Service Tables; Test Points; Variable Resistors - Ricoh FT5540 Service Manual

31 August 1989

2. SERVICE TABLES

2.1 Test Points

- Main Board -
Number
TP100
TP101
TP102
TP103
- Scanner Control -
Number
TP301
TP303
TP304
TP305
TP306
TP307
TP308
TP309
TP310
TP311
TP312

2.2 Variable Resistors

- ID Sensor Board -
VR
VR-1
- Main Board -
VR
VR-100
Function
Image density sensor input voltage
+24V
+5V
GND
Function
+24V(Vm)
Factory Use
Factory Use
Factory Use
Factory Use
Factory Use
Original Density Voltage
Scanner Forward Signal (Low Active)
Scanner Return Signal (Low Active)
GND
+5V(Vc)
Function
LED Light Intensity Adjustment
Function
ADS Voltage Adjustment
4-4