Details[Phenomenon]Fogged or ghost images may occur due to burning out of the pre-conditioning exposure lamp.

[Cause]The filament of the fuse lamp is weaker than the designed value, thus a broken wire is likely to occurdue to production variation.

[Factory measure]To improve the durability of the pre-conditioning exposure lamp, the material comprising the filament ofthe fuse lamp and its wire diameter have been changed.

How to distinguish between the old and new parts: The last two digits of the lot number marked on thepre-conditioning exposure lamp PCB (FM5-5005) are “02”. (The last two digits of the lot numbers of theold part are “01”.)

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Service parts

P.C.

440-3

440-3

Old

New

Old1

2

3

Old

Old

New

New

New

No. Description Part number Q’ty

1 → 0

0 → 1

1 → 0

0 → 1

FM5-5005-000

FM5-5005-020

FM5-0021-020

FM5-0021-030

Pre-con. exposure lamp PCB ass’y

Pre-con. exposure lamp PCB ass’y

Inter-change-ability

No Yes❈1

No YesPre-cond. exposure lamp ass’y(NP-A2S)Pre-cond. exposure lamp ass’y (NP-A2S)

LOCATION: PRE-CONDITIONING EXPOSURE LAMP ASSEMBLY

SUBJECT: PRE-CONDITIONING EXPOSURE LAMP BURN-OUT

No. : A2S-022

(G5-12E-022)

DATE: 23.-06.95

NP-A2SMODEL:

Major quality issues Quality upgrade/production efficiency

Field quality problems Miscellaneous

SERVICE BULLETIN COPIERIssued by Canon Europa N.V.