Canon GP200 Service Manual page 308
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3. OPERATIONS AND TIMING
8
Checking the Photointerrupters
The photointerrupters may be checked either using a conventional tester or using service mode.
1. Using a Tester
1) Set the tester range to 12 VDC.
2) Connect the tester probe to GND (0 VDC) of the DC controller PCB.
3) Make checks as instructed.
2. Using Service Mode
1) Open the front door, and insert the door switch actuator into the door switch assembly; then, insert the
handle of the static eliminator cleaning brush into the fixing assembly releasing assembly.
2) Press the service switch.
3) Press the * key twice, and press 'I/O DISPALY' (*2*) to highlight; then, press the OK key.
4) Press the Page key to select the screen showing the desired address.
No.
Name
Tester probe
Service mode
Make checks; nor-
mal if as indicated.
Display reading
Tester reading
3–254
COPYRIGHT © 1996 CANON INC.
Download service manual and resetter printer at http://printer1.blogspot.com
PS1
Scanner home posi-
tion sensor (SCHP)
J107-A2
—
Move the scanner
from home position
during standby.
The scan-
The scan-
ner is at
ner is not
home
at home
position.
position.
—
—
about 5 V
about 0 V
CANON GP215/200 REV.0 JULY 1996 PRINTED IN JAPAN (IMPRIME AU JAPON)
PS2
Fixing film sensor
(FFD)
J109-3
DC PA0-bit0
Move the detecting
lever by hand dur-
ing standby.
The light-
The light-
blocking
blocking
plate is
plate is
present.
absent
1
0
about 5 V
about 0 V
PS3
Copyboard cover
open/closed sensor
(CBCC)
J113-B9
DC PA0-bit1
Open/close the
copyboard cover dur-
ing standby.
The copy-
The copy-
board
board
cover is
cover is
closed.
opened.
1
0
about 5 V
about 0 V
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