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KS-FX321
JVC KS-FX321 User Manual
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KS-F171
1-20 (No.49774)
4.4
LA4743K (IC981) : Power am
p.
•
Block diagram
11
6
20
1
4
10
15
25
13
14
16
12
9
8
5
7
2
22
17
19
18
21
23
24
3
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
IN 1
IN 2
ST BY
Vcc 1/2
Vcc 3/4
OUT 1+
OUT 1-
PWR GND1
OUT 2+
OUT 2-
PWR GND2
R.F
IN 3
IN 4
PRE GND
ON TIME
C
Muting &
ON T
ime Control
Circuit
Protective
circuit
Protective
circuit
Mute
circuit
Ripple
Filter
Stand by
Switch
N.C
+
+
0.22 F
2200 F
0.022 F
0.22 F
TA
B
+5V
ST ON
+
+
+
+
47 F
0.22 F
0.22 F
22 F
+
Mute
10K
+
3.3 F
OUT 3+
OUT 3-
Low Level
Mute ON
PWR GND3
OUT 4+
OUT 4-
PWR GND4
19
21
Table of Contents
SECTION 1
2
1.1 Safety Precautions
2
SECTION 2
3
2.1 Main body
3
2.1.1 Removing the front panel assembly (See Fig.
3
2.1.2 Removing the bottom cover (See Fig.
3
2.1.3 Removing the front chassis (See Fig.
3
2.1.4 Removing the heat sink (See Fig.
4
2.1.5 Removing the rear panel (See Fig.
4
2.1.6 Removing the main board (See Fig.
4
2.1.7 Removing the cassette mechanism assembly (See Fig.
5
2.1.8 Removing the head amplifier board (See Fig.
5
2.1.9 Removing the relay board (See Fig.
6
2.1.10 Removing the mecha bracket (See Fig.
6
2.1.11 Removing the switch (LCD & key) board (See Fig.
7
2.2 Cassette mechanism assembly
8
2.2.1 Removing the direction switch board (See Fig.
8
2.2.2 Removing the FF / REW lever assembly (See Fig.
8
2.2.3 Reattaching the FF / REW lever assembly (See Fig.
8
2.2.4 Removing the playback head (See Fig.
8
2.2.5 Removing the pinch-roller (R) and (F) assembly (See Fig.
8
2.2.6 Removing the cassette hanger / cassette holder (See Fig.
9
2.2.7 Removing the reel disc assembly (See Fig.
9
2.2.8 Removing the motor assembly (See Fig.
9
2.2.9 Removing the Flywheel (BF) and (BR) assembly (See Fig.
10
2.2.10 Removing the reel base assembly (See Fig.
10
2.2.11 Removing the mute switch board (See Fig.
11
2.2.12 Removing the power switch (See Fig.
11
SECTION 3
12
SECTION 4
16
4.1 LC75823W (IC651) : LCD driver
16
4.2 LC72362N-9B39 (IC701) : Micon
17
4.3 LC75421M-X (IC931): E. volume
18
4.4 LA4743K (IC981) : Power amp.
20
4.5 AN80T05LF (IC781) : Regulator
22
4.6 UPC1228HA (IC901) : Head amp
22
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JVC KS-FX321 Specifications
General
Brand
JVC
Model
KS-FX321
Category
Car Receiver
Language
English
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