10-17
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.
CAUTION !
Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.
If Main Fuse (F602) 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.
For continued protection against risk of fire,
replace only with same type 2.5A, 250V fuse.
CAUTION ! :
ATTENTION :
Utiliser un fusible de rechange de même type de 2.5A, 250V.
2.5A 250V
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
D1705
J1451
GND
J1462
Protect3
VLED2
J1472
J1477
BL-SW
J1479
OVP
J1482
P-ON-H2
CN1001
C1018
C1019
C1021
D1003
D1004
D1009
D1010
R1013
R1018
R1019
D1021
D1022
D1023
D1024
R1020
R1021
R1022
R1023
R1024
R1025
R1036
R1037
R1038
R1039
R1040
R1041
R1042
R1043
R1046
R1047
R1048
R1049
R1051
GP002
5
J1463
J1465
ALL+3.3V
J1471
P-ON+20V
J1473
P-ON+20V
CN651
J1480
BL-ADJ
J1488
P-ON-H2
C655
C656
C657
C664
C1002
C1007
C1008
Q1004
Q1005
Q1006
C1012
C1013
C1017
D651
D1002
D1011
D1013
D1014
R1014
R1015
R1016
R1017
R1028
R1029
R1030
R1044
R1050
R1052
R1053
R1057
Q657
Q658
J1461
P-ON+20V
R651
R653
J1464
D655-Cathode
R654
J1466
P-ON+20V
J1467
P-ON+20V
R657
J1468
P-ON+20V
J1469
P-ON+20V
R659
R660
R661
R662
R663
R667
R669
R671
R677
R678
R679
R680
J1490
GND
C652
C653
C654
C658
C660
C663
D652
D653
D656
D657
IC651
GP001
Q651
Q652
Q653
R605
R608
C606
R652
R655
R656
R658
C625
C626
D655A
C659
D610
D621
IC602
D664
D621A
D664A
BC602
R630
R631
C619
C665
T601
D655
IS
J1476
N2
J1484
Vcc
C1003
C1004
C1005
C1006
C1009
C1010
C1011
C1022
R1005
R1006
IC1001
R1010
D1015
R1011
R1012
D1017
D1018
C1015
C1016
C1020
D1006
D1007
D1008
R1031
R1032
BAA7U1F0102 1
4
C1704
Q691
Q692
J1470
ALL+3.3V
T1702
J1483
GND
R691
R692
R693
R694
R695
C691
C693
C1014
D1005
IC1602
R1638
3
J1450
GND
C1023
R1055
R1056
R604
R612
R616
R617
R618
R620
R623
R626
R627
R628
R629
R632
R633
C605
J1452
IS
J1453
FB
C607
J1454
Vcc
C608
J1455
OUT
J1456
PFC-GND
J1457
VH
J1458
J1459
Drive
C610
C611
C613
J1460
D610-Cathode
C615
C621
C624
J1486
PFC-GND
D609
D613
D614
IC601
D623
IC624
C1602
Q1607
C1618
R1639
R1656
Q601
Q603
Q609
R610
R611
R614
J1432
PFC-VOUT
J1433
PFC-VOUT
R624
R625
C602
D607
Q1604
C1621
C1622
D1608
R1633
R1634
R1637
R1657
J1447
D605-Cathode
C616
C620
D601
D602
D604
D605
D606
C1612
R1624
GP004
L601
C999
A
R601
C614
D603
Q1602
BC1602
D1603
R1612
T1602
L602
C1613A
B
CN601
J1436
ZCDB
J1438
PRI-GND
ZCDA
J1439
J1442
VSENSE
C604
C1601
C1603
C1604
C1605
C1606
C1607
C1608
C1609
C1610
C1611
R1606
R1607
R1608
R1609
IC1601
D1610
R1610
R1611
R1613
R1614
R1615
R1616
R1620
R1621
R1622
R1623
R1626
R1627
GP003
R1630
F602
R1645
R1653
R1654
R1655
SA601
C
1
C1701
C1703
Q1702
Q1703
Q1704
J1434
HVSEN
J1435
VSENSE
D1702
D1703
D1704
R1701
R1704
R1705
R1706
R1707
J1440
GDB
R1708
J1441
PFC-GND
J1443
GDB
J1444
Vcc
R1601
R1602
R1604
R1605
R1617
R1618
R1619
R1625
R1629
2
C1702
Q1701
D1701
R1702
R1703
J1445
T1701-2
J1446
T1701-4
C618
T1701
Q1601
BC1601
D1605
T1601
C1614A
J1481
BL-ADJ
J1475
J1
J1400
Q1607 Base
J1487
PFC-VOUT
J1489
PFC-VOUT
ZCDB
J1437
BAA7U1F01021