Kenwood RXD-M52-L User manual

70%
In compliance with Federal Regulations, following are repro-
duction of labels on, or inside the product relating to laser
product safety.
KENWOOD-Crop. certifies this equipment conforms to DHHS
Regulations No.21 CFR 1040. 10, Chapter 1, subchapter J.
DANGER : Laser radiation when open and interlock defeated.
AVOID DIRECT EXPOSURE TO BEAM.
MICRO HiFi COMPONENT SYSTEM
RXD-M52-L
SERVICE MANUAL
© 2000-6/B51-5639-00 (K/K) 3453
(HM-532-L)
Panel
(A29-1104-04)
Knob
(K29-7770-13)
Knob
(K29-7773-04)
Front glass
(B10-3606-03)
Indicator
(B12-0398-04)
Dressing panel *
(A21-)
Knob
(K29-7772-14)
Knob
(K29-7769-03)
Escutcheon
(B07-2525-12)
*Refer to parts list on page 27.
Althrough this service manual is described MD circuit
description, it is no concern with RXD-M52(deck version).
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(T90-0852-05)
(A70-1401-05): KMX.....RC-M0302
(A70-1403-05): TEH......RC-M0302E
Battery cover (A09-1161-08)
(E30-5828-05)
(T90-0858-05) (J02-0624-08)
AM loop antenna (1)
Remote control unit (1) Batteries (R6/AA) (2)
Feet for speaker (8)
Speaker cords(2)
FM indoor antenna (1)
* AC plug adaptor (1)
(E03-0115-05)
* Use to adapt the plug on the power cord to the shape of the wall outlet.
(Accessory only for regions where use is necessary)
RXD-M52
2
CONTENTS / ACCESSORIES / CAUTIONS
CONTENTS / ACCESSORIES / CAUTIONS............. 2
EXTERNAL VIEW .......................................................3
CIRCUIT DESCRIPTION ............................................4
ADJUSTMENT ............................................................7
PARTS DESCRIPTIONS ............................................8
PC BOARD ................................................................ 9
SCHEMATIC DIAGRAM .......................................... 13
EXPLODED VIEW ....................................................25
PARTS LIST..............................................................27
SPECIFICATIONS ......................................Back cover
Contents
Accessories
Operation to reset
The microcomputer may fall into malfunction (impossibility
to operate, erroneous display, etc.) when the power cord is
unplugged while unit is ON or due to an external factor. In
this case, execute the following procedure to reset the
microcomputer and return it to normal condition.
• Please note that resetting the microcomputer clears the
contents stored in and it returns to condition when it left
the factory.
Unplug the power cord from the power outlet then, while
holding the menu/demo key depressed, plug the power
cord again.
menu
/demo
Cautions
SYSTEM MAIN UNIT DESTINATION SPEAKER COLOR
HM-532-L RXD-M52-L KETMXH LS-M52-L BLUE
System configuration
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RXD-M52
3
EXTERNAL VIEW
+
-
+
-
Oscillating module
(W02-2732-05)
AC power cord *
(E30-)
AC power cord bushing
(J42-0083-05)
Lock terminal board
(E70-0127-05)
Pin jack
(E63-1082-05)
Lock terminal board
(E70-0053-05)
Pin jack
(E63-0164-05)
*Refer to parts list on page 27.
