FUNAI LED22-T800M Service Manual page 47

Power Supply CBA Top 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.
CN501
CN701
1
1
6
D616
D614
HOT
L601
D615
C609
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.
COLD
3
D617
IC602
BC602
BC601
D609
Q602
D610
BC603
C611
R614 R619
D607
R622
R621
C601
C602
R618
R738
D707
R725
D706
R739
R575
D705
R726
Q702
R740
R735
R727
R736
C612
R741
R728
C608
C605
C570
D548
D531
JW504
C560
39
38
10-15
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.
C703
C704 R722
R723
R730
R729
Q503
C716
C715
R720
R745
R744
R743
R517
R742
C556
C558
R555
R556
L702
R541
R540
D503 C555
D555
D505
C509
C542
C508
C502
R653
C503
C559
R654 C501
5
D530 1
C514
C566
1
2
CN502
IC501
C539
C7A3 A3
JW501
JW502
C530
C527
R551
C531
D501
R548
R526
D523
F502 C571
R504
R512
C528
R519
R518
C525
C561
R550
C557
R552
C522
R549
D541
L506
Q517
D542
Q516 R563 R562
R553 C526 Q510
C544
C523
R566
R570
Q511
C524
C537 C506
Q509
C554
C551
R593
C550
D539 C552
R599
C515
D553
C545
R598
F503
C543
R502
R572
C546
C564
C507
R586
R543
R571
R544
R542 L505
R652
R567
D544
D546
C548
R516
C547
D532
R503
BA0CN6G02011