Remedy - Brother RH-9820 Service Manual

8-5-3. Remedy

Problem #1 The power indicator does not illuminate when the power is turned on.
Cause
1. Malfunction of voltage select
harness ***
For 200V specifications
2. Malfunction of transformer
100V, 200V, 220V specifications
380V, 400V specifications
Inspection/Remedy/Adjustment
a. Check if there is a broken wire in the voltage
select harness.
b. Disconnect the connector at the transformer
side, turn on the power and then measure the
voltage at the cord.
(The wiring position may vary depending on
the voltage specifications.)
OK if same as wall outlet voltage
Voltage
specifications
100V
110V
120V
200V
220V
240V
H220V
380V
400V
4876Q
• For 100V, 200V, 220V specifications
1) OK if there is continuity between pins
1-8, 2-8, 3-8, 4-8, 5-8 and 6-8 of the
8-pin connector coming out from the
transformer. [Fig. A]
2) OK if there is continuity between pins
1-2, 3-4 and 5-6 of the 6-pin connector
coming out from the transformer.
[Fig. C]
3) OK if there is continuity between pins
1-2 and 4-5 of the 5-pin connector
coming out from the transformer.
4877Q
[Fig. D]
• For 380V, 400V specifications
1) OK if there is continuity between pins
1-3, 2-3, 3-4 and 3-6 of the 6-pin
connector
transformer.
[Fig. B]
2) OK if there is continuity between pins
1-2, 3-4 and 5-6 of the 6-pin connector
coming out from the transformer.
[Fig. C]
4878Q
3) OK if there is continuity between pins
1-2 and 4-5 of the 5-pin connector
coming out from the transformer.
[Fig. D]
4879Q
Pin No.
6-8
5-8
4-8
3-8
2-8
2-7
3-6
2-3
1-3
coming out from
RH-9820
8. ELECTRICAL MECHANISM
Replacement if a malfunction
Voltage select harness ***
(*** indicates voltage
specifications)
Transformer
the
210