KENWOOD KRF-V4550D Service Manual

Cover page of KENWOOD KRF-V4550D Service Manual

Service Manual for KENWOOD KRF-V4550D, downloadable as a PDF file.

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KRF-V4550D/V4550DE
KRF-V4550D-S
SERVICE MANUAL
© 2001-1/B51-5701-00 (K/K) 1704
70%
AUDIO VIDEO SURROUND RECEIVER
SPEAKER
MUTE
STANDBY
POWER
LISTEN MODE
SOUND
SOURCE DIRECT
AUTO
BAND
MEMORY
INPUT SELECTOR
VOLUME CONTROL
UP
DOWN
PROLOGIC
3 STEREO
DOLBY
DIGITAL
INPUT MODE
SET UP
DIMMER
MONITOR
PHONES
ON/STANDBY
ON
OFF
6CHINPUT
FOR EXTRA DIGITAL AUDIO FORMAT
MULTI CONTROL
DIGITAL IN
OPTICAL
DVD
CD/DVD
VIDEO
VIDEO 2
COAXIAL
VIDEO 1
VIDEO 2
PLAY IN
REC OUT
SYSTEM CONTROL
SUB WOOFER PRE OUT
AC OUTLET
SWITCHED
TOTAL 90W MAX
AC 230V~50Hz
FM
75
GND
AM
MONITOR
PLAY IN
PLAY IN
REC OUT
AUDIO
L
R
MD/TAPE1
CD/DVD
PHONO
GND
REC OUT
FRONT
L
CENTER
SURROUND SUB WOOFER
DVD/6ch INPUT
R
FRONT SPEAKERS
CENTER SPEAKERS
Knob *
(K29-)
Front glass
(B10-3679-12)
Panel *
(A60-)
Knob *
(K29-)
Knob *
(K29-)
Knob *
(K29-)
Knob *
(K29-)
Knob *
(K27-)
Pin jack
(E63-1139-05)
Pin jack
(E63-1080-05)
Miniature phone jack
(E11-0293-05)
Power cord bushing
(J42-0083-05)
AC power cord
(E30-2942-05)
Lock terminal board
(E20-0321-05)
Pin jack
(E63-1143-05)
Pin jack
(E63-1146-05)
Screw terminal board
(E70-0122-05)
Lock terminal board
(E70-0057-05)
AC outlet
(E03-0149-05)
Pin jack
(E63-1141-05)
Optical receiving module
(W02-2716-05)
Knob *
(K29-)
Phone jack
(E11-0272-05)
Metallic cabinet *
(A01-)
* Refer to parts list on page 24.
background image
KRF-V4550D/V4550DE
KRF-V4550D-S
SERVICE MANUAL
© 2001-1/B51-5701-00 (K/K) 1704
70%
AUDIO VIDEO SURROUND RECEIVER
SPEAKER
MUTE
STANDBY
POWER
LISTEN MODE
SOUND
SOURCE DIRECT
AUTO
BAND
MEMORY
INPUT SELECTOR
VOLUME CONTROL
UP
DOWN
PROLOGIC
3 STEREO
DOLBY
DIGITAL
INPUT MODE
SET UP
DIMMER
MONITOR
PHONES
ON/STANDBY
ON
OFF
6CHINPUT
FOR EXTRA DIGITAL AUDIO FORMAT
MULTI CONTROL
DIGITAL IN
OPTICAL
DVD
CD/DVD
VIDEO
VIDEO 2
COAXIAL
VIDEO 1
VIDEO 2
PLAY IN
REC OUT
SYSTEM CONTROL
SUB WOOFER PRE OUT
AC OUTLET
SWITCHED
TOTAL 90W MAX
AC 230V~50Hz
FM
75
GND
AM
MONITOR
PLAY IN
PLAY IN
REC OUT
AUDIO
L
R
MD/TAPE1
CD/DVD
PHONO
GND
REC OUT
FRONT
L
CENTER
SURROUND SUB WOOFER
DVD/6ch INPUT
R
FRONT SPEAKERS
CENTER SPEAKERS
Knob *
(K29-)
Front glass
(B10-3679-12)
Panel *
(A60-)
Knob *
(K29-)
Knob *
(K29-)
Knob *
(K29-)
Knob *
(K29-)
Knob *
(K27-)
Pin jack
(E63-1139-05)
Pin jack
(E63-1080-05)
Miniature phone jack
(E11-0293-05)
Power cord bushing
(J42-0083-05)
AC power cord
(E30-2942-05)
Lock terminal board
(E20-0321-05)
Pin jack
(E63-1143-05)
Pin jack
(E63-1146-05)
Screw terminal board
(E70-0122-05)
Lock terminal board
(E70-0057-05)
AC outlet
(E03-0149-05)
Pin jack
(E63-1141-05)
Optical receiving module
(W02-2716-05)
Knob *
(K29-)
Phone jack
(E11-0272-05)
Metallic cabinet *
(A01-)
* Refer to parts list on page 24.
