Service Table (Compared With F21); Pm Table (Differences Between F21 And F22); Variable Resistors - Ricoh FT7770 Service Manual

5. SERVICE TABLE (Compared with F21)

5.1 PM TABLE (Differences Between F21 and F22)

Three PM parts have been modified, and the PM intervals have been
changed as follows:

5.2 VARIABLE RESISTORS

– Jam Indicator Board –
Number
VR1 (ADS) Adjusts the ADS input
VR2 (P-SW) Adjusts the image density
sensor voltage
Function
15-9
10 August 1990