Akai ACL-801 User manual

www.akai.ru
Model:
ACL-801
CAR TV

AKAI ACL-801 Servicing Map
1. No picture. No sound. backlight not light
Yes
Power on to check Power supply audion B 1204 E pole
+12V(Yes/No)
No
Press Power to check 1024 C pole output +12V
(Yes/ No) Check fuse +12V output
Yes No Yes No
Check high voltage
Surge circuit and signal
manage circuit
Check IC 37160
29 footsie +5V
(Yes/No)
Check and change
Power polarity
diode and power
on
Check Power Jack,
fuse and unit
current more than
1.5 A
Check 1204 front
controll audion
periphery parts
Change fuse
Check 1204 front
controll audion
periphery
parts(Yes/No)
Check and change
Power supply parts
such as transformer
and every Power
supply
NoYes
No No Yes Yes
Check and change IC 37160 and
IC 24C08 etc periphery parts Change buck

2 Backlight not light. Picture regular
Check high voltage surge circuit Power supply pipe
1202 C pole 12V(Yes/ No)
Yes No
Check and change high voltage surge audion
AB2C184 high voltage bag etc
Check high voltage Power supply pipe 1202
E pole +12V (Yes/ No)
Yes No
Check and Change IC5001
and correlative periphery parts
Check and change 1ȍ
resistance

3. Whole light (No picture. No sound. Backlight regular)
Yes
Check POWER transformer HD-30534 commutate voltage
output regular(+5V、+16V、-16V、+24V or 30 V)
0.8V above
0.5V-0.7V No
Check Screen arrange 1
footsie +16V 12 footsie
-16V 29,30,31,32 footsie
+5V regular(Yes/No)
Check
Transformercomm
utate diode regular
Check and change
current Power
3518
checkmainboar
d 3 footsie
complex
inphase regular
Checking
Power supply
parts
Check and
change
commutate
output
Change
parts
Check and
change
3518 and
periphery parts
Check and
change Power
supply current
Resistance
10Ω
Check 3Y26A 48 footsie
complex insphase regular
(Yes/No)
Checking and change screen and arrange 16,20
screen scanning to control circuit parts
Check and change
Power supply
current
Check 3Y26A 2 footsie complex inphase 4.8V(Yes/No)
Check and change 3Y26A Checking IC4011 13 footsie complex insphase regular(Yes/No)
Check and change 13
footsie buck parts Checking ICM61260 11 footse 5 footsie ,in phase signal output (Yes/ No)
Check and change
IC4011
Check ICM61260 12,44 12V 3.4.39.40 footsie 5V(Yes/No)
Yes
Yes
Yes
Yes
Yes
Yes
YesYes
No
No
No
No
No
No
NoNoYes No
Check 3158’5Footsie +12V
regular (Yes/No)
Check Power supply
circuit
Check and change
ICM61260

4 . No sound, picture regular
Touch IC61260 51 footse
souffle(Yes/No)
Touch IC61260 51 footse souffle(Yes/No)
Check IC61260 53
footsie audio frequency
signal input(Yes/No)
Check and change
nce 27Ωresista Check speaker,
Earphone jack
regular ( Yes/No)
Change parts
Check and change
LM386 and
periphery
parts
Check and change
C1uf/50V，4.7Ω，
Check IC61260 4 footsie +5V,
50 footsie ,52 footsie 3.4V
regular(Yes/No)
No
No
No Yes
Yes
No Yes
No
Yes
Yes
Check IC 61260 51
footsie and
correlative periphery
Parts ,resistance 10K
capacitance etc
Using disturb way touch ICLM386 3 footsie has souffle (Yes /No)
Yes No
Check and change
output parts Change IC61260

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