Motor Control Problems - Sanyo PLC-WM4500L Service Manual

Troubleshooting

Motor control problems

152
39
40
443
IC301
SYSTEM
CONTROL
<PW392>
EXPANDER
<TE7783>
179
19
134
241
340
67
STOP
LENS_UD_PWM L
LENS_UD_SW ANY
STOP
LENS_LR_PWM L
LENS_LR_SW ANY
FOCUS+
FOCUS-
ZOOM+
ZOOM-
IC6501
SW
<TC7W53>
77 1
LENS_UD_PWM
5
7
LENS_UD_SW
IC4801
I/O
76
1
LENS_LR_PWM
5
6
LENS_LR_SW
IC6541
SW
<TC7W53>
LENS_CH_POSI_EX
LENS_L_POSI_EX
LENS_R_POSI_EX
LENS_BOT_EX
LENS_TOP_EX
LENS_CV_EX
UP DOWN
H H
L H
RIGHT LEFT
H H
L H
3 4
FOCUS+_EX
1 2
FOCUS-_EX
IC5502
BUFFER
<74LVC14>
11 10
ZOOM+_EX
13 12
ZOOM-_EX
1 2
7
LENS_DOWN
3 4
6
LENS_UP
IC6551
INVERTER
<TC74ACT>
13 12
7
LENS_LEFT
6 11 10
LENS_RIGHT
STOP +
FOCUS - H H
FOCUS + H L
STOP +
ZOOM - H H
ZOOM + H L
-73-
K8M
FOCUS
5 1
1
IC5501
M
FOCUS
DRIVE
<BA6287>
4 7
2
ZOOM
5 1
IC5521 3
M
ZOOM
DRIVE
<BA6287>
4 7
4
LENS SHIFT
K8L
UP/DOWN
18 9
5
IC6502
M
UP/DOWN
DRIVE
<BA6920>
20 5
4
LENS SHIFT
LEFT/RIGHT
18 9
3
IC6521
M
LEFT/RIGHT
DRIVE
<BA6920>
20 5
2
LENS POSITION
SENSOR
8
9
10
11
12
13
-
L
H
-
L
H