JVC KS-LX200R User Manual 2
SERVICE MANUAL
CASSETTE RECEIVER
KS-LX200R
E
EX
KS-LX200R
KS-LX200R
Area Suffix
Continental Europe
Central Europe
Contents
Safety precaution 1-2
Disassembly method 1-3
Adjustment method 1-13
Description of major ICs 1-17
78
9 11 12
KS-LX200R
OFFSEL
10
This service manual is printed on 100% recycled paper.
COPYRIGHT 2000 VICTOR COMPANY OF JAPAN, LTD.
No.49573
Oct. 2000
1-1
Description of major ICs
BA4905-V3 (IC961) : Regulator
1.Pin layout
1234 56 78 9101112
2.Block diagram
KS-LX200R
REGULATOR
EXT
RESET
1 2 3 4 5 6 7 8 9 10 11 12
RESET COMP VDD 5.7V CD 8V VCC AJ
EXT ACC AUDIO 9V CTRL ILM 10V GND
3.Pin function
Pin no. Symbol Function
1
2
RESET
EXT output
If VDD voltage becomes 4V or less.RESET output becomes low level.
This output voltage is approximately 0.5V lower than VCC. and max
output current is 300mA.
3
COMP output
A voltage supply for ACC block. This output voltage is approximately
0.7V lower than VDD'S. The max output current is 100mA.
4
5
ACC
VDD output
Control of the COMP output by inputting voltage.
This output voltage is 5.7V, and max output current is 100mA.
This voltage supply is for microcomputer. Whenever back up voltage
supply is connected, the output keeps on running.
6
AUDIO output
This output voltage is 9.0v, and max output current is 500mA.
This voltage supply for AUDIO.
7
CD output
This output voltage is 8.0V, and max output current is 1A.
This voltage supply for CD.
8
9
10
CTRL
VCC
ILM output
Output selector of CD. AUDIO, ILM and EXT.
To be connected with the BACK UP of car.
This output voltage is 10V, and max output current is 500mA.
Output voltage is adjustable.
11
AJ
Putting a resistance between ILM and AJ or between AJ and GND
makes ILM output voltage adjustable.
12
GND
Ground.
Overvoltage
protection circuit
37K
5K
1-17
KS-LX200R
CXA2510AQ (IC401) : Head AMP / Dolby
1. Pin layout & Block diagram
30 PBEQ2
29 PBOUT2
28 GND
27 TAPEIN2
26 AUXIN2
PBFB2 31
PBRIN 32
PBREF2 33
PBFIN2 34
VCT 35
PBGND 36
PBFIN1 37
PBREF1 38
PBRIN1 39
PBFB1 40
VCT
-
F1
F2
-
120 /70
+
+
120 /70
T2
X1
TAPE / AUX
FWD / RVS
LPF
X1
T1
25 DIREF
24 LINEOUT2
+
NR BIAS
TAPE EQ
Vcc
+
F3
+
OFF/
-
B / C
-
23 TCH2
NR
NR
22 TCL2
MS MODE
NR MODE
MS ON/
OFF
DET
21 MSSW
20 MSMODE
19 DRSW
18 TAPESW
17 INSW
16 NRSW
15 MRMODE
14 MSOUT
13 DGND
12 MSTC
11 G1FB
2. Pin functions
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
PBEQ1 1
PBOUT1 2
Symbol
PBEQ1
PBOUT1
Vcc
TAPEIN1
AUXIN1
MSLPF
LINEOUT1
TCH1
NC
G2FB
G1FB
MSTC
DGND
MSUOT
NC
Vcc 3
TCL1 9
AUXIN 5
TAPEIN1 4
MSLPF 6
TCH1 8
LINEOUT1 7
I/O
O
Resistance for selecting the equalizer amplifier time constant.
O
Playback equalizer amplifier out put.
Power supply
TAPE input.
I
External input.
I
Cut-off frequency adjustment of the music sensor LPF.
Line out.
O
Time constant for the HLS.
Non connection.
Music signal interval detection level setting.
-
G2FB 10
Functions
Time constant for detecting the music signal interval.
Logic ground (Connect to GND)
Music sensor output.
O
Non connection.
