Yamaha KX-E100, Service Manual

Page: 19 / 27

A
1
2
3
4
5
6
7
8
9
10
11
B C D E F G H I J K L M N
KX-E100
BCE
B
C
E
PIN CONNECTION DIAGRAM OF TRANSISTORS, DIODES AND ICS.
2SD2394 2SB1237
2SD1858
DTC114ES
DTC144ES
2SC1740S
2SD1915F
2SA933S
DTC143XS
2SB1237 µPC1330HA All diodes
Anode
Cathode
1
9
BA6138
1
9
LB1641 CXA1560S NJM7812FA
AN78N05
M38B57M6-135FP
1
10
E
C B
NJM2043L-D
1
8
OUT
COM
IN E C
B
1
11
22
CXA1597P
1 24
25
40
41 64
65
80
1
8
16
IC103 : NJM7812FA
IC104 : NJM78N05
Voltage Regulator
IC101 : LB1641
Motor Driver
IC102 : BA6138
1/2 Power Compressor Amp.
IC201 : uPC1330HA
2 ch Head Selector
IC202 : NJM2043L-D
OP Amp.
IC203 : CXA1560S
Dolby B-C NR
IC204 : CXA1597P
Recording Equalizer
INPUT
OUTPUT
COMMON
2 3
P1
5 IN 1
1 GND
4
VZ
6
IN 2
OUT
1
8
VCC 2
10
OUT
2
9
P2
INPUT LOGIC
PRE DRIVER
7
VCC 1 9
4
3 2 1 8 7 5
6
Vreg
COMP COMP
AMP AMP OUT OUT
MUT
Vcc
DET1 DET2 GND
IN2
OUT1 OUT2 MUT
IN1
INVERTER
COMPARATOR
1
SWR 1
2
GND
3
SWP
1
4
CONT
5
GND
6
VCC
9
SWR 2
8
GND
7
SWP
2
–IN
1
2
+IN
1
3
–V
CC
4
+IN
2
5
–IN
2
6
OUT
2
7
+V
CC
8
OUT
1
1
–
+
–
+
22 21 20 19 18 17 16 15 14 13 12
1 2 3 4 5 6 7 8 9 10 11
IREF
MOA
MOA
SSK
SSK
HLS
HLS
HDET LDET
LDET HDET
LLS
LLS
REC AMP
REC AMP
Mode
Control
Vcc
V
EE
VCT PBIN1 LINEIN1 MPXIN1 MPXOUT1 LINEOUT1 TCH1 TCL1 RECOUT1 MODE VCC
IREF
PBIN2
LINEIN2 MPXIN2
MPXOUT2 LINEOUT2
TCH2
TCL2
RECOUT2
NRSW
VEE
CONTROL
VG
BIAS
REC EQ1
REC EQ2
Gp CAL REC MUTE REC CAL REC IN2 IREF BOOST2 VCC REC OUT2
SPEED
TAPE EQ
DGND
REC IN1
GND
BOOST1
VEE
REC OUT1
16
1
15
2
14
3
13
4
12
5
11
6
10
7
9
8
Point 1 (Both end of C105) REC mode
V : 20V/div
H : 5 µsec/div
DC range
10 : 1 probe
Point 2 (CH1 : Pin 10 of IC205, CH2 : OUT of IC103)
V : CH1=2V/div
CH2=5V/div
H : 0.5 sec/div
DC range
1 : 1 probe
Point 3 (Pin 15 of IC205)
V : 2V/div
H : 0.1 µsec/div
DC range
1 : 1 probe
CH 1
0V
0V
CH 2
AC Power ON AC Power OFF
H All voltage are measured with a 10M W /V DC electric volt meter.
H Components having special characteristics are marked s and must be replaced
with parts having specifications equal to those originally installed.
H Schematic diagram is subject to change without notice.
E-22/J-20
SCHEMATIC DIAGRAM
The voltages are measured using normal tape in the
PLAY mode (no-signal condition).
Only the voltage in ( ) are in the REC mode.
