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Check voltage at S104 and S105 after remov-
ing 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:
For your safety, proceed with the test only
after removing the wire leads from the pri-
mary winding of high voltage transformer.
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 : back in.
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 16 on page
23)
Note
- Proceed with the check of the control P.C.B to
see if any one of the measured values is differ-
ent from the specified values.
CHECKOUT PROCEDURE RESULT
Normal reading:
Connection
Pin No., Voltage(V)
S105
#3 to #4 DC 12
#3 to #5 DC 16
#3 to #1 DC 30
#3 to #2 DC 35
S104
#1 to #2 AC 2.4
Test point
TP, Voltage(V)
TP-1 DC - 5
TP-2 DC - 12
TP-3 DC - 16
TP-4 DC - 35
WARNING:
When removing the cabinet, you must disconnect
the power supply cord from the wall oulet for your
safety. Only the checkout procedure below needs
the power supply on. TAKE GREAT CARE to avoid
possible electrical shock.
For your safety, proceed with the test only
after removing the wire leads from the pri-
mary winding of the high voltage transformer
Lower
Primary
Winding
Primary
Winding
Upper