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A
B
C
SCHEMATIC DIAGRAM
1
The voltages are measured using normal tape in the
PLAY mode (no-signal condition).
Only the voltage in (
) are in the REC mode.
2
3
2
4.6(4.7)
0(0)
0(0)
4
0(0)
3
0
0
0
-22.2
4.5
~
~
~
M38B57M6-135FP
-19.3
-19.3
-19.3
-19.3
SYSTEM CONTROL
5
-19.3
-19.3
-19.3
~
6
7
FL DISPLAY
8
OPERATION SW
9
10
PIN CONNECTION DIAGRAM OF TRANSISTORS, DIODES AND ICS.
2SB1237
DTC114ES
2SB1237
2SD2394
All diodes
DTC144ES
2SD1858
2SC1740S
2SD1915F
2SA933S
DTC143XS
B
E
B
B C
C
C B
C
Cathode
E
E
E
11
D
E
F
REC/PB CONTROL
PLAYBACK (L ch)
CB1
M
7
4.2(4.2)
4.2(4.2)
4.7
0(0)
(4.7)
-0.1
2.6
4.8
-0.1
2.1
4.7
4.7
0
0
-0.1
0
4.8
0
0
0
0
4.6
0
~
0
0
0
M
8
CB2
0
12.1(12.1)
(0)
12.0(12.0)
12.0(12.0)
0(0)
0(0)
0(0)
0(0)
~(~)
M
~(~)
9
0(0)
12.1(12.1)
12.0(12.0)
0(0)
11.3(11.3)
4.2
CB3
(4.2)
0(0)
0(0)
TAPE SPEED ADJ.
Point 1 (Both end of C105) REC mode
Point 2 (CH1 : Pin 10 of IC205, CH2 : OUT of IC103)
V : 20V/div
V : CH1=2V/div
H : 5 µsec/div
CH2=5V/div
DC range
H : 0.5 sec/div
0V
10 : 1 probe
DC range
1 : 1 probe
LB1641
BA6138
NJM7812FA
µPC1330HA
AN78N05
Anode
10
9
9
IN
1
OUT
1
1
COM
G
H
PLAYBACK LEVEL
ADJ. (L ch)
8.6(9.9)
4.4(5.1)
4.4(5.1)
4.5(5.1)
0(0)
4.2
(4.2)
PB AMP.
0(0)
0(0)
4.2
(4.2)
0(0)
4.4
(5.1)
4.4(5.1)
4.4(5.1)
PLAYBACK
LEVEL ADJ. (R ch)
DOLBY B-C NR
4.8(4.8)
5.5(5.5)
4.7(4.7)
RECORDING LEVEL & BIAS ADJ. (L ch)
RECORDING LEVEL & BIAS ADJ. (R ch)
BIAS OSC
0(7.8)
0(0.1)
0(0.1)
0 (0.1)
1
0
0(7.8)
(0.1)
19.4(19.1)
0(8.5)
0(8.5)
0(0)
0(0)
0 (3.9)
0
(3.9)
4.7(4.7)
0(0)
9.9(0)
0(4.6)
0(3.3)
0(0)
0(0)
0(0)
0(0)
0(0)
BIAS ON/OFF
METER
DRIVER
19.2(19.0)
12.1(12.1)
LOADING CONTROL
12.6
(12.6)
3.7
19.4
(3.7)
12.6
(19.1)
4.2
(4.2)
0(0)
(12.6)
19.4
2
-0.1
(19.1)
0(0)
(0)
0(0)
0(0)
5.5(5.5)
12.1(12.1)
0(0)
0.6(0.6)
0(0)
POWER SUPPLY
Point 3 (Pin 15 of IC205)
V : 2V/div
H : 0.1 µsec/div
CH 1
DC range
1 : 1 probe
CH 2
AC Power ON
AC Power OFF
NJM2043L-D
CXA1560S
CXA1597P
M38B57M6-135FP
64
41
65
40
H All voltage are measured with a 10MW/V DC electric volt meter.
