Read Sharp 76DW-18H (serv.man2) Service Manual online
Dead
Neon
LP6701
Luminated
NICAM
and OPC
LED's
Luminated
F6701 and plug fuse failed, Check
Bridge rectifier (Tech bulletin CTV991004)
Q701
Q702
Q703
D718
Q702
Q703
D718
F6701 and plug fuse failed, Check
Bridge rectifier (Tech bulletin CTV991004)
Q701
Q702
Q703
D718
Q702
Q703
D718
Yes
No
Yes
Check
HT on D708
Cathode
Remove Plug CB
Remove Plug CB
No
Yes
Ensure that the aerial
is not connected
Ensure that the aerial
is not connected
NICAM
and OPC
LED's
Luminated
Power supply
and micro processor
working correctly
Check for line drive
Power supply
and micro processor
working correctly
Check for line drive
Power supply is working correctly
check data communication
Power supply is working correctly
check data communication
On Or Flashing
No
Check for Short circuit on a
supply other than the main HT
Check for Short circuit on a
supply other than the main HT
line Output Fault
goto chart 2
line Output Fault
goto chart 2
140v
Less Than
40v
Zero
Check
R704*
R705*
R705*
Q701
Q702
Q703
D718
Q702
Q703
D718
* fit 1 watt resistors
Check
R704*
R705*
R705*
Q701
Q702
Q703
D718
Q702
Q703
D718
* fit 1 watt resistors
Power Supply
Starts
Press button CH+
Remove R648
Remove R648
No
Yes
Reconnect Plug CB
Reconnect Plug CB
Power supply
was operating
in standby mode
Power supply
was operating
in standby mode
Check Protection circuit
IC1001 pin 78
5v = Normal
0V= switch to standby
Check Protection circuit
IC1001 pin 78
5v = Normal
0V= switch to standby
Power supply is
being held in
standby mode
check IC6702
Power supply is
being held in
standby mode
check IC6702
Power Supply Starts
Dead
Power Supply Starts
For A Few Seconds Only
Chart 1
CW100 Chassis
Flowcharts
Sharp Electronics (UK) Ltd
02/02/2000
Q
601
Short Cir
c
u
it
Ha
s
F601,
F602, D626,
D625 fa
ile
d
C
h
e
ck T601
a
n
d assocated
components
C
h
e
ck T601
a
n
d assocated
components
Check
D6
0
8
D6
1
2
D5
0
3
D5
1
3
Q
512
Q
509
Q
508
Q
507
Check
D6
0
8
D6
1
2
D5
0
3
D5
1
3
Q
512
Q
509
Q
508
Q
507
Re-sold
e
r
and t
e
s
t
Re-sold
e
r
and t
e
s
t
Yes
No
Yes
No
Check
Scancoils,T60
1
and T602
fo
r
poor
solderi
n
g
No
Yes
Check
D6
0
3
D6
0
9
D6
1
0
C6
0
4
+19v
Check
D6
0
3
D6
0
9
D6
1
0
C6
0
4
+19v
Char
t
2
Check
Telete
x
t
and O
S
D
Check
R1810
R1811
R1812
IC6111
Check
R1810
R1811
R1812
IC6111
P
icture
S
e
le
c
t an RGB
s
ource
S
e
le
c
t an RGB
s
ource
S
e
lect an AV
s
ource
S
e
lect an AV
s
o
urce
P
icture
IC6001
IC6001
'I
F' fault
or
I
C6001
'I
F' fault
or
I
C6001
Re-Flow Sold
e
r
A
round The
Followng Componen
ts
IC6002
IC6101
IC6108
IC6109
Re-Flow Sold
e
r
A
round The
Followng Componen
ts
IC6002
IC6101
IC6108
IC6109
Yes
Yes
Yes
No
No
No
Char
t
3
B
la
n
k Rastor
P
icture
Check
IC6002
IC6101
IC6108
IC6109
Check
IC6002
IC6101
IC6108
IC6109
No
CW100 Chassis
Flowcharts
Sharp Electronics (UK) Ltd
02/02/2000
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