KENWOOD KMDPS971 Service Manual

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Service Manual for KENWOOD KMDPS971, downloadable as a PDF file.

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MD RECEIVER
KMD-PS971R/X92
SERVICE MANUAL
© 2000-7 PRINTED IN KOREA
B51-7652-00 (K) 3129
KMD-PS971R (E)
Refer to the service manual "X92-3390-00,0-01_X92-3560-00,X92-3580-00" (B51-7461-10)
for MECHANISM ASSY's information.
KMD-X92 (K)
The following reference numbers with accessory parts are the same reference numbers
used on EXPLODED VIEW and PARTS LIST.
KMD-X92
DISP
KMD-PS971R
DISP
261
292
291
267
215
222
221
797
296
201
DC1
272
216
RM1
224
266
265
225
40%
background image
MD RECEIVER
KMD-PS971R/X92
SERVICE MANUAL
© 2000-7 PRINTED IN KOREA
B51-7652-00 (K) 3129
KMD-PS971R (E)
Refer to the service manual "X92-3390-00,0-01_X92-3560-00,X92-3580-00" (B51-7461-10)
for MECHANISM ASSY's information.
KMD-X92 (K)
The following reference numbers with accessory parts are the same reference numbers
used on EXPLODED VIEW and PARTS LIST.
KMD-X92
DISP
KMD-PS971R
DISP
261
292
291
267
215
222
221
797
296
201
DC1
272
216
RM1
224
266
265
225
40%
background image
KMD-PS971R/X92
2
BLOCK
DIAGRAM
COM+B
FM+B
AM+B
EEPROM
DETECTION
PHONE
ACC
SRM
PHOTO
DETECTION
MOTOR
DRIVER
8V AVR
MD/SRM
CONVERTER
14V SW
5VSW
BU5V AVR
P CON.
SW
MUTE DRIVER
PRE OUT AMPLIFIER
AUDIO MUTE SW
SYSTEM E's
POWER IC
IC4
IC7
SYSTEM u-COM
MD
CH
Q30
IC15,16,18
IC5
IC2
TUNER
MECHA
DETECTION
ELECTRIC VOLUME/
PRE OUT
SP-OUT
ILLUMINAITION
ACC
P-ANT
P-CON
BACK UP
DECODER
RDS
IC17
IC11
EXT. CONT
REGULATOR
DC/DC
BOX
PANEL u-COM
RESET SW
RESET
VFD
REMO
G/R SW
SPE-ANA
IC6
DETECTION
IC19
NOISE
SPECTRUM ANALYZER
& AGC AMPLIFIER
CONTROL
EXTERNAL
DC/DC
IC3
IC14
DC/DC
REG
MATRIX
KEY
LOCK SW
PANEL
BPF
A1
UNIT
L5,Q48-51
CN5
CN4
AMPLIFIER
NOISE CANCELER/
MULTIPLEXER
HPF&LPF SW
Q34-37,53,54
CN1
AUDIO
PANEL SW
Q59
PH1
CN7
IC9
SWITCH
IC20
Q5,6
P.ON
Q3
Q1,2
SW
Q23-26
Q21,22
P-ANT.
B.U.
Q28
DETECTION
Q29
D6
DIMMER
Q12
AMPLIFIER
Q58
PHONE
J1
PLL CLK
CH
SERVO
LOE-SW
LOS-SW
M RST
M SDA
EJECT
EJE-SW
M STOP
A MUTE
M SCL
A8V
BU5V
RST
REQ C
CLK
CH-CON
DATA H
REQ H
MD
AM
FM
MUTE
MC
REQ
P
ANEL
RST
SC
REQ
MC
CLK
SC
DA
T
A
RESET
SRM
SW1
SRM
DET
SRM
SW2
RDCK
RDDA
QUAL
SDA
SCL
A8V
+B
-B
+B
-B
PLL DATA
PLL CE
S-METER
SW5V
SW5V
DATA C
BACK UP
FAC
FL+B
750mV
4500mV
CH
AM
2250mV
FM
160mV
1200mV
1200mV
213mV (KMD-PS971R)
400mV (KMD-X92)
RDS OUT
FM+B
NOISE
4500mV
MD
KMD-X92
MODE
4500mV
4500mV
1069mV
1715mV
KMD-PS971R
SRM
SUB-
SRM
SUB+
DRIVER
MUTE
BU5V
LOAD
BU 5V
PANEL 5V
MD+B MD/SRM
P MUTE
PRE MUTE
KMD-PS971R/X92 (E/K)
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KMD-PS971R/X92
3
COMPONENT DESCRIPTION
ELECTRIC UNIT (X25-848x-xx)
REF.
