KENWOOD KTC-SR901 Service Manual

Cover page of KENWOOD KTC-SR901 Service Manual

Service Manual for KENWOOD KTC-SR901, downloadable as a PDF file.

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© 2002-3 PRINTED IN JAPAN
B51-7925-00 (N) 1474
SIRIUS SATELLITE RADIO TUNER
KTC-SR901
SERVICE MANUAL
Cord with plug
(E30-4138-05)
Metallic cabinet
(A01-2786-02)
Screw set
(N99-1623-05)
Accessory
(W01-0744-05)
Magic tape
(H30-0051-05)
Mounting hardware
(J21-3801-04)
background image
© 2002-3 PRINTED IN JAPAN
B51-7925-00 (N) 1474
SIRIUS SATELLITE RADIO TUNER
KTC-SR901
SERVICE MANUAL
Cord with plug
(E30-4138-05)
Metallic cabinet
(A01-2786-02)
Screw set
(N99-1623-05)
Accessory
(W01-0744-05)
Magic tape
(H30-0051-05)
Mounting hardware
(J21-3801-04)
background image
KTC-SR901
2
BLOCK DIAGRAM
60MHz
8.192MHz
DATA
AUDIO
ANTENNA DETECT
POWER SUPPLY BLOCK
F/E
A1
A/D
IC2
DD
IC3
(OPTION)
ANTENNA
COFDM
IC4
TDMRC
IC6
CDC
IC7
SDRAM
IC5
SRAM
IC8
IC9
DAP
SRAM
IC11
FLASH
IC10
ROM
A2
D/A
IC23
BUFFER
IC30
IC1
u-COM
SW.
IC24
IC25
ISO-
IC34
AMP
AMP
J2
J3
to H/U
to CD-CH
J1
Q2
Q10
IC15
IC12
IC16
Q3,IC13
Q12,IC17
Q13,IC18
IC22
IC35
IC19
IC14
AUDIO 8V
BIAS
DAC 5V
ADC 5V
ANTENNA 8V
DIG 3.3V
DIG 5V
F/E 3.3V
DIG 2.5V
B.U. 5V
DIG GND
ADC GND
DAC GND
AUDIO GND
RECEIVE SIGNAL
CLOCK
CONTROL
COMPONENTS DESCRIPTION
q electric unit (X14-6900-10)
Ref.No.
Element/Function
Operation/Condition
IC1
µ-com
IC2
AD converter
Analog to digital converter from A1 (tuner module)
IC3
Digital downconverter
Downconvert to baseband, de-mapping, timing correction
IC4
FFT, De-modulator
FFT, de-modulate, frequency correction for COFDM signal
IC5
128M SDRAM
For 4 seconds-delay
IC6
De-modulator, Combiner
De-modulate, correction for TDM signals, and combining of three signals
IC7
De-interleaver, Decoder
De-interleaver, viterbi/reed-solomon decode and channel selection
IC8
4M SRAM
For de-interleaver
IC9
Audio-decoder,
Audio decode, data decode and other agere's ic's system control,
System controller
and has a ESN code
IC10
16M Flash memory
Boot ROM for IC9 and has a ESN code
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KTC-SR901
3
COMPONENTS DESCRIPTION
Ref.No.
