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1.4 Lens Motor Error
1) No drive signal to the motor
Check that the drive signal is observed at pins 1 and 2 of K16M (for focus motor) of the
power supply unit, pins 3 and 4 of K16M (for the zoom motor) and 1 and 2 pins of
K16L (for the lens shift motor).
Check that the drive signal is observed at pins 2 and 10 of IC1611, IC1602 and
IC1601 of the drive IC IC1611, IC1602, and IC1601.
Check IC1611, IC1602, IC1601 and peripheral circuits. Check the motor power
supply (9VA).
2) No drive signal to the motor drive IC
Check that the drive signals are observed at pins 5 and 6 of the drive IC IC1611,
IC1602 and IC1601. The signals are supplied from pins 4 and 5 (focus), pins 6 and
7(zoom) and pins 9 and 10 (lens shift) of D/A control IC, IC1641.
3) No drive signal output from the CPU
The motor drive signal is supplied from the main CPU IC801 through the IC bus.
4) No key switch signal applied to the CPU
A control signal (voltage) is supplied to pins 118 to 120 of IC801 when a control key
switch is pressed.
Part 4: Troubleshooting
4-8
IC1611/IC1602/IC1601 truth table
Input
Output
Operation
5
6
10
2
H
L
L
H
Forward rotation
L
H
H
L
Reverse rotation
H
H
L
L
Stop
L
L
-
-
Standby
10
2
30
29
7
9
10
6
5
118
119
120
6
2
3
IC1602
ZOOM
MOTOR DRIVE
IC801
MAIN CPU
10
2
5
6
1
3
3
4
IC1601
LENS SHIFT
MOTOR DRIVE
CONNECT
BOARD
M
M
ZOOM
MOTOR
LENS SHIFT
MOTOR
K16L
5
4
K8T
K16R
K9A
K9B
K9C
K8J
K8S
K68A
CONTROL BOARD
MAIN BOARD
DRIVE BOARD
FOCUS +
FOCUS -
LENS +
LENS -
ZOOM +
SCL
SDA
ZOOM -
TOP_DET.
CENTER_DET.
9
8
7
9
8
7
FOCUS
ZOOM
LEVEL +
LEVEL -
10
2
5
4
5
6
1
2
IC1611
FOCUS
MOTOR DRIVE
IC1641
D/A
MOTOR CONTROL
M
FOCUS
MOTOR
K16M
1
3
IC1801
I/O
EXPANDER
13
14
Fig. 4-4
Содержание D78-5232
Страница 2: ...CANON Power Projector LV 7545E D78 5231 SERVICE SMANUAL ...
Страница 9: ......
Страница 10: ...Part 1 General Information ...
Страница 23: ...7 SUPPORTED COMPUTER SYSTEM MODE See the attached sheet Owner s Manual page 26 Part 1 General Information 1 13 ...
Страница 24: ......
Страница 25: ...Part 2 Repair Information ...
Страница 46: ...Part 3 Adjustment ...
Страница 69: ...Part 4 Troubleshooting ...
Страница 86: ...Part 4 Troubleshooting 4 17 BH3540 Volume Control IC1652 CXA2101AQ RGB Matrix IC4101 ...
Страница 87: ...Part 4 Troubleshooting 4 18 FA5332M P F Controller IC601 FA7612CA PWC Controller IC6602 IC6603 IC6616 ...
Страница 90: ...Part 4 Troubleshooting 4 21 LB1645 Motor Drive IC1601 LC863316 SUB CPU IC1851 ...
Страница 91: ...Part 4 Troubleshooting 4 22 ML60851 USB I F IC9801 M62393 D A IC212 IC2381 ...
Страница 92: ...Part 4 Troubleshooting 4 23 M62399 D A IC3501 IC3551 PW365 System Control Scan Converter IC301 ...
Страница 93: ...Part 4 Troubleshooting 4 24 SII161ACT DVI I F IC8001 STR Z2156 Power Switching IC651 ...
Страница 94: ...Part 4 Troubleshooting 4 25 TA1287 RGB YUV Converter IC4551 TB1274AF Video Decoder IC1101 ...
Страница 95: ...Part 4 Troubleshooting 4 26 TDA7056 Audio Output IC1631 IC1632 ...
Страница 96: ...Part 5 Parts Catalog ...
Страница 97: ......
Страница 101: ...62 54 63 53 62 58 61 64 56 59 70 71 52 55 65 Page 2 CANON LV 7545J REF No D78 5231 LV 7545U D78 5232 LV 7545E D78 5233 ...
Страница 105: ...Page 4 CANON LV 7545J REF No D78 5231 LV 7545U D78 5232 LV 7545E D78 5233 23 a 23 b 23 51 b 51 a 51 43 43 2 ...
Страница 113: ...Part 6 Electrical Diagrams ...
Страница 130: ......