FUNCTION
OPERATION
No.
Q1
CONTROL SW BETWEEN ED1 to IC1
Works when Q5's base level comes "H".
Q2
REMOTE CONTROLLER POWER SW
Works when the base level comes "L" during power on.
Q3
BRIGHTNESS CONTROL
Adjusts brightness with pulse width.
Q5
CONTROL SW BETWEEN ED1 to IC1
Works when the base level comes "H".
Q6,7
ILLUMINATION SW
Make illumination-on when the base levels comes "H".
Q8
CONTROL SW BETWEEN ED1 to IC1
Works when Q5's base level comes "H".
REF.
FUNCTION
OPERATION
No.
Q3
5V SW
Works when the base level comes "L".
Q4
AUDIO 8V AVR
Works when Q56's base level comes "H".
Q5,6
P.ON 14V SW
Work when the base levels come "H".
Q8-11
ILLUMINATION SW
Works when Q9's base level comes "H".
Q12
DIMMER DETECTION
Works when the base level comes "H" during illumination comes on.
Q13,14 DC/DC CONVERTER +B SW
Work when Q14's base level comes "H".
Q21,22 P-ANT. SW
Work when Q22's base level "H" during FM or AM signal is received.
Q23
P-CON. SW
Works when Q26's base level comes "H".
Q24,25 P-CON. SW PROTECTION
Work when the P-CON. output volume level comes down.
Q26
P-CON. SW
Works when the base level comes "H".
Q28
BACK-UP DETECTION
Works when the momentary power down is detected.
Q29
ACC DETECTION
Works when ACC is turned off.
Q30
AUDIO MUTE DRIVER
Makes mute turns on when the base level comes "L".
Q32
SPECTRUM ANALYZER AGC
Controls spectrum analyzer level.
Q33
E-VOL. MUTE SW
Makes mute turns on when the base level comes "H".
Q34-37 AUDIO MUTE SW
Makes mute turns on when the base level comes "H".
Q38
SVR SW
Works when momentary power down is detected.
Q43,44 NOISE DETECTION TIME CONSTANT SW
Q43's base comes "L" during searching, and comes
"H" during tuner signal is received.
Q45
K2I WIDE/NARROW SW
Makes mode to the forced wide when the base level comes "H".
Q48,49 AM +B SW
Works during AM signal is received.
Q50,51 FM +B SW
Works during FM signal is received.
Q52
VOLTAGE SW
Works when MD plays.
Q53,54 AUDIO MUTE SW
Makes mute turns on when the base level comes "H".
Q56,57 AUDIO 8V AVR
Work when Q56's base level comes "H".
Q58
EXTERNAL AMPLIFIER CONTROL SW
Works when the base level comes "L".
Q59
PANEL SW
Works when the base level comes "L".
SWITCH UNIT (X13-9710-10)
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KMD-PS971R/X92
4
MICROCOMPUTER'S TERMINAL DESCRIPTION
PORT
PORT NAME
I/O
FUNCTION
OPERATING CONDITION
No.
1
CH CON
O
Changer control.
-
2
CH MUTE
I
Mute from the changer.
-
3
REQ H
O
Hand shaking request to the changer.
-
4
ILL ON
O
Illumination.
-
5
MD/SRM
O
MD or SRM.
-
6
PACK DET
I
Disc detection.
-
7
LOS SW1
I
Loading SW detection.
"L" : Loading starts.
8
MD+B
O
Power supply for MD.
"H" : SRM mechanism runs in MD mode.
9
VDD
-
Power supply.
-
10
X2
-
Main clock.
-
11
X1
-
Main clock.
-
12
VSS
-
GND.
-
13
XT2
-
Sub clock.
-
14
XT1
-
Sub clock.
-
15
RESET
I
Reset.
"L" (3V) : Reset.
16
CH RST
O
Reset to the changer.
-
17
R CLK
I
RDS clock.
-
18
REQ C
I
Hand shaking request from the changer.
-
19-21
N.C.
-
No connection.
-
22
SC REQ
O
Request from panel
µ-com.
-
23
AVDD
-
Analogue power supply.
-
24
AVREF 0
-
Reference voltage.
-
25
PHONE(E)
I
Phone detection.
Less than 1V : Tel mute.
