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BULLETIN NUMBER:
APPLICABLE MODEL: FT6645/6655
SUBJECT: BLOWN DC POWER SUPPLY FUSES
SYMPTOM:
• Blank Operation Panel
• No power throughout machine
CAUSE:
If downward pressure is applied to the Operation
Panel (in the area of the shaded circle), the leads
to Capacitor (C103) on the Operation Panel are
shorted as illustrated.
TEMPORARY COUNTERMEASURE:
Push the capacitor (C103) toward the ROM as
illustrated. This will prevent the leads of C103 from shorting as downward pressure will now bend (C103) to
the left and not straight down
Operation Panel PCB
UNITS AFFECTED:
All FT6645/6655 copiers manufactured between Serial Numbers A3354450038 ~ A3354470233 and
A3364450001 ~ A3364460300 respectively may exhibit the above mentioned symptom. All FT6645/6655
copiers manufactured after Serial Numbers A3354470233 and A3364460300 respectively have had the
capacitor (C103) repositioned toward the ROM so that when pushed, the leads will not bend into each other.
PERMANENT COUNTERMEASURE:
A Capacitor with a straight lead will be used for future Operation Panel PCB production.
6645/6655/6665-025
Normal leads
ROM
Operation Panel
Capacitor C103
Push C103 toward the ROM
ROM
09/30/94
Downward pressure
here shorts the leads to
C103 as illustrated below.
Shorted leads
C103
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