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6-6
Chassis Block Diagrams
IC301
MAIN CPU
PO
WER
LAMP_REP
R_C
USB
CONTR
OL
POR
T
KEY
SWITTCH
R/C
RECEIVER
LED-On:
H
R/C BO
ARD
CONTR
OL BO
ARD
A
V
BO
ARD
SENSOR BO
ARD
MAIN BO
ARD
IC1801
OUTPUT
EXPANDER
IC1871
COMPARATOR
OPTION
RESISTORS
K10E
K8E
12
1
16
13
W
ARNING
15
14
K8G
K68B
45,46
174
182
From the power fail
detection diodes.
IC5201
SELECT
OR
IC101
VIDEO
DECODER
IC5003
AMP
IC401
COLOR CORRECT
IC5001
A
UD_SW
IC5002
V
OLUME
IC5303
SYNC_SW
IC1841
EEPROM
IC4801
NAND
IC9861
USB
CONTR
OL
IC8801
TEMP.
SENSOR
IC8802
TEMP.
SENSOR
IC8821
TEMP
.
SENSOR
M_SCL2/SD
A2
Q1843 Q1844
44,116
M_SCL1/SD
A1
P_SCL2/SD
A2
P_SCL1/SD
A1
Q1841 Q1842
IC501,
IC531,
IC561
S&H
IC9801
RS232C DRIVER
RECEIVER
173
47,181
140
1
2
178
K50B
K10D
K50A
RESET
SW
K8H
K88A
P_F
AIL
KEY01-03
17-19
READ
Y
12
MUTE
FAN_SW
ON_3.3V
IC5631
IC1802
OUTPUT
EXPANDER
19
TURBO_ST
13
12
R/G/B_ST
14-16
R_V1/V2
14-15
B_V1/V2
18-19
G_V1/V2
16-17
PC/A
V_SW
VO
L
IC3551
DAC
14
15
A
UD_PC/A
V
12
13
FIL
T_480P
5
CBAL_SW
NRSA/B
FA
N_CONT3
IC3561
DAC
18-19
4-6
FAN_CONT2
15
16
FAN_CONT1
14
REF_RGB
KEY11-13
2-4
2-3
S_SW
9
LAMP_ERR
8
OPTION2
OPTION1
6
7
5
OPTION3
3,5
1
15-14
19
17-18
7
K8811
K48L
K68C
Alw
a
ys A
v
ailab
le
Alw
a
ys A
v
ailab
le
Standb
y off
Standb
y off
PO
WER
LAMP_REP
W
ARNING
IC1811
BUFFER
IC1814
BUFFER
3
2
D0 - D15
A1 - A21
SCLK/SD
AT
A_PW
IC1882
SUB CPU
IC1881
INVERTER
S-VIDEO
S_SW
USB+/USB
-
CPU_RESET
RXD1/TXD1
FIL
T_480P
DIMMER
ON/OFF
LAMP_DET
FA
N
CONTR
O
L
PO
W_ON
IC351
B
UFFER
IC9401
TURBO
PO
WER BO
ARD
CN202
K8A
3
4
5
2
LAMP B
ALLAST
CN300
K48K
1
5
4
SW BO
ARD
LAMP CO
VER SW
SW8801
1-2 3-4
NMI
RXD/TXD
56,127
WR/RD
LAMP_PO
W
FAN_ERR
LAMP_PWM
117,180
SCLK/SD
AT
A
6
5
IC1821
B
UFFER
IC8201
A/D
IC3571
DAC
IC5302
YUV_SYNC
4
7
4
3
1
6
4
2
9
11
10
2
4
1
6
IC361
OR GA
TE
5
3
IC801
FLASH
TXL
SCEL
RXL
IC1861
INVER
TER
P_SCL1/SD
A1
ERR
OR :
L
ERR
OR :
L
Lamp-ON :
H
P
ow
er-ON :
H
ERR
OR :
H
ERR
OR :
H
ERR
O
R :
Open
Lamp-ON :
L
Lamp Dimmer Control
L = Lo
w beam.
H = High Beam
Mute-ON :
H
3.3V to 5V
3.3V to 5V
red
yellow
green
red
KEY14-15
●
System Controls
Содержание LV-S3E/D78-5423
Страница 2: ...CANON Multimedia Projector LV S3U D78 5422 LV S3E D78 5423 SERVICE SMANUAL ...
Страница 9: ...Part 1 General Information ...
Страница 24: ...Part 2 Repair Information ...
Страница 42: ...Part 3 Adjustment ...
Страница 59: ...Part 4 Troubleshooting ...
Страница 73: ...Part 4 Troubleshooting 4 14 BA7078AF Sync Detector IC5301 BA9743AFV DC DC Converter IC371 ...
Страница 74: ...Part 4 Troubleshooting 4 15 LM4865 Audio Amplifier IC5003 PW168A Scaler Main CPU IC301 ...
Страница 75: ...Part 4 Troubleshooting 4 16 TA1370FG Sync Separator Frequency Counter IC5302 VPC3230D Video Decoder IC101 ...
Страница 76: ...Part 5 Parts Catalog ...
Страница 77: ......
Страница 93: ...Part 6 Electrical Diagrams ...