More than 2.5V : Navigation mute.
26
SRM SW1
I
SRM positioning detection.
-
27
NOISE(E)
I
FM noise detection.
-
28
S METER
I
FM S-meter detection.
-
29
IF MODE
I
K2I IF detection.
"H" : Wide.
"L" : Narrow.
30
N.C.
-
GND.
-
31
M MUTE R
I
Rch mute request from MD mechanism.
-
32
M MUTE L
I
Lch mute request from MD mechanism.
-
33
AVSS
-
Analogue GND.
-
34
EX. AMP
O
External amplifier control.
-
35
M RST
O
Reset to MD mechanism.
-
36
AVREF 1
-
Reference voltage.
-
37
DATA C
I
Data line from the changer.
-
38
DATA H
O
Data line to the changer.
-
39
CH CLK
I/O
Clock line to the changer.
-
40
SC DATA
I/O
Data line from
µ-com.
-
41
MC DATA
I/O
Data line to
µ-com.
-
42
MC CLK
I/O
Clock to panel
µ-com.
-
43
M STOP
O
Stop request to MD mechanism.
-
44
BEEP
O
Beep.
-
45
PLL CE
O
Chip enable to PLL.
-
46
PLL DATA
O
Data line to PLL.
-
47
PLL CLK
O
Clock to PLL.
-
48
LOE SW
I
Down SW detection.
"H" : Chucking.
49
EJECT
O
SW for MD mechanism and MD eject.
-
50
LOAD
O
MD loading.
-
(X25-) IC1 :
µ-COM
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KMD-PS971R/X92
5
MICROCOMPUTER'S TERMINAL DESCRIPTION
PORT
PORT NAME
I/O
FUNCTION
OPERATING CONDITION
No.
51
N.C.
-
No connection.
-
52
PAN 5V
O
Panel ON/OFF.
-
53
MC REQ
I/O
Lock SW.
-
54
P RST
O
Panel
µ-com reset.
-
55
N.C.
-
No connection.
-
56
QUAL
I
RDS receiving.
-
57
R DATA
I
RDS data.
-
58
SRM SUB-
O
SRM mechanism sub motor.
-
59
SRM SUB+
O
SRM mechanism sub motor.
-
60
SRM DET
I
SRM mechanism detection.
-
61
SRM SW2
I
SRM eject positioning detection.
-
62
FM SD
I
FM SD.
-
63
N.C.
-
No connection.
-
64
AFC
O
Noise detection time constant SW.
"H" : Receiving.
"L" : FM/AM seeking or AF searching.
65
N.C.
-
No connection.
-
66
WIDE
O
K2I forced wide.
-
67
NARROW
I/O
K2I forced narrow.
-
68
AM+B
O
AM power supply.
-
69
FM+B
O
FM power supply.
-
70,71
N.C.
-
No connection.
-
72
VSS
-
GND.
-
73
TYPE 0
I
Destination SW.
-
74
TYPE 1
I
Destination SW.
-
75
TYPE 2
I
Destination SW.
-
76
ST TYPE 0
I
Destination SW.
-
77
ST TYPE 1
I
Destination SW.
-
78
N.C.
-
No connection.
-
79
PRE MUTE
O
Pre mute.
"L" : Momentary power down.
80
N.C.
-
No connection.
-
81
VDD
-
Back-up 5V.
-
82
N.C.
-
No connection.
-
83
SVR
O
SVR.
"H" : Momentary power down or power off.
84
N.C.
-
No connection.
-
85
P MUTE
O
Power IC mute.
-
86
ANT CON
O
Antenna control.
"H" : Tuner or TI.
"L" : Other modes.
87
IC2 SCK
O
IC2, IC5 and EEPROM clock line.
-
88
DIMMER
I
"SMALL" detection.
-
89
P-ON
O
Power control.
-
90
ACC DET
I
ACC detection.
-
91
N.C.
-
No connection.
-
92
P.ON
O
Power supply for circumference of
µ-com.
-
93
B.U. DET
I
Momentary power down detection.
-
94
TEST
-
Test.
-
95
IC2 SDA
I/O
IC2, IC5 and EEPROM clock line.
-
96
MUTE
O
Mute.
-
97
SW5
O
5V power supply.
-
98
MS CL
O
Clock line to MD mechanism.
-
99
MS DA
I/O
Data line to MD mechanism.
-
100
N.C.
-
No connection.
-
(X25-) IC1 :
µ-COM

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