Element/Function
Operation/Condition
IC11
1M SRAM
External RAM for IC9
IC12
8V Regulator
Power supply for audio system
IC13
AVR
Power supply for antenna
IC14
3.3V Regulator
Power supply for A1 (tuner module)
IC15
5V Regulator
Power supply for D/A converter (IC23)
IC16
5V Regulator
Power supply for A/D converter (IC2)
IC17
DC/DC Converter
Power supply for digital 3.3V
IC18
DC/DC Converter
Power supply for digital 5V
IC19
2.5V Regulator
Power supply for digital 2.5V
IC22
Op-amp
Convert for audio bias circuit
IC23
D/A Converter
Audio D/A converter (I2S)
IC24
SW Op-amp
SW op-amp and LPF system for 2 audio signals
IC25
Op-amp
Audio isolate with CD-CH
IC30
3-state buffer
3.3V / 5V signal level converter
IC31
Reset ic
IC32
EEPROM
Memory
IC33
Comparator
For BU detect
IC34
Comparator
For antenna detect
IC35
5V Regulator
Power supply for BU 5V
Q1, 2
SW
For audio power supply SW
Q3
AVR
For antenna 8V power supply
Q10, 11
SW
For power supply SW
Q12
DC/DC Converter
For digital 3.3V power supply
Q13
DC/DC Converter
For digital 5V power supply
Q14
SW
For audio out source select
On ; CD-CH / Off ; Sirius
Q15
SW
For mute
On ; Mute
Q17
Mute
For left mute
Q18
Mute
Forright mute
Q19
Inverter
For reset
Q21
Inverter
For 5L ch-con signal
Q50
SW
For B.U detect
On ; Detect
Q51
SW
For B.U detect mute
On ; Mute
D1, 5
Diode
Protect for wrong connection
D10, 11
Schottky barrier diode
For DC/DC converter
D19
Diode
For reset
D20
Diode
For AVR
D21, 22
Diode
Protect for irregularly voltage input
D23
Diode
Divider for left and right mute circuit
D24, 25
OR gate
For mute
D30
Rectifier diode
For reset signal
D35, 36
Zenner diode
Protect for irregularly voltage input
D37
OR gate
For mute
D38
Diode
Divider for reset signal
D39-43
Zenner diode
Protect for irregularly voltage input
D44
Diode
Reference voltage for regulator
D45
Rectifier diode
For B.U 5V
D46
Diode
Protect for wrong connection
D47
Zenner diode
Reference voltage for mute circuit
D50, 51
Zenner diode
For B.U voltage detect
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KTC-SR901
4
MICROCOMPUTER'S TERMINAL DESCRIPTION
q X14-6900-10
Pin No.
I/O
Pin name
Description
Processing Operation
1
O
DATAH2
5L I/F to CD_CH
2
O
HCLK2
5L I/F to CD_CH
3-5
O
NC
Not connect
6
-
EVDD
Power supply for port
7
-
EVSS
Ground for port
8, 9
O
NC
Not connect
10
O
MUTE1
5L I/F to H/U
11
O
REQC1
5L I/F to H/U
12
I
MDI
Data input from IC9 (via IC30)
13
O
MDO
Data output to IC9 (via IC30)
14
O
SCK
Data clock output to IC9 (via IC30)
15
O
REQH2
5L I/F to CD_CH
16
O
CHCON2
5L I/F to CD_CH
17
O
A_MUTE
Audio mute output
