Ricoh Priport VT 6000 Service Manual page 88

29 January 1998
[A]
7. Open the scanner unit, and remove the thermal head cover [A].
8. Disconnect connector CN751 on the DC/DC converter board [B].
9. Check the voltage on the thermal head decal. (The value is different from one
thermal head to another.)
10. Turn on the main switch.
11. Access the SP mode and select output check mode (SP131) No. 41.
12. Press the Print Start key to apply thermal head voltage continuously (60
seconds).
13. Check the voltage between TP1 and TP2 on the DC/DC converter board. If the
voltage is out of the standard range (the value on the thermal head decal +0/-
0.1 volt), turn VR1 on the DC/DC converter board to adjust the voltage.
14. Leave the SP mode and turn off the main switch. Reinstall the removed parts.
[B]
CN751
TP1
5-3
MASTER FEED
TP2
VR1
C228R501.WMF