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KRF-V4550D/V4550DE/V4550D-S
2
CONTENTS / ACCESSORIES
CONTENTS / ACCESSORIES .................................. 2
BLOCK DIAGRAM ......................................................3
ADJUSTMENT ............................................................4
PC BOARD ................................................................ 5
SCHEMATIC DIAGRAM ............................................ 9
EXPLODED VIEW ....................................................23
PARTS LIST..............................................................24
SPECIFICATIONS ......................................Back cover
Contents
FM indoor antenna (1)
(T90-0877-05)
Remote control unit (1)
(A70-1470-05): RC-R0513
Batteries (R6/AA) (2)
AM loop antenna (1)
(T90-0852-05)
Battery cover (A09-1178-08)
Accessories
Please refer to KRF-V4530D(B51-5597-00) on microprocessor MN101C35DRA4(same function as
MN101C35DRA)
Resetting the Microcomputer
The microcomputer may malfunction (unit cannot be operated,
or shows an erroneous display) if the power cord is unplugged
while the power is ON, or due to some other external factor. If
this happens, execute the following procedure to reset the
microcomputer and return the unit to its normal operating
condition.
· Please note that resetting the microcomputer will clear the con-
tents of the memory and returns the unit to the state it was in when
it left the factory.
With the power cord plugged in, turn the POWER key
OFF. Then, while holding down the ON/STANDBY key,
press POWER.
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KRF-V4550D/V4550DE/V4550D-S
3
LINE BUF
PHONO EQ
TUNER
AK4527
LPF
LPF
LPF
LPF
x2
x2
x2
x1
M62446SP
6ch E. VOL
with 2ch
TONE CONT.
x0.5
BUF
IC113
+20/0dB
+B
HIT
AP
-B
HIT
AP
+B
LOWT
AP
-B
LOWT
AP
VIDEO2
(VIDEO2/MONI.)
VIDEO1
CD
PHONO
MD
/TAPE
MONI
PLAY
REC
OUT
Lch
H, P, Rch
H, P, Lch
Rch
Cch
SWch
SP-A
AC IN
MUTE
+5V
A.V.R
for
u-COM
+15V
A.V.R
A.V.R
-15V
+5V
+7V
-7V
A.V.R
5V
for E. VOL
u-COM
for FIL AC
(AUDIO & VISUAL)
TUNER etc.
for AMP (HI TAP)
for AMP (LOW TAP)
for RELAY SW
J1
IC601,602
SWITCHED
D101
D103
D41
IC103
IC104
-30V
Q54
IC51
IC2
IC15
Q7
Q8
Q13
Q1
Q2
Q14
Q11
Q12
Q17
Q5
Q6
IC114
for INPUT SEL.
CIRCUIT
(1/2)
(2/2)
(1/2)
(1/2)
(2/2)
(2/2)
IC111
IC111
IC112
IC110
IC110
IC112
6ch INPUT
DVD
SUB
#S5
#S2
DIG
#S4
R,L
MIX
#S3
LS,RS
#S7
NOSUB
ANA
#S1
REC OUT BUF.
IC107
ANALOG REC
DIGITAL REC
D102
A.V.R
for
DIR etc.
A.V.R
3.3V
IC46
J75
DSP
Lch
Rch
Cch
LSch
RSch
SWch
IC45
for DSP
A.V.R
5V
J1
J1
K1
K2
K4
LSch
RSch
J2
J7
IC101 or
IC102 or
CODEC
(ADC&DAC)
AK4110
IC5
A1
J3
OPTICAL
CD/DVD
COXIAL
COXIAL
DIGITAL
IN
AUDIO
DIGITAL
RECEIVER
6ch INPUT
DVD
AUDIO IN/OUT
20dB AMP
IC105
(VIDEO2/
MONI.)
VIDEO1
/MD
TAPE
(VIDEO2
/MONI.)
MONI.
/12dB ATT
6dB/9dB
IC14
TACT KEY
MAIN
u-COM
IC1
RDS
IC4
LED
ENCODER
FL
BU1923F
HNA-11MS24
ED1
SYNC
DIR
for DSP. AD/DA.
