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8. ELECTRICAL MECHANISM
125
BAS-311G, BAS-326G
Problem #1 The power indicator does not illuminate when the power is turned on.
Cause Inspection/Remedy/Adjustment Replacement if a malfunction
3. Malfunction of power cord Disconnect connector P9 (ACIN) on the power
supply motor P.C. board from the circuit board,
turn on the power, and then measure the voltage
between pins 3-4 of the cord-side connector.
OK if same as wall outlet voltage
After inspecting, turn off the power and insert
connector P9.
4. Blown fuse Remove fuses F7 and F8 and check the
continuity.
OK if continuity
(If there is no continuity, replace the fuse and
then carry out the inspections in 5. )
Glass tube fuse
15A-250V
5. Malfunction of power supply
motor P.C. board
Disconnect connector P17 (M-MOTOR) of the
main P.C. board, turn on the power, and then
measure the voltages between the pins at the
cord-side connector.
OK if the voltages are as shown in the table
below.
After measuring, turn off the power, wait 5
minutes or more and then insert P14.
Power supply motor P.C.
board
6. Malfunction of main P.C. board With connector P17 (M-MOTOR) inserted into
the main P.C. board, turn on the power and then
measure the voltages between the pins at the
cord-side connector.
OK if the voltages are as shown in the table
below.
After measuring, turn off the power.
Main P.C. board
7. Malfunction of panel P.C. board Check that connector P1 (PANEL) is inserted
into the main P.C. board, and that connector
CN2 (MAIN) is inserted into the panel P.C.
board.
Panel P.C. board
Panel harness
Pin Nos.
+ side
−
side
Normal
voltage
1 3 +5V
2 4 +5V
6 5 +24V
7 5 +24V
Pin Nos.
+ side
−
side
Normal
voltage
1 3 +5V
2 4 +5V
6 5 +24V
7 5 +24V
4880Q
5085Q
5085Q