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RXD-M52
4
CIRCUIT DESCRIPTION
CD mecha unit
CDM-34
DECK mecha unit
NJU3713D (IC4)
EXPANDER IC
X28
MDM-06
MD mecha unit
HD6432227N01FA
Back up
circuit
A/D
X29, IC1
M30624MG-304FP(DECK)
-303FP(MD)
SIO
SIO
PWM
Main uCOM
PWM
A/D
A/D
AMP hadrware
circuit
AMP_ system_IC
(input selecter)
TUNER unit
(RDS unit)
CD TAPE MD TUNER AUX
X29, IC8
A/D
A/D
A/D
INT
INT
RESET
EEPROM
INT
INT
UART A/D A/D
encoder
REM
stnby
eject
cd md/ tape
Key matrix
(8keys X
2 lines)
LCD module
(64✽64dot)
LCD driver
RESET & CE
circuit
(mech ucom)
3. Microprocessor :M30624MG-303FP(MD version)
:M30624MG-304FP(DECK version)
3-1 Microprocessor periphery block diagram
DESTI- DESTINATION SW RECEIVING CHANNEL
UNIT 3 2 1 BAND FREQUENCY IF RF EMPHASIS
NATION (40Pin) (39Pin) (38Pin) RANGE SPACE
K,P KI 0 0 0 FM 87.5MHz~108.0MHz 100kHz +10.7MHz 25kHz 1
AM 530kHz~ 1700kHz 10kHz +450kHz 10kHz 0
ME1 0 0 1FM 87.5MHz~108.0MHz 50kHz +10.7MHz 25kHz 0
AM 531kHz~ 1602kHz 9kHz +450kHz 9kHz 0
E,T E3 110
FM 87.5MHz~108.0MHz 50kHz +10.7MHz 25kHz 0
(RDS) AM 531kHz~ 1602kHz 9kHz +450kHz 9kHz 0
1. Initializing the CD/CASSETTE Receiver
1-1 Initialization Method
The CD/CASSETTE receiver will be initialized when you pressed [SOUND] key and turn the AC on.
1-2 Contents of Initialization
CD disc will be ejected from CD mechanism after initialized.
2. Conditions according to the Destination
( ) Port of Microprocessor
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RXD-M52
5
CIRCUIT DESCRIPTION
3-2 Pin Description of Microprocessor
Pin No. Pin Name I/O Description
1 8SW2 I Detection port of 8cm disc for CD mechanism.
2 SCLK O Clock output to DSP IC(X29,IC9).
3 SENS I Sense input port from DSP IC(X29,IC9).
4 FAN/DA O Control port of fan motor.
5 DATA O Data output to DSP IC(X29,IC9).
6 XRST O Reset output to DSP IC(X29,IC9).
7 CLOK O Clock output to DSP IC(X29,IC9).
8 BYTE - Connected to ground.
9 CNVSS - Connected to ground.
10 XTIN I Clock input(32.768kHz).
11 XTOUT O Clock output(32.768kHz).
12 RESET I Reset signal input.
13 XOUT O Main clock output(1MHz).
14 VSS - Connected to ground.
15 XIN I Main clock input(1MHz).
16 VCC - Power supply.
17 NMI - Power supply.
18 u-COM CE I Detection port of AC off.
19 REM I Input port of remote control signal.
20 SCOR I Input port of sub code synchronized signal.
21 STBY RED O Standby LED(red) control terminal.
22 LCD BKLT O Control terminal of LCD back light.
23 STBY GR O Standby LED(green) control terminal.
24 LED CD O LED(CD) control terminal.
25 LED MD/TAPE O LED(MD/TAPE) control terminal.
26 CD XLAT O Latch output to DSP IC(X29,IC9).
27 ENC A I Input port of volume encoder.
28 ENC B I Input port of volume encoder.
29 MD RXD I Data input from MD mechanism microprocessor.
30 MD TXD O Transmission data output to MD mechanism microprocessor.
31 LCD SI O Data output to LCD driver.
32 LCD AO O AO control to LCD driver.
33 LCD SCL O Clock output to LCD driver.
34 LCD RST O Reset output to LCD driver.
35 SMK M/D I Discrimination port for deck and MD.
36 SQSO I Data input for CD sub Q data.
37 SQCK O Clock output for CD sub Q data.
38-40 SMK1-3 I Discrimination port of destination for TUNER.
