09/03
3-20
DC 3535/2240/1632, WC M24
IQ20
Initial issue
Image Quality
IQ20 1st BTR Checkout RAP
Procedure
Make a copy of the Color Test Pattern. If the high density gradation patches (100%, 85%, and
70%) for one or more of C, Y, M, or K appear to be light, perform the following:
•Refer to Figure 1. Check the wiring between the BTR1 HVPS (PL 9.1) and the HV contact
on the Drum Cartridges.
• Check the 1st BTR Monitor values as follows:
CAUTION
Do not allow the IBT to run longer than 10 seconds. Damage to the Transfer Belt may
occur because the automatic belt-walk adjustments are not performed while in dC140.
1. Enter dC140 [009-200]. Press Start. The monitor value should be low (typically 0 - 3)
2. Enter [009-051]. Press Start. After a few seconds, the value should jump signifi-
cantly.
3. Press Stop All.
NOTE: Do not enable more than one color at a time. Attempting to run more than one monitor
without clearing the previous code may cause the PWS to lock up.
4. Repeat steps 1 through 3, using 009-201, 009-202, and 009-203 as the input code.
If the value fails to increase significantly for one or more monitor codes, replace the BTR1
HVPS (PL 9.1).
•Refer to Figure 1. Check the connectors and wires shown for damage, contamination, or
loose connections.