Kenwood RXD-M52-L Service Manual page 11

A B
(X28-3050-10)
MECHANISM ASS'Y D40-1673-05
R/P/E HEAD (PCB)
Q Q
3 7 6 3 1 5 1 5 0
CN5
L-PLAY
6 7
Lch
1 L-REC
5 6
GND
5
R/P HEAD
R-REC
4 4
R-PLAY
Rch
3 3
GND
2 2
ERASE
ERASE
HEAD 1 1
IC3
E3
REC SW
2
P/B SW
CONT
P/B SW
REC SW
3
LOADING
IN : 5.3V
4.6V
CN3
MOTOR(CCW)
5 5
T E
L 1 3 9 4 2 2 9 6 5 1 3
LOADING
MOTOR(CW)
MOTOR
4 4
4
4.9V
GND
3 3
2
R84 10K
CLOSE SW
OPEN SW
2 2 4
OPEN SW R85 10K
CLOSE SW
1 1 5
REC-F CN4 R80 10K
F REC SW
13 13 7
R86 22K
PHOTO
CAPSTAN 12 12
MOTOR
5
SOL(12V)
11 11 +12V
HALF
R81 10K
PACK SW
10 10 8
GND
9 9
CPM(12V)
8 8 +12V
NC
7 7
NC
6 6
COM(GND)
5 5
MODE SW R82 10K
PLAY SW
4 4 9
R83 10K
CrO2
CrO2 SW
3 3 10
NC
REC-R R88 10K
2 2
R REC SW
SENSOR
6 1 1 11
SOLENOID
IC1 : HA12219NT
w w w
IC2 : HA12136A
IC3 : BA3126N
IC4 : NJU3713D
IC5 : TA8409S
D1,5 : UDZ5.6B
D2 : MA111
D3,4 : 1SS133 or
HSS104A
7
C D
L2
10mH
R42 C38
15K 10u16
C40
220P +
L1
10mH
R41 C37
15K 10u16
C39
PLAY/REC
+
220P
C34
HEAD
100u16
SW
9
+
8
G R43
11.9V
7 5.7V
10 R36
6 1/4W 10
VCC +12V +12V +12V
1/4W
5
GND
REC : 11.9V
12.0V
PLAY : 6.0V
Q17
4
+12V
3 5.7V
D1
2
R/P
G
C33
SW
1
330u10
REC : 0V
PLAY : 11.9V
BAIS BIAS
(R) (L)
Q18
REC : 4.7V
PLAY : 0V
5
IC5
LOADING
OUT : 5.3V
MOTOR
CONTROLLER
4.6V
7.1V
C57
0.01 +12V
+12V
3
+7V
4.9V
+5V +5V
12.1V
6
REC : 6.7V
Q11
SOLENOID
DRIVER
Q9
+12V +12V
12.0V R78
CAPSTAN
C43
47K L5
DRIVER 6800P 4 3
11.4V
5 2
Q7
5 BIAS
+12V +12V 6 1
3
R77
47K
Q8 Q10
4.9V
8
Q1,2,12 : 2SC1740S(Q,R) or RECORDING LINE
2SC2458(Y,GR)
SIGNAL LINE
Q3 : 2SC3940A(R,S) or
GND LINE
2SD863(F,E)
x a o +B B LINE
Q4-6,8,10,18 : DTC124EUA or
UN5212
Q7,9 : 2SA1286-T11
Q11 : 2SC4081(R,S) or
. i
2SC4116(Y,GR)
Q17 : DTA124EUA or
UN5112
E F
C32
47P
C31
47P
IC1
11.8V
C29
2.2u50
1 22 5.6V
+12V VCC RIN-L
+
2
ROUT-R
5.7V
IC1
P.B REC
EQ
C30
21 5.6V 2.2u50
5.7V 3
ROUT-L RIN-R
+
Nor : 0V
CrO2 : 4.9V
20
B-1/2 14
PLAY : 0V
REC : 4.8V
19
A/B 15
18
A-N/C 17
5.7V 4
C18
REC-RET
22u16
5.7V
5
+
B-IN-L
Nor : 0V
5.7V 6
CrO2 : 4.9V
B-IN-R
5.7V 7
VREF
R32
1K
5.7V 8
5.7V
A-IN-R
R17
+
R31
17 270
1K 5.7V 9 PNF-L
A-IN-L
PB LEVEL
R21
R33
20K
16
22K
1.3V 10 PEQ-L
IREF
C21 R15
11
GND 15 4.7u50 1.5K
OUT-L
+
PLAY
: 8.7V
REC
: 5.8V
C22 R16
14 4.7u50 1.5K
OUT-R
+
R22
20K
13
PEQ-R
Q Q
12 3 7
PNF-R
5.7V
+12V
12.0V
BIAS
R51 AVR
REC : 7.0V REC : 11.9V
10 C50
Q3
1/4W 0.22
BIAS BIAS +12V +12V
7.7V
BIAS
OSC
R49
Q1
27K
C46
C44
D2
10u16
5600P
+
C47 Nor : 0V
CrO2 : 11.4V
5600P
R50 Q4 Q5 Q6
Q2
27K
Nor : 4.7V
CrO2 : 0V
CAUTION: For continued safety, replace safety critical
components only with manufacturer's recommended parts
u 1 6 3
(refer to parts list). indicates safety critical components.