ANALOG 6ch
INPUT SELECTOR
LFE
DA
AD
2
BYPASS
SW
C
LS,RS
L, R
L, R
L
R
C
LS
RS
SW
C
LS/RS
L/R
+
+
+
+
+
+
+
4700uF
4700uF
3300uF
470uF
2200uF
3300uF
2200uF
+
2
IC2
2
2
(X07)
(X14)
(X08)
BLOCK
DIAGRAM
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KRF-V4550D/V4550DE/V4550D-S
4
ADJUSTMENT
No.
ITEM
INPUT SETTINGS
OUTPUT
SETTINGS
RECEIVER
SETTINGS
ALIGNMENT
POINTS
ALIGN FOR
FIG.
1
DISCRIMINATOR
(A)
98.0MHz 1kHz,
±40kHz dev.
Connect a DC
voltmeter
between
1 and 2
of CN4 on
(X07).
MONO
98.0MHz
L4
(X07)
0V
3
DISTORTION
(STEREO)
98.0MHz
(C)
1kHz,
±40kHz dev.
Selector : L or R
Pilot :
±6kHz dev.
70dBf (ANT. input)
(B)
AUTO
98.0MHz
IFT
(FRONT END
: A1)
Minimum distortion
(L or R)
2
DISTORTION
(MONO)
(A)
98.0MHz 1kHz,
±40kHz dev. MONO
70dBf (ANT. input)
(B)
MONO
98.0MHz
L5
(X07)
Minimum distortion
4
TUNING LEVEL
(A)
98.0MHz MONO 1kHz,
±40kHz dev.
29.2dBf (ANT. input)
(B)
MONO
98.0MHz
VR1
(X07)
Adjust VR1 and
stop at the point
where ED1
(TUNED) goes on.
FM SECTION
SELECTOR : FM
Adjust NO.1 and NO.2 repeatedly.
70dBf (ANT. input)
DIGITAL IN
OPTICAL
DVD
CD/DVD
VIDEO
VIDEO 2
COAXIAL
VIDEO 1
VIDEO 2
PLAY IN
REC OUT
SYSTEM CONTROL
FRONT SPEAKERS
CENTER SPEAKERS
SUB WOOFER PRE OUT
AC OUTLET
SWITCHED
TOTAL 90W MAX
AC 230V~50Hz
FM
75
GND
AM
MONITOR
PLAY IN
PLAY IN
REC OUT
AUDIO
L
R
MD/TAPE1
CD/DVD
PHONO
GND
REC OUT
FRONT
L
CENTER
SURROUND SUB WOOFER
DVD/6ch INPUT
R
(A)
(B)
(C)
FM SG
FM SG
TV SG
AG
MPX
HTB
TV MPX
AG
AG
AC voltmeter
Oscilloscope
Distortion meter
Dummy antenna
(D)
SYSTEM CONNECTIONS
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IC105
IC108
IC107
Q140
Q115
D130
Q113
Q116
Q139
D127
D106
Q132
Q114
IC1
1
0
IC106
Q5
Q6
D117
Q12
Q11
D122
D124
D1
15
D1
13
D1
14
IC109
D112
D1
1
1
D118
Q117
D128
Q142
D129
Q141
Q16
D1
Q52
Q112
Q53
Q111
Q51
Q121
Q1
18
D121
IC1
1
2
Q4
IC
111
D108
D109
D1
10
Q135
Q136
Q9
Q10
Q3
Q15
Q119
Q120
D120
D190
D107
Q202
Q201
D201
Q211
Q210
IC203
D207
D216
D213
D211
Q209
Q208
Q212
Q206
Q203
Q204
Q214
Q215
Q207
IC601
PHONO EQ.
