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Main CBA Bottom View < TV Section > (Type B)
CAUTION !
Fixed voltage ( or Auto voltage selectable ) power supply circuit is used in this unit.
If Main Fuse (F1601) 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.
CAUTION: FOR CONTINUED PROTECTION AGAINST RISK
OF FIRE, REPLACE ONLY WITH SAME TYPE 4A, 125V FUSE.
ATTENTION: UTILISER UN FUSIBLE DE RECHANGE DE
4A 125V
MÊME TYPE DE 4A, 125V.
WF16
PIN 8
OF TU1001
WF1
PIN 1
OF IC1001
WF6
PIN 11
OF IC1001
WF11
PIN 7
OF IC1551
WF12
PIN 4
OF CN1571
WF9
PIN 1
OF CN1571
WF10
PIN 3
OF CL501B
1-10-29
NOTE :
The voltage for parts in hot circuit is measured
using hot GND as a common terminal.
BECAUSE A HOT CHASSIS GROUND IS PRESENT IN THE POWER
SUPPLY CIRCUIT, AN ISOLATION TRANSFORMER MUST BE USED.
ALSO, IN ORDER TO HAVE THE ABILITY TO INCREASE THE INPUT
SLOWLY, WHEN TROUBLESHOOTING THIS TYPE POWER SUPPLY
CIRCUIT, A VARIABLE ISOLATION TRANSFORMER IS REQUIRED.
*
NOTE:
Either type A or Type B of MMA CBA (Main CBA and
CRT CBA) is used. The difference between type A
and type B is shown in the table below.
MMA CBA (Main CBA and CRT CBA)
Type A
BTD808F01012
Type B
BTD808F01013
WF20
PIN 10
OF CN002
WF19
PIN 7
OF CN002
WF18
PIN 3
OF CN002
WF17
PIN 1
OF CN002
WF2
PIN 14
OF IC1201
WF7
Q1572
Collector
WF8
Q1571
Base
1-10-30
BTD808F01013
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