Service Tables; Test Points (Main Control Board); Variable Resistors - Ricoh A219 Service Manual

4. SERVICE TABLES

4.1 TEST POINTS (Main Control Board)

Number Label
TP101 (HET)
TP102 (ADS)
TP103 (ETH)
TP104 (T. CON)
TP105

4.2 VARIABLE RESISTORS

Number
VR101 Main Control Board
VR1(VRC) High Voltage Supply Board - C/G/B/T/S Changes the charge corona voltage
VR51(VRT) High Voltage Supply Board - C/G/B/T/S Changes the transfer corona
VR152(VRB) High Voltage Supply Board - C/G/B/T/S Changes the standard
VR21(VRG) High Voltage Supply Board - C/G/B/T/S Changes the charge grid voltage
VR101(VRD) High Voltage Supply Board - C/G/B/T/S Changes the discharge plate
SM
CÓPIA NÃO CONTROLADA
Fusing thermistor output
Auto image density sensor output
Optics thermistor output
Toner density sensor target control voltage output
(TV) Toner density sensor output
Location
4-27
CÓPIA NÃO CONTROLADA
SERVICE TABLES
Monitored Signal
Function
Changes the ADS voltage
(2.5 ± 0.1 V)
voltage
development bias (base bias
voltage)
voltage
A219