Ricoh G176 Service Manual page 108

Printer Engine Service Mode
Fusing Temp DFU
1105
Adjusts the fusing temperatures for printing and standby mode.
1105 001 Fusing Temp
1105 002 Fusing T Stand
Fusing T Disp(lay)
1106
Displays the current fusing temperature.
OP LoopBack Check
1901
Do the loop-back check to test the operation of the optional tray and
duplexer.
1901 001 Summary
G176/G177/G176L
Adjusts the fusing temperature for printing on normal
paper.
[150 to 195/180/5 deg.]
Adjusts the fusing temperature for standby mode.
[140 to 185/168/1 deg.]
Displays a bit array to indicate the status of the engine
components. "000" indicates all normal. A "1" indicates a
problem at the component designated by its position in
the array.
Bit What It Means If "1" Appears
0 Bank problem (optional tray)
1 Bin problem (Ignore, not used for this machine)
2 Duplexer problem
5-6 SM