AZ1550
From week 0135 onwards, the Conrol Board and the Keyboard are changed because a
new Microprocessor IC (7405) is used.
For servicing, please refer to the attached pages.
Wiring Diagram......................................................................6 - 2
Control board - circuit & layout diagram......................9 - 3 ..9 - 4
Keyboard - circuit & layout diagram ....................................12 - 2
Electrical partslist.....................................................16 - 7..16 - 8
Note :
Code number of new boards : 3140 113 3254x Key board
3140 113 3256x Control board
Service Information
SSeerrvviiccee
SSeerrvviiccee
Service
Product Service Group CE Audio
AZ 1550
A01-556
© 3140 785 22850
2001-09-28
Already published Service Informations: A01-552 3140 785 22780
INTENTIONAL LEFT BLANK
6 - 26 - 2
Transformer
Battery
0001
0002
0003
RED
0001
/00/05/10/13/14
BLUE
/01/11/11H
BLUE
/17
0002
ORANGE
RED
0003
BLACK
BLUE
280mm
3.8M
(For AZ1550)
DA11
CD-DRIVE
1800
15
1
1801
61
TAPE DECK
71
+
HYRW
73
8801
ATM 5
AF Board
Control
Board
ATM5 3B
ATM5 2B
280mm
ECO-MTF-MS
Power
Board
400mm
8251
180mm
80mm
180mm
8800
220mm
CD99 DA11
Feature Board
80mm80mm
8802
8402
8502
Tweeter
140mm
Keyboard
180mm
LCD
8803
180mm
Copper foil
(For AZ1565 only)
LEAF DOOR SWITCH
8501
480mm
80mm
8626
8 OHM
AD
8401
4 OHM
8625
8250
8105
180mm
140mm
220MM
LeftRight
400mm
140mm
180mm
8104
8103
8500
8550
4
5
6
7
1014
EH-B
Supply
GND
+
-
ITEM
VERSION
Tweeter
4 OHM 8 OHM
80mm
8400
+B
GND
REC_INFO
SDA/PWM
+A
GND
SCL/Search_mute
EH-B
1004
1
2
3
FE-ST-VK-N
1005
+B
GND
REC_INFO
SDA/PWM
+A
GND
SCL/Search_mute
FE-ST-VK-N
1406
DC
GND
1013
EH-B
Supply
GND
FE-ST-VK-N
1405
KEY1
KEY2
GND
1015
PH-B
J2
ENABLE
DATA
CLK
MONO_ST
GND
J1
KEY_EQ
KEY_DBB
KEY_IS
DBB
IS
+TUNER
FE-ST-VK-N
1725
LI
RI
GND
LO
+TAPE
RO
1402
FE-ST-VK-N
J2
ENABLE
DATA
CLK
MONO_ST
GND
J1
KEY_EQ
KEY_DBB
KEY_IS
DBB
IS
+TUNER
DOOR_SW
PH-B
1007
1400
FE-ST-VK-N
GND
+CD
R
GND
L
FE-ST-VK-N
1824
SILD
SICL
DATA
GND
/PORE
L
GND
R
+CD
GND
+A
FE-ST-VK-N1801
+A
+LW
FE-ST-VK-N
1407
SILD
SICL
DATA
GND
/PORE
DOOR_SW
FE-ST-VK-N
1823
5
4
3
2
1
1251
FE-ST-VK-N
L
GND
R
+TUNER
+FM
RO
GND
LI
+B
RI
EH-S
1500
7
6
FE-ST-VK-N
1625
LO
REC_INFO
+1
GND
+MOTOR
8110
L
GND
R
+TUNER
+FM
EH-S
1702
1420
FE-ST-VK-N
FE-ST-VK-N
1
1821
EH-B
+1
REC_INFO
1009
XH-B
2
FE-ST-VK-N
L
GND
R
+TUNER
+FM
+LW
EH-B
1006
+MOTOR
GND
4u7
2129
8110
MUTE
ALC
GND
+1
+A_ON
GND
+B
R
GND
L
4u7
2130
+A
MUTE
L
GND
R
+B
GND
+A_ON
+1
1550
FE-ST-VK-N
+A
1003
EH-B
1000
FE-BT-VK-N
ALC
GND
KEY1
KEY2
GND
WIRING DIAGRAM
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