Sanyo EM-C1800MK, Service Manual

Page: 7 / 24

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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 14 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