y
For continued protection against risk of fire, replace only
with same type and rating fuse(s). To reduce the risk of
electric shock, leakage-current or resistance measure-
ments shall be carried out (exposed parts are acceptably
insulated from the supply circuit) before the appliance is
returned to the customer.
G H
2 4
8 9
R25 C25
7.5K 10u35
+
C4
4.7u50
R26 C26
7.5K 10u35 +
L4
+ C12
5.8V 2.2u50 6
+
IC2
4
DOLBY B TYPE
NR SYSTEM PLAY
:0V
REC
: 4.7V 5.7V
1
4
5.8V
6
IC2
L3
Lch
C9
C3
4.7u35
4.7u50
+
+
5.8V
11.9V
C10
4.7u35
+
C11
2.2u50
Rch
+
R12 10 1/4W
+12V +12V
6 3 1 5 1 5 0 8
2
+12V +12V
+12V
+7V
+5V +5V
PLAY : 0V IC4
4.9V
REC : 4.9V
Nor : 0V
18
R93 1K VDD +5V
1 CrO2 : 4.9V
1 REC/PLAY
17 R91 1K
REC EQ.
R92 1K 2
2 DOLBY
PLAY : 0V 16 R70 3.9K
3 A/B1
Nor : 4.9V REC : 4.9V
BEAT
R60 9.1K
CrO2 : 0V 15
A/B2
1
14 R90 1K
R96 1K 4
PLAY EQ.
4 BIAS2
5 R57 10K
13
VSS
CLR
R97 1K
6
4.9V
6 BIAS1
7
PLAY : 0V MUTE C60 220P
REC : 4.9V
R98 100
12
STB
PLAY/REC
C55 220P
: 4.9V
11 R69 100
8
CLK
8 CPM
REC : 4.7V
C54 220P
9
9 SOL
10 R68 100
EXPANDER IC DATA
m
The DC voltage is an actual reading measured with a
high impedance type voltmeter. The measurement value
c o
may vary depending on the measuring instruments used
or on the product. Refer to the voltage during RECORD-
ABLE MD PLAY unless otherwise specified; The value
.
shown in ( ) is the voltage measured at the moment of
STOP. The voltage followed by (REC) refers to the value
during MD RECORDING.
Y39-3560-10
I J
2
9 8 9 9
5
REC-R
4
PLAY-R
3
GND TEST PIN
2
REC-L
1
PLAY-L
R2 E1
100
13 PLAY Rch
1
C14
2
R6 C16
6800P 27K 10u16
3
12 REC Rch
+
11 GND(ANALOG)
R5 C15
3 27K 10u16
10 REC Lch
+
C13
2
6800P
1
X29-
CN8
2/3
B
R1
100
9 PLAY Lch
12.0V
+12V 8 +12V(ANALOG)
9 2 4 9 8 2 9 9
7 GND(BIAS)
12.0V
+12V 6 +12V(BIAS)
5 GND(MECHA)
12.1V
+12V 4 +12V(MECHA)
3 GND(LOADING)
7.1V
+7V +7V 2 +7V(LOADING)_
1 NC
+5.0V AVR
Q12
+5V
5.6V
17
CN2
15
13 13 DATA
14
12 12 CLK
X29-
11 11 R-REC-SW
CN9
10 10 CrO2-SW
2/3
9 9 PLAY-SW
8 8 PACK-SW
WH1
1 C
7 7 F-REC-SW
6 6 PHOTO
5 5 CLOSE-SW
12
4 4 OPEN-SW
3 3 OPEN
2 2 CLOSE
13
1 1 STB
RXD-M52 (1/3)
RXD-M52