Garland EM-C180 User Manual download pdf (Page 9)

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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

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 27 28

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