Kenwood RXD-M52-L Service Manual page 11

A B
(X28-3050-10)
MECHANISM ASS'Y D40-1673-05
R/P/E HEAD (PCB)
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
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
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)
+B B LINE
Q4-6,8,10,18 : DTC124EUA or
UN5212
Q7,9 : 2SA1286-T11
Q11 : 2SC4081(R,S) or
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
12
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
(refer to parts list). indicates safety critical components.
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
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
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
The DC voltage is an actual reading measured with a
high impedance type voltmeter. The measurement value
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
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)
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