I
1-18
KS-LX200R
Pin
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
Symbol
NRSW
INSW
METAL
DRSW
FF/REW
MSSW
NC
TCH2
LINEOUT2
DIREF
NC
TAPEIN2
GND
PBOUT2
PBEQ2
PBFB2
NC
PBREF2
PBFIN2
VCT
PBGND
PBFIN1
PBREF1
NC
PBFB1
I/O
I
Dolby NR control L:NR OFF H:NR ON
I
Line amplifier input select control L:TAPE IN H:AUX IN
I
Playback equalizer amplifier control L:120us H:70us
I
Head select control L:FORWARD H:REVERSE
I
Music sensor mode control Low(open):G1 High:G2
I
Music sensor control Low(open):MS on High:MS OFF
-
Non connection
-
Time constant for the HLS
O
Line output
-
Resistance for setting the reference current (Connects 20(18)K
between DIREF pin and GND for the standard setting.)
-
Non connection.
I
TAPE input.
-
To ground.
O
Playback equalizer amplifier output.
O
Resistance for selecting the playback equalizer amplifier time constant
I
Playback equalizer amplifier feedback.
-
Non connection.
O
Playback equalizer amplifier reference (Vcc/2 output)
I
Playback equalizer amplifier input (FORWARD head connected)
O
Center (Vcc/2 output)
-
Playback equalizer amplifier ground (Connect to ground)
I
Playback equalizer amplifier input (FORWARD head connected)
O
Playback equalizer amplifier reference (Vcc/2 output)
-
Non connection.
I
Playback equalizer amplifier feedback.
Functions
NJM4565M-W (IC951,IC171,IC323) : Ope amp.
V-
1
2
8
V+
7
B OUTPUT
AB
3
4
6
B -INPUT
5
B +INPUT
A OUTPUT
A -INPUT
A +INPUT
1-19
KS-LX200R
KA3031 (IC831) : Motor driver
1. Pin layout
48 ~ 37
1
36
~
12
13 ~ 24
2. Block diagram
1
IN1.2
2
OUT1
3
IN2.1
4
IN2.2
5
OUT2
6
IN3.1
7
IN3.2
8
OUT3
9
IN4.1
~
25
IN1.1 REG50 REG050 REF SVCC RES50 OPIN(+) OPIN(-) OPOUT PVCC2 DO1.1 DO1.2
48 47 46 45 44 43 42 41 40 39 38 37
T.S.D
O.V.P
+
-
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
D
D
2P
2P
2P
2P
2P
2P
2P
2P
2P
2P
2.5V
SW
+ -
+
-
+
-
+
-
+
-
-
+
-
+
-
+
-
+
S
W
ALL MUTE
+
-
+
-
+
-
+
-
M
S
C
36
35
34
33
32
31
30
29
28
DO2.1
DO2.2
PGND3
DO3.1
DO3.2
PGND2
PGND1
DO4.1
DO4.2
1-20
IN4.2
OUT4
CTL1
+
10
11
12
S
W
MUTE4
MUTE3
MUTE2
MUTE1
M
S
C
D
-
D
2P
2P
13 14 15 16 17 18 19 20 21 22 23 24
FWD1 REV1 CTL FWD2 REV2 SGND MUTE1 MUTE2 MUTE3 MUTE4 PVCC1 DO6.2
27
26
25
DO5.1
DO5.2
DO6.1
3. Pin function
Pin No. Symbol I/O Function Pin No. Symbol I/O Function
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
IN1.2
OUT1
IN2.1
IN2.2
OUT2
IN3.1
IN3.2
OUT3
IN4.1
IN4.2
OUT4
CTL1
FWD1
REW1
CTL2
FED2
REW2
SGND
MUTE1
MUTE2
MUTE3
MUTE4
PVCC1
DO6.2
I
CH 1 op-amp input (-)
CH 1 op-amp output
O
CH 2 op-amp input (+)
I
CH 2 op-amp input (-)
I
CH 2 op-amp output
O
CH 3 op-amp input (+)
I
CH 3 op-amp input (-)
I
CH 3 op-amp output
O
CH 4 op-amp input(+)
I
CH 4 op-amp input (-)
I
O
CH 4 op-amp output
CH 5 motor speed
I
control
CH 5 forward input
I
CH 5 reverse input
I
CH 6 motor speed
I
control
CH 6 torward input
I
CH 6 reverse input
I
Signal ground
CH 1 mute
I
CH 2 mute
I
CH 3 mute
I
CH 4 mute
I
Power supply voltage
-
(For CH 5, CH 6)
