Service Adjustments - Sanyo CE14SA4 Service Manual

Service Adjustments

Following adjustments are not required to readjust when replacing the memory IC.
B-VOLTAGE SUPPLY CHECKING
(1) Connect DC meter to TP-B and the ground.
(2) Tune the receiver to an active channel and synchro-
nized picture. Select NATURAL picture mode by press-
ing the PICTURE MODE button on the remote control.
(3) Adjust B-voltage to be 130 ± 1V DC by using VR631.
MAIN BOARD
D606
KG
C606
F601
TP-EE
R603 C607-H1
R604-H1
R618
J604
R604-H2
L605
R612-H1
E
Q611 E
C613
Q612
E
R609
Q613
Q614
R620
R617
R612-H2
L604
R613-H1
D611
R613
1AA4B10S0160A
Q613-H3
R629
TP-B
B-Voltage Supply Adjustment
FOCUS ADJUSTMENT
(1) Receive the monochrome circular pattern.
(2) Set the brightness to normal and contrast to maximum.
(3) Adjust the focus control on the F.B.T. for the best focus
on the screen centre.
MAIN BOARD
D432
KDY-4
KDY-3
R477
KDY-1
T471-H2 T471-H1
T471
FBT
Focus VR
(Upper side)
D683
R663
D685
J687
C607
R662
R665
R635
R637
JP661 E
D686
C607-H2 JP633
R639
R638
D662
J688
C628
R643
T611-H2
T611-H16
T611-H14
R686
R642
J645
T611-H4
T611
CONVERTER
TRANS.
J633
T611-H7
T611-H10
JW4
KDY-6
TP-B
C482
KDY-5
L441-H2
D432
KDY-4
KDY-3
R477
L441A
KDY-1
T471-H2 T471-H1
L441-H2
X171
T431
D441
H-DRIVE
TRANS.
L441-H1
L441A
R501
R441
R435
R103
R435A-H1
J033
R435A-H2
Q432
H-OUT
R479
JP1005
D476
C486
K1002
R488 R423
R422
VID AUD
D421
C407
JP1004
R475
IN
Q432-H5
1 KQ 3
HIGH VOLTAGE CHECK
Note: +B (+130V) Voltage Check and Grayscale Adjustment
must be completed before attempting High Voltage Check.
(1) Connect high voltage voltmeter negative lead to
ground, and connect + lead to anode of picture tube.
(2) Tune receiver to an active channel and confirm TV is
operating properly.
(3) Maximize the beam current by adjusting the contrast
J666 D663
and brightness controls to maximum. Confirm high
J808
J502
voltage is within 20.0 KV and 22.0 KV at maximum
J513
J2 beam current.
J0
R510
(4) Eliminate the beam current by adjusting the contrast
R511
C
and brightness controls to minimum. Confirm high
JW3
J401
voltage does not exceed 23.5 KV at zero beam current.
IC501-
C517
R872
J504
C
If reading is not within range, check horizontal circuit.
D512
No high-voltage adjustment is provided on this chassis.
J
R519
C520
R518
R515
R514
IC501-H
R516 J505
C514
D441
L441-H1
R441
R435
R435A-H1
J104
J106
J103 J
C107
C1003
C101
VID AUD
J114
OUT
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