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Tech Service Bulletin No. A172/A199 – 020
Page 2 of 2
PROCEDURE CONTINUED:
6. While checking the Vt on the SP Data Output page 1, make copies of the C4 test chart (FC mode) until
the Vt stabilizes at | Vref – Vt | ≤ 0.2V.
7. Wait 5 minutes, then perform the "Process Control Self Check".
8. If necessary, perform the ACC and the printer gamma adjustment.
NOTE: When replacing the Developer for a machine with the above troubleshooting settings entered, do not
change the setting for the Vcnt correction (keep the Vcnt corrections off). However, do not set the
Vcnt compensation value manually. The Vcnt compensation value returns to 0 (no correction) when
the Developer initial setting is performed. If Vcnt compensation value is lowered after Developer
initial setting, image density will be too light.
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