8
8
11
H Components having special characteristics are marked s and must be replaced
22
16
80
25
with parts having specifications equal to those originally installed.
1
1
1
1
24
H Schematic diagram is subject to change without notice.
I
J
K
0(10.1)
RECORDING LEVEL & BIAS ADJ. (L ch)
4.8(0)
0(0)
0(10.1)
0(0)
REC AMP.
2.3
0(0)
(2.3)
0(0)
0(6.0)
0(0)
0(0)
0(0)
4.6(4.6)
4.8(0)
4.3(4.3)
RECORDING
0(4.7)
0(0)
LEVEL & BIAS
4.7
ADJ. (R ch)
(4.7)
4.8 (4.8)
5.5(5.5)
RECORDING (R ch)
0.5(0)
0(0)
0(0)
0.5(0)
0(0)
0(0)
-15.7
-16.8(-16.8)
-16.3
-16.3
-22.2
-28.7
-28.8
(-22.2)
(-28.5)
(-28.6)
- 16.3
-16.3
-22.8
(-22.8)
-15.7
0(0)
3.5(3.5)
4.2(4.2)
19.4(19.1)
19.4
1.6(1.6)
(19.1)
AC3.2
19.4
7.0
0(0)
(19.1)
(7.1)
19.4(19.2)
AC24.7
AC16.9
19.4(19.2)
0(0)
0V
L
M
N
KX-E100
IC101 : LB1641
IC102 : BA6138
Motor Driver
1/2 Power Compressor Amp.
Vcc
9
3
2
8
10
9
7
Vreg
COMP
COMP
MUT
IN1
4
6
IN2
AMP
OUT
OUT
AMP
VZ
4
3
2
1
8
7
5
DET1
OUT1
MUT
OUT2
DET2
GND
IN 1
5
INPUT LOGIC
IN 2
6
GND
1
IC103 : NJM7812FA
IC201 : uPC1330HA
IC104 : NJM78N05
2 ch Head Selector
Voltage Regulator
INVERTER
INPUT
COMPARATOR
1
2
3
4
5
6
7
8
9
OUTPUT
COMMON
IC202 : NJM2043L-D
OP Amp.
+
+
–
–
1
2
3
4
5
6
7
8
IC203 : CXA1560S
Dolby B-C NR
22
21
20
19
18
17
16
15
14
13
12
Vcc
SSK
REC AMP
MOA
HLS
HDET
LDET
LLS
Mode
Control
MOA
HLS
HDET
LDET
LLS
IREF
SSK
REC AMP
V
EE
1
2
3
4
5
6
7
8
9
10
11
IC204 : CXA1597P
Recording Equalizer
16
15
14
13
12
11
10
9
BIAS
REC EQ2
CONTROL
REC EQ1
VG
1
2
3
4
5
6
7
8
CASSETTE MECHANISM
CB1
+
1. Lch
+
L
2. Lch –
R / P HD
–
3. Rch –
R
D
4. Rch +
+
2
–
5. E
–
E HD
+
6. E
+
PH CONNECTOR
LOADING PCB
CB2
1. LOAD OUT (+)
1
MTR
2. LOAD IN (+)
2
D
3. LOAD OUT
3
7
4. COM
4
5. LOAD IN
5
PH TYPE (JST)
MAIN PCB
CB3
1. R
•
REC
1
2. METAL
2
3. F
•
REC
3
SOL
4. CASS IN
4
5. C
O
5
r
2
D
6. +SOL
6
8
7. SENSOR OUT
7
8. +5V SENSOR
8
9. PLAY SW
9
10. +MTR
10
11. –COM
11
–
+
MABUCHI
B
MTR
12. MTR SPEED B
12
A
13. MTR SPEED A
13
PH TYPE (JST)
MECHA CHASSIS
E-22/J-20
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