AMP BOARD]
TP501
RV501
RV701
TP651
TP701
[OSD ADJUSTMENT]
Measuring Instrument:
Procedure:
1. Connect the frequency counter to check connector (TP201) of
the S VIDEO board.
2. Connect between Pin 3 to Pin 4 of TP201 by lead wire.
3. Adjust the respective adjustment element so that the frequency
counter read specification.
MODEL
Adj.
VA555ES
I
DA3ES, DA5ES
All models
II
4. After check, remove the lead wire connected in step 2.
Adjustment Location:
[S-VIDEO BOARD]
CT204
1
4
TP201
SECTION 4

ELECTRICAL ADJUSTMENT

Digital voltmeter
Adjust the respective adjustment elements so that the voltage (absolute value) across the corresponding
testpoints satisfies the specification.
Specification
RV501
RV551
RV601
4.0mV±0.5mV
RV701
RV751
RV651
TP551
TP601
RV551
RV601
VR751
VR651
frequency counter
Adjustment
element
CT202
NTSC
(CLOCK BOARD)
CT201
PAL
(CLOCK BOARD
CT203
(S-VIDEO BOARD)
CT204
(S-VIDEO BOARD)
CT203
STR-DA3ES/DA5ES/VA555ES
TP751
S- VIDEO
BOARD
TP201
1
4
measurement
point
3.579545MHz ±50Hz
4.433618MHz ±50Hz
TP201
Pin 1
3.57954MHz ±50Hz
TP201
7.20MHz ±0.01MHz
Pin 2
[CLOCK BOARD]
CT202
CT201
frequency counter
+
–
Shorting
Specification
11