0(0)
0 2.6
2.1
4.7
4.7
4.8
-0.1
-0.1
4.7
(4.7)
4.2(4.2)
4.2(4.2)
0(0)
-0.1
0
0
0
4.8
0
0
0
0
4.6
0
0 0
0
~
0(4.7) 4.8
0 0 0 0 0 0
4.7 2.2 2.0 ~ ~ 2.0 2.0
~ ~ ~ ~ ~ ~ ~
0
-16.3 -16.3 -16.3 -16.3 ~ ~ ~ -19.3 -19.3 -19.3 -19.3 -19.3 -19.3 -19.3 ~ ~ ~ ~ ~ ~ ~ ~
0 0 0 0 0 0 0
0 4.7 0 4.6(4.7) 1.7(1.6) 0 4.7 4.8
4.8
0
0
-22.2
4.5
~
~
~
-19.3
-19.3
-19.3
-19.3
-19.3
-19.3
-19.3
~
0(0)
0(0)
4.6(4.7)
0
(0)
0(0)
0(0) 0(0)
0(0)
0(0)
0(0)
0(0)
0(0)
4.2
(4.2)
~(~)
~(~)
12.0(12.0)
12.0(12.0)
12.0(12.0)
12.1(12.1)
12.1(12.1)
11.3(11.3)
0(0) 0(0) 0(0)
0(4.7)
0(0)
8.6(4.9)
0(0) 0(0) 0(0)
4.4(5.1)
4.4(5.1)
4.4(5.1)
0(0)
0(0)
0(0)
0(0)
4.2
(4.2)
4.2
(4.2)
4.4
(5.1)
4.4(5.1)
4.5(5.1)
8.6(9.9)
6.0 (6.0)
1.2 (1.2)
6.0 (6.0)
6.0 (6.0) 6.0 (6.0)
6.0(6.0) 6.0(6.0) 6.0(5.9)
0.3 (0.3)
6.0 (6.0)
6.1(6.0)
0 (0)
~(~)
6.0 (5.9) 6.0(6.0) 6.0(6.0)
6.0 (6.0)
0(10.1) 12.1(12.1)
6.0(5.9) ~(~)
0.3 (0.4)
0(10.1)
0(10.1)
4.8(0)
0(0)
0(0)
0(0)
0(0)
0(2.4)
0(0)
6.0(6.0)
6.0(6.0)
6.0(6.0)
0(0)
6.0(6.0)
3.5 (3.5) 0(4.7) 2.3(2.3) 6.0(6.0) 1.2(1.2) 6.0(6.0)
12.1(12.1)
6.0(6.0)
2.3
(2.3)
0(0)
0(0)
0(0)
0(0)
4.6(4.6)
4.8(0)
0(4.7)
4.8 (4.8)
4.7
(4.7)
4.3(4.3)
4.8(4.8)
4.7(4.7)
5.5(5.5)
5.5(5.5)
0(6.0)
0(0)
0(7.8)
0(7.8)
0(0.1)
0(0.1)
0
(0.1)
0 (0.1)
4.7(4.7)
0(0)
0(0)
0(0)
0(0)
0(0)
0(0)
0(0)
0(4.6)
0(0)
9.9(0)
0 (3.9) 0
(3.9)
0(3.3)
0(8.5)
0(8.5)
19.4(19.1)
~(~) ~(~)
2.0(2.0)
0(0)
0(0)
0.5(0.5) 0.7(0.7)
0.4 (0.6)
0(0)
0(0)
0(0)
12.1 (12.1)
0.7 (0.7) 0.5 (0.5)
2.0(2.0)
~(~) ~(~) 11.4
(1
1.3)
4.2
(4.2)
3.7
(3.7)
0(0)
0(0)
0(0)
0(0)
-0.1
(0)
0(0)
0(0)
0(0)
0(0)
7.0
(7.1)
12.6
(12.6)
12.6
(12.6)
12.1(12.1)
12.1(12.1) 19.4(19.2)
19.4(19.2)
19.4
(19.1)
19.4
(19.1)
19.4
(19.1)
19.4(19.1)
1.6(1.6)
AC3.2
AC24.7
AC16.9
19.4
(19.1)
5.5(5.5)
0.6(0.6)
19.2(19.0)
4.2(4.2)
3.5(3.5)
-15.7
-16.8(-16.8)
-22.2
(-22.2)
-22.8
(-22.8)
0(0)
0(0)
0(0)
0(0)
0(0)
0.5(0)
0.5(0)
-28.7
(-28.5)
-28.8
(-28.6)
-15.7
-16.3
-16.3
-16.3
- 16.3
TAPE SPEED ADJ.
PLAYBACK
LEVEL ADJ. (R ch)
PLAYBACK (L ch)
PLAYBACK LEVEL
ADJ. (L ch)
RECORDING LEVEL & BIAS ADJ. (L ch)
RECORDING
LEVEL & BIAS
ADJ. (R ch)
RECORDING LEVEL & BIAS ADJ. (L ch)
RECORDING LEVEL & BIAS ADJ. (R ch)
RECORDING (R ch)
3
2
1
2
M
8
M
7
M
9
D
7
D
2
D
8
1
2
3
4
5
6
7
8
9
10
11
12
13
1. R •
REC
2. METAL
3. F
•
REC
4. CASS IN
5. C
r O 2
6. +SOL
7. SENSOR OUT
8. +5V SENSOR
9. PLAY SW
10. +MTR
11. –COM
12. MTR SPEED B
13. MTR SPEED A
MAIN PCB
–
+
B
A
MABUCHI
MTR
MECHA CHASSIS PH TYPE (JST)
SOL
1
2
3
4
5 1. LOAD OUT (+)
2. LOAD IN (+)
3. LOAD OUT
4. COM
5. LOAD IN
LOADING PCB
PH TYPE (JST)
MTR
+
1. Lch
R / P HD
PH CONNECTOR
–
+
–
+
L
R
E HD
+
2. Lch –
3. Rch –
4. Rch +
5. E
–
6. E
+
CASSETTE MECHANISM
REC/PB CONTROL
PB AMP.
DOLBY B-C NR
REC AMP.
BIAS OSC
BIAS ON/OFF
METER
DRIVER
POWER SUPPLY
LOADING CONTROL
OPERATION SW
FL DISPLAY
SYSTEM CONTROL
M38B57M6-135FP
LOADING PCB
MAIN PCB
CB2
CB3
CB2
CB1
CB3
CB1