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1
2
AD824 OVERALL CIRCUIT DIAGRAM 4/4 (PN, DC, SW, AC)
A
PN
B
C
D
OP AMP
to AD - CN002
E
Transistor Array
to MAIN - CN904
F
Transistor Array
G
GAIN
H
WORD CLOCK
1
I
J
SW
K
AC
L
BL
WH
BL
WH
(GR)
M
BR
BE
(GR/YE)
O
O
N
O
O
O
O
O
O
TO SERVICE PERSONNEL
Critical Components Infomation
Components having special characteristics are marked
P
and must be replaced with parts having specifications
equel to those originally installed.
Q
AD824
1
2
3
4
5
OP AMP
INTERNAL
2
3
4
5
6
SEL
DC
POWER
ON
/ OFF
KEC-92531
KEC-92531
Power Transformer
O
O
O
O
O
O
O
: Mylar Capacitor
: Ceramic Capacitor
: Capacitor
: Flame Proof C. Resistor
: Metal Film Resistor
: Metal Oxide Film Resistor
: not installed
Note: See parts list for details of circuit board
component parts
3
4
5
6
7
OP AMP
7
8
SEL
REGULATOR +15V
REGULATOR –15V
REGULATOR +15V
REGULATOR
–15V
REGULATOR +15V
REGULATOR +15V 2A
NJM7815FA(XD853A00)
REGULATOR +15V
3
2
1
D3SBA20 (VT359600)
DIODE STACK 4.0A 200V
6
7
8
9
+48V MASTER
OFF / ON
to MAIN-CN905
SYSTEM
RESET
KEC-92531
NJM7915FA(XD854A00)
µPC2405AHF (XR607A00)
NJM7905FA(XK309A00)
REGULATOR +5V
REGULATOR -15V
REGULATOR -5V
3
3
2
2
1
1
1: OUTPUT
1: OUTPUT
1: INPUT
1
2: COMMON
2: INPUT
2
2: COMMON
3
3: COMMON
3: OUTPUT
3: INPUT
D3SBA20 (XN011300)
S1WB (A) 60 (VB845300)
11ES4 (VB481900)
DIODE STACK 4.0A 200V
DIODE STACK 1.0A
DIODE
2
8
9
10
11
12
AD824
OP AMP
KEC-92527
to AD-CN001
to HA-CN001
to MYSL-CN052
to MAIN-CN906
PQ05RF2(XH672A00)
MTZJ7.5A(XQ554100)
REGULATOR +5V 2A
ZENER DIODE 7.5V
MTZJ33B(VQ558500)
ZENER DIODE 33V
MTZJ27B(VQ557800)
ZENER DIODE 27V
1
1: IN
2: OUT
1: OUTPUT
1
2
3
3: GND
1: ANODE
2: INPUT
2
4
4: ON/OFcont.
2: CATHODE
3: COMMON
D1F60 (VS201100)
DIODE
1
1
2
1: ANODE
1: ANODE
2: CATHODE
2: CATHODE
AD824
10
11
12
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
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