FUNAI LED22-T800M Service Manual page 48

Power Supply CBA Bottom View
Because a hot chassis ground is present in the power supply
circuit, an isolation transformer must be used when repairing.
Also, in order to have the ability to increase the input slowly,
when troubleshooting this type of power supply circuit,
a variable isolation transformer is required.
C720
C721
D518
D519
D516
C535
D517
D507
C534
R530
R568
C562
C533
C563
R569
IC504
Q514
C532
D509
L503
L504
F501
D549
L502
R533
R597
R532
D540
R546
R539
Q508
R538
R545 D511
D512
Q505
R536
R537
D510
D535
D536
R534 R535
C541
C540
CAUTION !
Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.
If Main Fuse (F601) is blown , check to see that all components in the power supply
circuit are not defective before you connect the AC plug to the AC power supply.
Otherwise it may cause some components in the power supply circuit to fail.
C713
C701
C708
R724 R733
R716
R709
C703
D701
R708
R717
R715
R734
R707
L701 C712
D703
R705
R719 D708
R713 D704
C710
R714
R712 R701 C707
R711
C718
C711
D702
R710
R721
R732
D521
C726 R718
C717
R573
C705
R579
R731
D515
C714
D502 R737
R703
C719
C706 R702
R501
R580
L702
R578
R704
R577
R574 D506
D525
R521
R522
R515
R559
R514
D504
C536
R557 Q507
R558
D514
Q502
R561 R560
R508
D552
R509
D543
R507
C516
D547
Q515
Q501
D527
D545
R505
R511
R506
D520
R510
Q506
C538
R585
C567
R651
D551
1
39
2
CN502 38
C518
R706
R584
R581
D603
Q513
R582
R523
D606
C517
R594 D612
R611
Q504
C606
R583
R524
R612
IC602
R525 C613
R633
D619
L603
L602
D604 D613
D548
D531
C569
D513
C519
10-16
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
CAUTION !
For continued protection against fire hazard,
replace only with the same type fuse.
COLD
C521 C520
R602
D605
D617
R601
D608
R603
D611
C607
C614
D618
R627
R630 R626
R632
BC602
BC601
R636
D609
Q602
R628
D610
BC603
C601
C602
R618
R610
R616 R617 R615
R607 R608
R606
R609
D602
C603
Q601
R604
R605
D601
C568
D616
D614
HOT
L601
D615
C609
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