
24
CIRCUIT CHECK PROCEDURE
1. Low Voltage Transformer (DMR-602FS) check.
The low voltage transformer is located on the P.C.B.
Measuring condition: Input voltage: 230V / Frequency: 50Hz
2. Voltage Check
Key check point
CHECK METHOD
IC1 PIN 7, 41, 42
IC1 PIN 11
IC1 PIN 23
IC1 PIN 8 or 9
1
2
3
4
5VDC
GND
NOTE
1. Secondary side voltage of the low voltage transformer changes in proportion to fluctuation of power source voltage.
2. The allowable tolerance of the secondary voltage is within
±
5% of nominal voltage
NOTE : Each measure point must to measured with GND points.
NO CHECK POINT REMARK
MEASURE POINT
WAVE FORM
REMEDY
REMARK
NO
1
2
MP1
MP2
CD 5V
±0.2
5
DC 14V
±
1.0
Replace VL1, EC1, C4, C6
Replace D13, D14, EC2
NO LOAD
NO LOAD
PRINTED CIRCUIT BOARD
3-5 50Hz input
27 VAC
30VAC
Terminal
Voltage
LOAD
NO LOAD
Содержание KOR-63XQ0S
Страница 24: ...23 WIRING DIAGRAM ...
Страница 26: ...25 KOR 63XQ BOTTOM VIEW Fig 6 Measurement Point GND MP2 MP1 ...
Страница 30: ...29 2 P C B CIRCUIT DIAGRAM Q TYPE ...