Canon NP6621 Service Handbook page 43

Notation
Name
(+) probe of meter
Service mode
Checks; normal if as
indicated.
Display
Meter measurements
Notation
Name
(+) probe of meter
Service mode
Checks; normal if as
indicated.
Display
Meter measurements
Q653-3
Cassette 3 size sensor 3 (C3SZ3)
J308-B1
No. 218 1-c
Slide out the cassette while in
standby, and operate the detection
lever with a finger. (paper selection
for cassette 2)
When the lever When the lever
is operated is not operated
0
—
PS3cu
Cassette 4 vertical path sensor
(C4VPD)
J308-A7
No. 214 1-c
Slide out the cassette while in
standby, and operate the detection
lever with a finger. (paper selection
for cassette 4)
When the lever When the lever
is operated is not operated
1
—
STANDARDS AND ADJUSTMENTS
Cassette 3 size sensor 4 (C3SZ4)
Slide out the cassette while in
standby, and operate the detection
lever with a finger. (power selection
for cassette 2)
When paper is
inserted
1
0
—
—
Cassette 4 paper sensor (C4PD*)
Slide out the cassette 4 while in
standby. (paper selection for
cassette 4)
When the
cassette is slid
out
0 0
—
—
Q654-3
J308-B2
No. 218 1-d
When paper is
not inserted
1
—
PS4cu
J308-A9
No. 215 1-a
When paper is
placed in the
cassette and the
cassette is slid
in
1
—
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