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[6] Check the voltage between TEST POINT TP30 and GROUND TP14 on the 100 CIRCUIT BOARD.
• A reading of 1.17 V DC provides a developer setpoint temperature of approximately 33.9°C (93.0°F).
• The higher the voltage reading across TEST POINTS TP14 and TP30, the higher the developer setpoint
temperature.
– Rotate POTENTIOMETER R25 clockwise
TP30.
– Rotate POTENTIOMETER R25 counterclockwise
TP14 and TP30.
Note
A 40 mV change between TP14 and TP30 equals a 0.1°F change in temperature.
Checking the Voltage Between TP30 and TP14
Figure 51
TEST POINT
TP14
POTENTIOMETER
R25
TEST POINT TP30
[7] After the READY LIGHT comes on, check the temperature reading on the calibrated THERMOMETER again.
(a) If necessary, adjust POTENTIOMETER R25 until you obtain a developer temperature reading of 33.9°C
(93.0°F).
[8] For the M43 and M43A PROCESSORS Only - if the temperature shown on the DEVELOPER
TEMPERATURE DISPLAY matches the temperature shown on the calibrated THERMOMETER, then the
DEVELOPER TEMPERATURE DISPLAY is calibrated correctly. If the temperature shown on the
DEVELOPER TEMPERATURE DISPLAY does not match the temperature shown on the THERMOMETER,
then you need to calibrate the DEVELOPER TEMPERATURE DISPLAY. See the calibration procedure in
the Service Manual, Publication No. 981090.
[9] Close the COVER on the ELECTRICAL BOX.
[10] Disconnect your ESD wrist strap.
[11] Slide the ELECTRICAL BOX and the SUPPORT SHELF into the PROCESSOR.
981088 – September 1995
P104
P103
Setting the Developer Temperature
to increase the voltage across TEST POINTS TP14 and
to decrease the voltage across TEST POINTS
P105
100 BD.
H130_0146HCB
H130_0146HA
59
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