H ; Normal (off) / L ; Mute on
18
I
IC/VPP
For write program enable
H ; Write mode / L ; Normal
19
O
RELAY
Audio source selection
H ; CD-CH / L ; Sirius
20
O
NC
Not connect
21
O
PON_M
Output for power on main
H ; Power on / L ; Power off
22
O
PON_A
Output for power on audio
H ; Power on / L ; Power off
23, 24
O
NC
Not connect
25
O
DAP_RST
IC9 reset output
H ; Normal (off) / L ; Reset
26
O
SSN
Enable signal output to IC9 (via IC30)
27-30
O
NC
Not connect
31
I
RESET
H ; Normal (off) / L ; Reset
32
I
NC
Not connect
33, 34
-
NC
Not connect
35
-
X2
Crystal for main clock
36
I
X1
Crystal for main clock
37
-
VSS
Ground
38
-
VDD
Power supply
39-54
O
NC
Not connect
55
-
BVDD
Power supply for BUS interface
56
-
BVSS
Ground for BUS interface
57-70
O
NC
Not connect
71
-
AVDD
Analog power supply
72
-
AVSS
Analog ground
73
I
AVREF
Analog reference voltage
74
I
ANTENNNA
Connected to antennna detection signal
H ; Normal (detect) / L ; Not detect
75
I
TA_MODE
Test mode
H ; Test mode / L ; Nomal mode
76-85
I
NC
Not connect
86
O
NC
Not connect
87
I
BUP
Back-up voltage detect
H ; Not detect / L ; Detect (normal)
88
I
REQH1
5L I/F from H/U
89
I
CHCON1/STBY
5L I/F from H/U
90
I
REQC2
5L I/F from CD_CH
91
O
NC
Not connect
92
I
SSR_BU
Back-up voltage detect
H ; Detect (normal) / L ; Not detect
93-96
O
NC
Not connect
97
I
DATAH1
5L I/F from H/U
98
O
DATAC1
5L I/F to H/U
99
I
HCLK1
5L I/F from H/U
100
I
DATAC2
5L I/F from CD_CH
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A
B
C
D
E
F
G
H
I
J
1
2
3
4
5
6
7
56
PC BOARD (COMPONENT SIDE VIEW)
PC BOARD (FOIL SIDE VIEW)
Refer to the schematic diagram for the values of resistors and capacitors.
C156
C165
C164
C169
C159
C143
C158
C151
C7
C6
C132
C149
C146
C223
C154
C225
C155
C286
C150
C142
C147
C284
C287
C4
R60
R10
R20
R16
R15
R24
R23
R22
R28
R27
C81 C82
C79
C80
C83
C87
C88
C85
C86
C78
C71
C72
C67
C70
C73
C76
C77
C74
C89
C99
C92
C93
C90
C91
C94
C97
C98
C96
C37
C38
C24
C36
C34
C27
C26
C29
C30
C60
C61
C58
C59
C62
C65
C66
C63
C64
C57
C50
C51
C52
1
C56
C53
C54
C10
C12
C9
C8
C21
C168
C23
C144
C148
C22
C153
L1
L2
C253
C256
C2
C194
C181
C197
C196
W1
R132
R133
R130
R121
L20
R125
C236
C237
C235
C239
R141
R140
R150
R151
R75
R76
R74
R72
R73
R82
R71
R46
R44
R45
R70
R96
R89
R90
R110
R34
R40
R30
R31
C102
C103
C100
C101
C104
C107
C108
C105
C106
C172
C174
C175
C177
C123
C119
C127
C128
C126
C124
C125
C112
C113
C111
C109
C110
C117
C116
L5
L4
L49
R209
R203
L50
X1
C171
C170
C173
CP7
R152
CP8
C214
R47
C184
C162
C224
R190
R189
C301
C40
C296
L12
L13
L51
C161
C167
C295
C238
R185
C240
R210
L45
L44
R204
R205
R206
R208
R207
R213
R212
R211
R218
