Sanyo WF10 - PLV WXGA LCD Projector, Service Manual

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-25-
ASS'Y MOTOR&AUDIO
SP-OFF
AUDIO-MUTE
2
5
3
7
10
IC001
AUDIO_AMP.
K16A
SLO
T - SELECT
IC9002
ASS'Y CGMOTHER
K90K
Terminal board
- Component
Terminal board
- DVI
IC801
IC1801
K8F
K8E
I/O EXPANDER
CPU
K16B
K16F
Audio system
ASS'Y_MAIN
Terminal board
- AV
13
3
Terminal board
-DSUB15
19
10
9
7 2
IC1851
14
AUDIO_CONTROL
SDA
SCL
IC1871
1 3
5 7
K90C
SLOT_1
A
UDIO INPUT
L
R
33
122
K90D
SLOT_2
A
UDIO INPUT
L
R
33
122
K90E
SLOT_3
A
UDIO INPUT
L
R
33
122
K90F
SLOT_4
A
UDIO INPUT
L
R
33
122
L
R
MONIT
OR OUT
K38E
ASS'Y_RS232C
K38F
L-OUT
R-OUT
L
R
L
R
L
R
L
R
L
R
The terminal D-SUB15 and the SLOT-4 K90F do not exist
in some particular models.
K80H
K10H
K3101
K71H
No sound
Troubleshooting
■
Terminal boards DVI, Component, AV and
D-SUB15 :
1. Check that the R and L signals are correct.
Pins122(R) and 33(L).
K80H, K10H, K3101 and K71H.
Some of the Terminal boards are optional. Factory set of ter-
minal board is different by projector models. See “Input
jacks” of specifications on page-2.
■
Assembly Motor audio :
1. Check that the Vcc-voltages are correct.
2. Check that the R and L input signals are correct.
Pins 2(R) and 5(L) of IC001
3. Check that the AUDIO MUTE signal is correct.
4. Check that the SP-OFF signal is correct.
5. Check that the IC001 output signals are correct.
Pins 10(L) and 7(R).
■
Assembly CG-Mother :
1. Check that the R and L signals are correct.
Pins 3(R) and 13(L) of IC9002.
■
Assembly Main :
1. Check that the Vcc-voltages are correct.
2. Check that the R and L input signals are correct.
Pins 2 and 19 of IC1851
3. Check that the IC1851 output signals are correct.
Pins 7(L) and 14(R).
4. Check that the audio output signals are correct.
Pins 7(L) and 1(R) of IC1871.
5. Check that the AUDIO MUTE signal is correct.
6. Check that the SP-OFF signal is correct.
7. Check that the SDA-signal is correct. Pin 9 of IC1851.
8. Check that the SCL-signal is correct. Pin10 of IC1851.
This model is not equipped with the
SLOT
-4(Input-4).
Some of the Terminal boards are optional. Factory set of ter-
minal board is different by projector models. See “Input
jacks” of specifications on page-2.