-45-
Lens Motor Problems
Troubleshooting
No Sound
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 PC/AV-audio switching circuit.
Check IC001, audio-sw IC, and peripheral circuit. PC/AV_SW5
(PC:L) signal is applied on pin 10 of IC001 through Q041.
MUTE5 signal (Mute:H) is applied on pin 9 of IC001 output from
pin 12 of IC1803
through IC1351, buffer IC.
Is the audio signal
observed on the AUDIO-
OUT terminal?
Check Audio amp.and control circuit.
Check IC5001, audio-amp IC, and peripheral circuit. MUTE5
signal (Mute:L) is applied on pin 1 of IC5001, output from pin 12
of IC1803
through IC1351, buffer IC. VOL_CTL signal is applied on pin
4 for volume control, sent from pin 19 of IC3561.
Is the audio signal
observed on pin 6 of
IC5001?
Check audio output circuit.
Check speaker, connection of the terminals “K10T”, “K8F”.
Yes
No
Yes
No
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.
Check following steps.
Check following steps.
Summary of Contents for PLC-SU25
Page 50: ... 50 IC Block Diagrams AD8075 Selector IC201 AD8183ARU Selector IC1201 AN7513 Audio Amp IC5001 ...
Page 51: ... 51 AN5870SB RGB SW IC5201 IC Block Diagrams AD9884AKS A D IC8201 ...
Page 54: ... 54 IC Block Diagrams CXD3526GG LCD Driver Timing Generator IC401 FA5502 P F Control IC611 ...
Page 55: ... 55 LA7217 Sync Separator IC5361 M62392 D A IC3561 IC Block Diagrams ...
Page 56: ... 56 NJM2284M Switch IC2101 IC Block Diagrams M62393 D A IC281 IC7801 ...
Page 82: ...MB3 SU4000 MB3 SU2500 82 46 44 44 46 44 44 Mechanical Parts List 46 57 56 46 46 Optical PARTS ...
Page 83: ...MB3 SU4000 MB3 SU2500 83 44 44 54 67 Red 68 Green 69 Blue 44 44 44 Mechanical Parts List ...
Page 85: ...MB3 SU4000 MB3 SU2500 85 52 a 52 45 45 45 45 52 Mechanical Parts List ...
Page 86: ...MB3 SU4000 MB3 SU2500 86 Mechanical Parts List 58 70 63 71 57 60 65 59 64 66 51 55 62 ...
Page 88: ... MB3A Jan 2003 BB 400 Printed in Japan SANYO Electric Co Ltd ...
Page 92: ...Diagrams Drawings MB3A ...
