4
5
2
3
1
C
B
A
SCHEMATIC DIAGRAM
AG-790
FRONT PCB
INSTRUCTIONS FOR SERVICE PERSONNEL
BEFORE RETURNING APPLIANCE TO THE CUSTOMER, MAKE LEAKAGE-
CURRENT OR RESISTANCE MEASUREMENTS TO DETERMINE THAT EXPOSED
PARTS ARE ACCEPTABLY INSULATED FROM THE SUPPLY CIRCUIT.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
8R27
56k
OSC
LED1
STANDBY
LED3
LOUDNESS
LED2
MUTING
8R2
560
8R28
560
8R29
560
G1
G2
G3
G4
G5
G6
G7
G8
G9
G10
G11
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S12
KEY1
KEY2
KEY3
KEY4
VDD
VDD
VDD
2.1V
2.1V
+5V
-24V
VEE
VSS
LED1
LED2
LED3
LED4
LED5
STB CLK IC DIN DOUT
SW4
BAND
SW5
FM MODE
SW6
MEMORY
SW7
AUX
SW8
TAPE M
SW3
UP
SW2
DOWN
SW1
TUNING MODE
SW13
LOUDNESS
SW11
CD
SW10
PHONO
SW9
TUNER
SW12
SLEEP
SW14
BASS
SW16
BALANCE
SW15
TREBLE
8D3
1N4148
8D4
1N4148
8D5
1N4148
8D6
1N4148
8D7
1N4148
8R21
10K
8R22
10K
+5V
POW
DGND
0V
8R1
10K
8C2
100U/25V
8C3
100U/35V
8D2
1N4148
8C1
470U/16V
8R26
10K
8R25
10K
8R24
10K
8R23
10K
V F D
8C6
104
S13 S14 S15 S16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
+5V
8C4
10U/16V
REMOTE
VOLUME
+5V
8R20
10K
8C8
30
8C7
30
+5V
8R19
100k
8C5
104
8G1
4.433MHz
1
2
3
4
5
6
7
8
DATA
CLOCK
PERIOD
ST LED
STB
DATA
CK
TAPE
MUTE
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PA0
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
PC0
PC1
PC2
PC3
PC4
PC5
VSS
INT
RES
VDD
OSC1
OSC2
SDA
SCL
24C02
8R17
1k
8R16
1k
8R15
1k
8R14
1k
8R13
1k
8R12
1k
8R11
1k
8R10
1k
8R8
1k
8R7
1k
1
2
3
8R3
330
8R4
10K
8R5
10K
37
36
35
34
33
32
31
30
29
28
27
45
44
43
42
41
40
39
34
35
38
37
36
30
31
32
33
8
9
6
5
/TAPE
8V1
2SA1015
8R18
10K
1
2
3
4
5
6
7
1XP4
8TR1
5
6
7
8
9
8N
1
8N2
8N3
8VR1
1
2
3
4
1XP14
1
2
3
1XP5
1
2
3
1XP6
SENSOR
HT
48R50A
-1
PT6311
8D1
5V1
8R31
2R2
8R30
2R2
8R32
3k9
8R33
100
8C9
104
1 st Issue; March 2003
AM/FM Stereo Receiver
A
AG
G--779
90
0
NOTES:
£
Parts marked with this sign are safety critical components.
They must always be replaced with identical components-refer
to the appropriate parts list and ensure exact replacement.