CH 6 drive output
O
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
DO6.1
DO5.2
DO5.1
SO4.2
DO4.1
PGND
PGND
DO3.2
DO3.1
PGND
DO2.2
SO2.1
SO1.2
DO1.1
PVCC2
OPOUT
OPIN(-)
OPIN(+)
RES50
SVCC
REF
REG050
REG50
IN1.1
O
CH 6 drive outout
CH 5 drive output
O
CH 5 drive output
O
CH 4 drive output
O
CH 4 drive output
O
Power ground
Power ground
CH 3 drive output
O
CH 3 drive output
O
Power ground
CH 2 drive output
O
CH 2 drive output
O
O
CH 1 drive output
O
CH 1 drive output
Power supply voltage
-
(For CH 1, CH 2, CH 3, CH 4)
Opamp output
O
Opamp input (-)
I
Opamp input (+)
I
Regulator 5V reset
I
Signal supply voltage
Bias voltage input
I
regulator 5V output
O
Regulator output
O
CH 1 opamp onput (+)
I
KS-LX200R
BU4066BCF-X (IC322) : Switch
1.Pin l ayout
14 13 12 11 10 9 8
1 2 3 4 5 6 7
2.Block diagram
VDD
14 13 12 11 10 9 8
1 2 3 4 5 6 7
I/O 1
C1
O/I 1
C4
O/I 2
I/O 4
I/O 2
O/I 4
C2
O/I 3
C3
I/O 3
VSS
1-21
KS-LX200R
UPD784215AGC113 (IC701) : UNIT CPU
1.Pin layout
75 ~ 51
76
~
50
~
100
1 ~ 25
26
2.Pin function
Pin No. Symbol I/O Function
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
FF/REW
DOLBY
MS-OUT
F/R
HOLD
TRAYCNT
DIMMER-OUT
LCD-POWER
VDD
X2
X1
VSS
XT2
XT1
RESET
SW1
BUS-IN
PS2
CURUISE
RDS-SCK
RDS-DA
REMOCON
AVDD
AVREF0
NC
NC
KEY0
KEY1
KEY2
LEVEL
SQ
S.METER
AVSS
W-VOL
DOT CONT
AVREF
BUS-SI
BUS-SO
BUS-SCK
STAGE2
LCD-DA
LCD-CL
LCD-LEI
BUZZER
E2PR-DA-I
E2PR-DA-O
E2PR-CLK
BUS-I/O
TM0
TM1
I/O
I/O
I/O
I/O
Output for input signal level switching for MS.
O
Dolby on "H" output.
O
MS output.
O
Fwd, REV direction switch signal input.
I
Non connect
Tray light control signal output.
O
Dimmer signal output.
O
Non connect.
Power supply terminal.
Connecting the crystal oscillator for system main clock.
O
Connecting the crystal oscillator for system main clock.
I
Connect to GND.
Connecting the crystal oscillator for system sub clock.
O
Connecting the crystal oscillator for system sub clock.
I
System reset signal input.
I
Cassette mechanism detect switch.
I
J-BUS signal cut in input.
I
Power save 2.
I
CRUISE signal input.
I
RDS selial clock input.
I
RDS data input.
I
Remove control signal input.
I
Power supply terminal.
Connect to GND.
Connect to GND.
Connect to GND.
Key control 0 input.
I
Key control 1 input.
I
Key control 2 input.
I
Level meter signal input.
I
S.quality level input.
I
S.meter level input.
I
Connect to GND.
Woofer volume signal output.
O
Dot contrast signal input.
O
Power supply terminal.
J-BUS data I/O terminal.
J-BUS data output.
O
J-BUS serial clock signal I/O.
Initial setting.
I
Data output for LCD driver.
O
Clock otput for LCD driver.
O
Chip enable 1 output for LCD driver.
O
BUZZER control signal output.
O
Data input terminal from EEPROM.
I
Data output terminal from EEPROM.
O
Data input terminal from EEPROM.
J-BUS I/O signal terminal.
Tray motor negative signal output.
O
Tray motor positive signal output.
O
1-22
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