- 7 -
Check each voltage at connector S104 and S105
after removing each connector (female) from
power circuit board.
Pin No.3 (Ground) and 4,5,1,2 at S105.
Pin No.1 and 2 at S104.
CAUTION:
Proceed with the test only after removing the
wire leads from the primary winding of high
voltage transformer for your safety.
Test procedures:
a) Make sure that the power supply cord is not
plugged in.
b) Remove the connector S104 and S105 from
the power circuit board.
c) Plug the power supply cord.
d) And then, measure each voltage.
COMPONENT
POWER
P.C.B
CONTROL
P.C.B
Measure the voltage: Between test points TP-1, TP-
2 ,TP-3 and ground. (See Figure 12 on page 23)
Note
- Proceed with the check of the control P.C.B to see if
any one of the measured values is different from the
specified values.
CHECKOUT PROCEDURE
RESULT
Normal reading:
Connection
Pin No.
Voltage
S105
#3 to #4
DC 12V
#3 to #5
DC 16V
#3 to #2
DC 30V
#3 to #1
DC 35V
S104
#1 to #2
AC 2.4V
Test point
TP
Voltage
TP-1
DC - 5V
TP-2
DC - 12V
TP-3
DC - 16V
TP-4
DC - 35V
WARNING:
When removing the cabinet, you must disconnect the
power supply cord from the wall outlet for your safety.
Only the checkout procedure below needs the power
supply on. TAKE GREAT CARE to avoid possible shock.
For your safety, proceed with the test only after re-
moving the wire leads from the primary winding of
the high voltage transformer.
Lower
Upper
Primary
winding
Primary
winding
