SiBE12-908
Check
Service Diagnosis
161
3. Check
3.1
Fan Motor Connector Output Check
Check No.01
1. Check connector connection.
2. Check motor power supply voltage output (pins 4-7).
3. Check motor control voltage (pins 4-3).
4. Check rotation command voltage output (pins 4-2).
5. Check rotation pulse input (pins 4-1).
7
6
5
4
3
2
1
Motor power supply voltage
Unused
Unused
P.0V (reference potential)
Motor control voltage (15 VDC)
Rotation command voltage (1~ 5 VDC)
Rotation pulse input
Upper fan connector
S1
(R6940)