R217
R216
R215
R214
14
85
1
13
13
12
12
9
9
5
5
1
1
8
8
4
4
25
51
75
50
26
76
100
1
25
51
75
76
100
50
26
1
36
73
108
109
144
37
72
50
51
75
76
100
1
12
11
1
17
25
26
1
44
132
89
133
176
45
88
100
1
25
26
50
51
75
76
1
44
132
89
133
176
45
88
IO
G
O
I
G
O
I
G
O
I
G
G
D
S
2
1
EB
E
B
EB
EB
SO
VPP
RST
MDI
DIS
RST
DAP
GND
4.2V
VDD
SSN
SCK
C226
L10
C140
L11
SI SCK GND
MDO
O
G
IE
B
2
C55
1
8
IC15
D46
D45
IC6
Q10
IC19
IC3
IC7
IC4
IC2
IC12
IC22
D37 D38
D23
D24
Q14
IC9
D41
D36
D35
D39
D1
D20
D21
D22
IC1
Q18
Q17
A2
D25
IC14
Q15
CN2
IC16
Q3
J1
CN4
FUSE 3A
BATT
GND
TERR
ANT
SAT
CN1
J3
J2
TO HEAD UNIT
TO CHANGER
X14-6900-10 (J74-1312-12)
A1
CN5
I
O G
S
D
G
G
G
S
S
D
D
S
D
G
G
D
S
EB
EB
S
G
D
EB
R62
R63
C35
C152
R54
R55
C145
C227
R160
R49
R187
R57
R58
C5
C228
R50
R51
R61
R52
R53
R5
R4
R2
R3
R17
R11
R1
R25
R21
C75
C95
C42
C43
C41
C32
C33
C31
C44
C45
C46
C11
C14
C16
C15
C13
C17
C20
C160
C157
C163
C166
C19
C18
C141
C130
C133
C182
C137
C136
C134
C135
C252
C251
C254
C257
C255
C250
C178
C288
C204
C205
L48
L46
L47
R129
R119
R122
L21
R124
L42
R120
L41
R177
R176
R179
R178
R175
R173
R172
R174/W5
R181
R180
R183
R182
R171
R139
R149
R170
R83
R84
R80
R81
R99
R100
R98
R97
R104
R105
R103
R101
R102
R95
R88
R87
R85
R86
R94
R92
R91
R43
R115
R116
R118
R117
R107
R106
R109
R37
R33
R41
R42
R38
R39
R32
R184
C185
C186
C189
C190
C187
C188
C180
C212
C213
C210
C217
C222
C220
C221
C195
C192
C193
C202
C203
C200
C201
C122
C121
C120
C118
C114
C115
CP1
C183
C199
C198
C216
C218
C230
C231
R186
C266
C269
C267
C268
C265
C263
C262
C261
C260
C264
C129
C139
C138
C176
R201
C300
R200
R56
C289
R191
W3
W4
R59
R188
C39
C297
C298
R202
R6
C207
C206
C209
C208
C241
C290
C291
C294
C293
C292
C131
L43
C191
OI
G
1
3
45
1
3
4
5
1
7
14
8
1
2
4
3
1
4
8
5
1
8
16
9
18
9
16
23
44
22
1
1
4
58
28
54
27
1
22
1
44
23
1
24
48
25
6
10
5
1
1
5
10
6
C211
+5V
FRAME
RST
MUTE
STBY
SDAT
SCLK
MCLK
LRCLK
Rch
AGND
BUSRST
RATE
UART
DGND
MDI
MDO
SSN
DIS
SCK
4.2V
DGND
DAPRST
Lch
D11
D10
Q13
D44
IC13
IC35
Q2
IC24
Q12
IC17
IC18
Q1
Q11
IC25
D30
Q21
Q19/D19
IC23
IC31
D42
D43
D40
IC32
IC30
IC34
IC33
IC10
IC11
D50
D51
Q50
D5
D47
Q51
IC5
IC8
X14-6900-10 (J74-1312-12)
Ref. No
address
Ref. No
address
IC1
2B
Q3
5D
IC2
3E
Q10
5B
IC3
2D
Q14
3B
IC4
2C
Q15
2B
IC6
3C
Q17
2B
IC7
3B
Q18
2A
IC9
4B
IC14
4D
IC12
4A
IC15
4B
IC16
5C
IC19
4B
IC22
3A
X14-6900-10
Ref. No
address
Ref. No
address
IC5
3H
Q1
4J
IC8
3I
Q2
4J
IC10
4J
Q11
4I
IC11
3I
Q12
4H
IC13
5G
Q13
4H
IC17
4H
Q19
3I
IC18
4H
Q21
2I
IC24
3J
Q51
2I
IC23
3J
Q50
3I
IC25
3I
IC30
3I
IC31
3I
IC32
3I
IC33
2H
IC34
2H
IC35
2G
X14-6900-10

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