Ricoh A172 - Page 498

Tech Service Bulletin No. A172/A199 – 016
Page 15 of 17
Enter SP Adjustments, page 16 (other SP adjustments). Go to adjustment 13 and change the data to 1.
This disables the Humidity Sensor. For more information, refer to the SM page 4-17.
Enter SP Test Mode page 4, select Output Mode and enter output number 31. Then select start as
illustrated below:
Monitor the meter reading. If adjustment is necessary, adjust VR 1 on the T2 High Voltage Supply Board
until the meter reads 1220VDC.
NOTE:
Confirm that the voltage at the front of the Transfer Roller is the same (1220VDC).
If different or erratic, replace the Transfer Roller Receptacle (AD021095) and apply conductive
grease KS660 SHIN-ETSU (G0049668) to theT2 bias voltage pin.
Return all SP modes to their original settings.
Continued…
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Input NO.00
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Lower part of SP Screen
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Check Voltage Here
Enter Output
Number 31