Sanyo CE21KF8R, Руководство по обслуживанию

Страница: 15 / 30

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Service Adjustments
Following adjustments are not required to readjust when replacing the memory IC.
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 c 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
and brightness controls to maximum. Confirm high
voltage is within 23.0 KV and 25.0 KV at maximum
beam current.
(4) Eliminate the beam current by adjusting the contrast
and brightness controls to minimum. Confirm high
voltage does not exceed 26.5 KV at zero beam current.
If reading is not within range, check horizontal circuit.
No high-voltage adjustment is provided on this chassis.
HIGH VOLTAGE CHECK
34 21
E
E
E
E
E
16
9
7
1
E
E
E
E
E
E
E
10
5
8
E
C651
C609-H1
C609A-H2
C609A-H1
C609
T611
L613
C615
C618
C617
D611
D643
Q613A Q613-H1
Q613
Q613-H2
Q613-H3
C629
L612
L616
D610
R615
R626
D614
D615
C614
D612 L614
R620
R621
R625
R632
R633
C611
C613
C644
D616
D617
L615
Q611
Q625
Q641
Q642
R611 R613
R614
R616
R619
R622
R623
R624
R627
R631
R641
R642
R643
R644
D641
Q613-H4
Q613-H5
Q612
D619
!
!
J607
J606
J609
T611A
T611-H3
T611-H2
T611-H7
T611B
R628
R629
J604
T611B-H13
T611B-H14
T611B-H17
T611B-H12
T611-H14
T611-H13
T611-H17
J608
J605
T611-H12
Q651
R651
R672
D671
R671
J627
R681
Q681
C665
D659
R659
R658
R669
R668
D664
C681
IC681
R646
D653
L653
L654
C654
C643
C657
Q653
J623
Q652
C656
R657
R655
R652
C655
D651
L651
L652
C652
D652
J612
J611
R653
D692
R663 R664
C639
D662
R665
R661
R645
J625
J616
91
C690
D655
D693
R695
J622
R103
J626
D661
Q462
D439
J411
T431
C425A
C424A
R471
R4
C462
R480
R468
J402
C465
J403
R434
C423
L431
T431-H4
C433
C432
T431-H2
C434
R431
Q431
R433
C425 C424
C441-H2
C441-H
C442
C441
C442-H3
L432
R423
J404
C442-H2 C442-H1
C44
T431-H1
T431-H3
L461 Q432
Q432-H2
Q432-H3 Q432-H1
Q432A
L462-H3
L462-H1
L462
L462-H2
C423A
TP-B
R445
J630
IC802
D861
J821
J408
J621
J2
J409
C618A
J618
J619
Q613-H6
VR651
T611-H4
J63
JP5
JP631
JW35
J401
J615
Q654
C609 H2
R660
JW11
JW12
JW10
JWW1
T431A
JP431
JW7
C355
R656
J624
JP633
R613A
D654-H2
D654
D654-H1
JW13
JW14
JW15
R478
Q662
J603
JW33
JW8
J410
JP441A
J617
Q432B
L441 L441-H1
L441-H3
L441
C664
C653
J638
(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 VR651.
B-VOLTAGE SUPPLY CHECKING
(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.
FOCUS ADJUSTMENT
MAIN BOARD
B-Voltage Supply Adjustment
MAIN BOARD
TP-B
9
7
1
E
T471A
T471
T611
L613
C617
D611
C629
L612
D616
617
15
623
R624
Q613-H4
Q612
!
J609
T
T611-H7
T611B
R628 R629
H13 T611B-H12
D439
JP409
R488
T431
C515
C437
C425A
C424A
R487
C487
KQ
JP412
T471-H5
T471-H1
KDY-1
JP408
JP407
JP403A
JP405
R355
JW1
R
5
J406
R477A
C486
R492
C491
D485
R475
R485
D
R484
J403
R434
C423-H2
C423-H3
C423
C423-H1
C420-H1
C420
C420-H3
C420-H2
C437A
R422
R424
L431
T431-H4
C433
C432
T431-H2
C434
R431
Q431
R433
C425
C424
D438
C441-H2
C441-H3
C442
C441
C442-H3
L432
R435
R423
J404
KD
Y
C442-H2
C442 H1
C441-H1
R441
T431-H1 T431-H3
JP410
JP411
R477
JP404
T471-H2
J405
C471
JW6
R483
R481
R481A
T471-H7
T471-H11
T471-H6
T471-H4
T471-H8
T471-H10
Q432
Q432-H2
Q432-H3
Q432-H1
Q432A
JP483
R442
JP436
C423A
JP477
C437B
FC3G2 CHASSIS
TP-B
T471
JP435
Q613-H6
T431A
JP431
JP441
C355
JP441A
JP403
Q432B
Focus VR
(Upper side)
SM_21-C5GSH (Rus) 6/28/04 11:33 AM Page 15