1
W324
W523
W311
R279
C245
W301
R132
R131
R129
R130
R136
R137
R135
R133
R134
R128
R120
R121
R1
19
R1
17
R1
18
R122
R126
R127
R125
R123 R124
R146
R145
R144
R149
R148
R147
R140
R139
R138
R141
R142
R143
R150
R151
R152
C120
C121
C123
C125
W336
C127
C129
C131
C133
C135
C124
C126
C119
C130
C132
C134
C136
C128
R153
C140
C122
C139
C102
C101
R102
C106
R103
R101
R104
C105
R105
R106
R154
R155
C143
R156
C144
R339
R280
R395
C248
R179
C109
C110
R350
R389
R387
R388
R390
R320
R247
R248
W108
R246
R245
C188
C187
R205
R340
R206
C159
C160
W319
R188
R202
R201
R204 R203
C249
C250
R174
R180
W329
W320
R173
R375
R341
R328
R234
R262
R225
R209
R210
W330
R224
R233
W302
C186
R278
R220
W312
R219
R256
R250
C168 C170
C169
C167
C203 C204
C224
C218
R241
R239
R240
R242
R197
R198
R266
R276
R277
R265
R196
R195
C173 C174
R164
W514
W513
R162
R161
R163
R332
C163
W506
R329
R334
R333
C157
C164
R187
R177
C162
R178
C265
R222
C158
R175
R186
R176
C152
R185
R244
W305
C161
R270
W306
R327
R223
R221
C185
R159
R243
R200
R325
R199
R268
R324
R257
R302
R249
C191
C192
R301
C213
C210
W313
C211
R267
C267
C228
W333
R378
C227
R377
R307
C197
C198
C195
C196
C216
C215
R308
W307
W343
R281
W322
R367
R170
R169
R315
R370
R365
R366
R368
R369
W303
W328
C147
R361
R362
R371
R373
R372
R352
R353
R269
R351
R363
R336
R335
W331
W332
W323
R331
R330
W327
R167
W326
C151
R384
R326
C247
R337
W317
W318
R168
R166
C148
R165
R356
R171
R172
C222
R273
R253
C205
R252
C207
W340
R272
R271
C220
R251
R360
R254
R274
R284
W310
W342
C180
R216
R215
C175
R213
C179
C230
C229
R214
R212
C176
R21
1
R358
R217
R218
R357
W325
W309
R323
W321
W308
R314
R313
W316
W315
W341
W304
R394
R392
R391
R393
C268
R285
W338
W334
W339
W337
W335
R283
R310
R309
C266
R287
E
B
BE
BE
E
B
E
B
E
B
BE
EB
E
B
E
B
E
B
EB
EB
E
B
EB
EB
EB
E
B
EB
EB
E
B
EB
B
E
BE
E
B
E
B
EB
EB
EB
EB
E
B
14
28
15
1
4
8
5
1
4
58
14
5
8
5
8
14
4
1
85
1
14
15
28
14
85
AM STEREO
R75
C84
C9
C92
C93
C88
R89
R90
C91
C89
C90
C35
C83
C87
W660/R32
W653
R29
C8
C58
C56
C57
C61
C60
C36
R43
R48
R66
R63
R62
R69
R67
R68
R18
R19
R34
R33
R20
C69
C63
W685
C4
W659
W681
W686
C81
C5
R84
C6
C1
C2
C3
C82
C78
C75
C1
1
C12
C39
C25
C26
C24
C42
C41
C40
C30
C22
C52
C45
C47
C50
C51
C18
C20
C43
C44
R55
R79
R56
R53
R54
R57
R51
R52
R49
R42
R80
R82
R11
R14
W656
R12
R15
R16
R17
R10
R4
R1
R5
R8
R9
R6
R7
R35
R39
R38
R23
R28
R25
R76
W683
R74
R78
R47
W684
R45
R46
W661
R27
C31
C76
C79
W651
R31
R36
W655
R83
C77
W662
R64
R65
R60
R59
R58
W652
R30
C80
R72
C71
R73
C70
C34
C33
W682
C64
R37
W680
W654
R88
R85
C86
C85
R86
R87
C74
C606
C13
EB
E
B
EB BE
E
B
EB
E
B
EB
EB
EB
E
B
E
B
E
B
I
GO
18
16
9
Q54
Q138
(WH1)
(WH1)
Q137
CN7
J1
D103
D101
D126
D125
Q134
D105
Q2
WH2
CN2
WH4
WH5
WH3
Q1
D104
D102
Q17
D123
Q122
Q123
IC104
Q14
Q13
Q8
Q7
WH4
WH5
WH3
WH2
CN1
J6
J5
J4
J3
CN3
E2
E3
CN6
Q133
J7
PRE OUT
AUDIO
WOOFER
SUB
PLAY IN
REC OUT
PLAY IN
REC OUT
VIDEO1
VIDEO2/MONITOR
MD/TAPE
REC OUT
PLAY IN
CD/DVD
PHONO
J2
X07-3142-71 A/3 (J70-1370-41)
SURROUND SPEAKERS
LR
CENTER
SPEAKER
