1.4 Lens Motor Problems
Check following steps.
Part 4: Troubleshooting
4-6
Logic Table of IC5501/IC5551
Input
Output
Operation
4
5
7
1
H
L
L
H
Forward drive
L
H
H
L
Reverse drive
H
H
L
L
Braking
L
L
-
-
Stand by
Check the power supply (7VMCI) circuit, IC5501 and IC5551 and
peripheral circuit. Check Key SW board.
Both of ZOOM and
FOCUS motors are
not functioning.
No
Yes
Check the ZOOM motor control circuit.
Zoom motor is controlled by signal ZOOM +, - output from
pins 1 and 7 of IC5501. These control signals are driven
by IC301, system control IC, and applied to pins 4 and 5
of IC5501 through the IC1804, I/O-sw IC.
Only ZOOM motor is
not functioning.
No
Yes
Check the FOCUS motor control circuit.
Focus motor is controlled by signal FOCUS +, - output
from pins 1 and 7 of IC5551. These control signals are
driven by IC301, system control IC, and applied to pins 4
and 5 of IC5551 through the IC7801, D/A IC.
Only FOCUS motor is
not functioning.
No
Yes
Check logic table of motor
drive ICs, IC5501, IC5551.
Содержание D78-5382
Страница 2: ...CANON Power Projector LV 5200U D78 5382 LV 5200E D78 5383 SERVICE SMANUAL ...
Страница 9: ...Part 1 General Information ...
Страница 25: ...Part 2 Repair Information ...
Страница 45: ...Part 3 Adjustment ...
Страница 65: ...Part 4 Troubleshooting ...
Страница 84: ...Part 4 Troubleshooting 4 19 AD9884AKS A D IC8201 AN5870SB RGB SW IC5201 ...
Страница 87: ...Part 4 Troubleshooting 4 22 FA5502 P F Control IC611 CXD3526GG LCD Driver Timing Generator IC401 ...
Страница 88: ...Part 4 Troubleshooting 4 23 LA7217 Sync Separator IC5361 M62392 D A IC3561 ...
Страница 89: ...Part 4 Troubleshooting 4 24 M62393 D A IC281 IC7801 NJM2284M Switch IC2101 ...
Страница 91: ...Part 4 Troubleshooting 4 26 VPC3230D Video Decoder IC3101 ...
Страница 92: ...Part 5 Parts Catalog ...
Страница 94: ......
Страница 97: ...58 70 63 71 57 60 65 59 64 66 51 55 62 Page 2 CANON REF No LV 5200U D78 5382 LV 5200E D78 5383 ...
Страница 101: ...45 45 45 45 52 52 a 52 Page 4 CANON REF No LV 5200U D78 5382 LV 5200E D78 5383 ...
Страница 105: ...Page6 CANON LV 5200U REF NO D78 5382 LV 5200E D78 5383 A B C A6800 E FUSE LF901 L901 902 L903 LABEL2 ...
Страница 107: ...U 1 U 2 V 1 W X Y Z 1 Page 7 Z 2 CANON REF No LV 5200U D78 5382 LV 5200E D78 5383 ...
Страница 111: ...Part 6 Electrical Diagrams ...