LR
FRONT
SPEAKERS
IC113
IC101
IC102
IC114
E1
FM DET MPX
foru-COM
+5.4VA
VR
CN5
D206
A1
IC201
D204
D203
D209
IC202
CN4
J8
IC602
D604
CN67
CN68
CN66
CN69
D605
D603
D602
Q601
D608
CN62
CN63
CN61
CN64
X07 C/3
CN65
J61
S1
AC
OUTLET
X07 B/3
ANTENNA
RED
BRN
YEL
YEL
WHT
RED
BRN
WHT
R259
R184
R183
C251
R312
R182
W174
W189
W164
W109
W86
W66
W61
W1
12
W84
W180
W3
W81
W7
W152
W192
W211
W187
W196
W167
W179
W168
W212
W132
W185
W150
W9
W119
W155
W130
W125
W154
W136
W19
W161
W158
W129
W101
W94
W183
W151
W33
W117
W76
W30
W184
W215
L8
W80
W56
W43
W45
W44
W35
W34
W18
W28
W46
W182
W172
W88
W118
W72
W32
W71
W60
W58
W57
W53
W29
W67
W40
W42
W74
W41
W21
W1
1
W12
W128
W82
W54
W173
W73
W90
W79
W78
W102
W156
W107
W17
W31
W157
W27
W37
W39
W77
W48
W5
W1
W15
W213
W139
W153
W137
W10
W6
W24
W36
W209
W203
W204
W206
W49
W50
W122
W38
W14
W16
W8
W176
W195
W52
W210
W65
W91
W93
W142
W146
W169
W145
W141
W138
W166
W1
15
W126
W135
W114
W87
W85
W83
W162
W68
W69
W70
W165
W171
W178
W124
W123
C239
C200
C240
C202
R319
K4
W199
C142
C145
C146
C141
C108
C103
C107
C104
C1
15
C116
R157
R160
K3
R158
C241
R381
R345
C114
C113
C242
C244
C243
C246
C111
C112
R1
13
R112
R1
14
R111
R108
R107
R110
R109
C137
C138
R382
C238
R207
C172
W25
R116
R115
R228
R230
R385
R229
R399
R260
R386
R383
R227
W188
R31
1
C252
C1
17
C1
18
K1
R322
C259
C237
W22
R235
L102
R318
R317
R181
R316
L101
C166
C153
C253
C254
W92
W55
W96
C225
C226
R232
R231
C193
.
C183
R258
C194
C184
R379
R355
R261
C209
C214
C154
C212
C189
R189
R190
R346
W104
C171
C217
W47
C264
W1
16
W51
C165
C155
C156
C262
R303
R304
R364
R347
R342
C257
C258
C235
R354
R306
R305
R374
C236
W194
W207
W95
W4
W2
R286
R338
K2
R263
R236
C201
C199
IC103
R348
R343
W149
W198
C190
R226
R282
C417
C415
R380
C263
W97
C261
R321
C416
W59
R349
W218
C255
C149
C150
R359
R397
C206
C221
W148
C177
C178
R398
W205
C260
C181
C182
C208
C223
R376
R193
R194
R275
R237
R238
R264
W191
W217
R208
C256
W200
W201
W13
C270
W208
W144
W62
W26
W190
W216
W20
W163
R344
L103
L105
L104
C233
R191
R192
W143
R255
C234
C231
C232
C269
1
8
1
5
I
GO
G
IO
6
5
2
1
1
2
5
6
2
1
23
22
1
2
33
32
11
5
EB
EB
BE
EB
EB
B
E
BE
BE
EB
EB
EB
EB
B
E
EB
22
1
1
18
1
1
14
18
ON
OFF
7.2MHz
3.6MHz
W133
W177
W127
W160
W159
W202
W1
10
W105
W121
W134
W140
W
111
W1
13
W120
W106
W175
W193
W197
W181
W147
W170
W131
W89
W103
W63
15
W75
W23
W64
(W)
AM RF
(G)
T.METER
MPX.FIL.
FM
TUNED
FM IF
PLL
VT
125V
PRIMARY
F1
8A
F2
L
C17
C28
C38
C29
C37
VR1
CF1
CF2
C10
CF3
L2
R50
R44
R71
C49
C46
C72
C32
C14
C15
C67
C68
C55
L3
C62
C66
C65
L1
C73
C7
R81
C27
C16
C19
C21
C23
L6
L7
L5
C48
R41
L4
R70
R40
R77
R61
C54
C59
C53
R2
W250
C604
R604
K601
R610
R605
R606
D601
R601
T1
C602
C603
R609
R3
C605
R603
R602
W251
AC
SW
T2.5A
250V
P61
C601
X2
Vref
X1
OG
I
E
21
21
12
3
1
11
22
12
1
15
16
30
1
8
1
2
115
B
ACE
G
I
BD
F
H
J
2
1
3
5
7
4
6
Refer to the schematic diagram for the value of resistors and capacitors.
PC BOARD (Component side view)
5
6

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