41 STB O Strobe output to NJU3713D(X28,IC4).
42 W/R O Unused.
43 SDA I/O E2PROM data.
44 SCL O E2PROM clock output.
45 OP SW I Input port of open switch for deck(deck version only).
46 LCD CSI O CE output to LCD driver.
47 CL SW I Input port of close switch for deck(deck version only).
48 PH SW I Input port of photo sensor for deck(deck version only).
49 REC F SW I Deck forward switch input(deck version only).
50 HALF SW I Input port of half switch for deck(deck version only).
51 PLAY SW I Input port of play switch for deck(deck version only).
52 TYPE SW I Detection port for tape type(Normal/CrO2).
53 REC R SW I Deck reverse switch input(deck version only).
54 SBUSY - Unused.
55 SDATA - Unused.
56 RDS DATA I RDS data input(E/T type only).
57 TMUTE O TUNER muting control.
58 SD I Detection terminal of SD signal for TUNER.
59 ST I Detection terminal of stereo signal for TUNER.
60 PLL DATA O Data output to PLL IC.
61 PLL CLK O Clock output to PLL IC.
62 VCC - Power supply.
63 PLL CE O PLL chip enable.
64 VSS - Connected to ground.
65 PLL DO I PLL IF count input.
66 EMP/MONO O Control port of DE-emphasis.
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RXD-M52
6
CIRCUIT DESCRIPTION
Pin No. Pin Name I/O Description
67 AMUTE O Audio muting control.
68 SPRLY O Speaker relay control.
69 PWRRLY O Power relay control.
70 NC - Disconnected.
71 HPRLY O Relay control terminal for headphones.
72 HPDET I Detection terminal of headphones.
73 EVR CLK O Clock output to sound controller(X29,IC6).
74 EVR DATA O Data output to sound controller(X29,IC6).
75 RDS CLK I RDS clock input(E/T type only).
76 BACK CHK/ DECK SLT CL O Detection port of back up voltage for MD mechanism. (MD version)
Control port of slot closing for deck. (Deck version)
77 BACK ON/ DECK SLT OP O Power on for MD mechanism. (MD version)
Control port of slot opening for deck.(Deck version)
78 MD RST/DECK CLK O Reset of MD mechanism and the clock of expander IC for deck.
79 MD CE/DECK DATA O CE of MD mechanism and the data of expander IC for deck.
80 MSTOP I Detection port of loading end for CD mechanism.
81 LD ON O Control port of laser on.
82 SPEED O Play back output port of hi-speed for CD.
83 DC OFF O Power control of system IC(X29,IC10) for CD.
84 LOAD OUT O Control port of loading out for CD mechanism.
85 LOAD IN O Control port of loading in for CD mechanism.
86 V/H O Control port of vertical and horizontal for CD. V/H version only
87 DINSW I Detection port of disc in for CD.
88 8SW1 I Detection port of 8cm disc for CD.
89 XY SW I Input port of sensor for vertical and horizontal. V/H version only
90 PROT I Detection port of current protection.
91 PROT TEMP I Detection port of temperature compensating for protection.
92 AIN LEVEL I Input port of audio signal.
93 BACKV I Input port of back up voltage for MD.
94 RDS SLEVEL I RDS signal level input(E/T type only).
95 KRO I Key return signal input.
96 AVSS - Connected to ground.
97 KR1 I Key return signal input.
98 AVREF - A/D,D/A reference voltage.
99 AVCC - A/D,D/A power supply.
100 12SW I Detection port of 12cm disc for CD.
Deck version only.
4. CD Test Mode
4-1 Entering the Test Mode
To enter the test mode, press the CD [PLAY/PAUSE] key
and turn the AC on.
4-2 Cancelling the Test Mode
Turn the AC off.
4-3 Keys and Operation in the Test Mode
KEYS LCD OPERATION
CD CD TEST-03 Tracking servo off.
PLAY/PAUSE CD TEST-05 All servo on.
menu/demo – FB operation when servo on.
Sled in when servo off.
CD TEST-22 HI Hi speed (CD servo) when
sound stop mode
CD TEST-22 Normal speed (CD servo) when
stop mode.
set CD TEST-05 FF operation when servo on.
Sled out when servo off.
5. Cassette Deck Test Mode
5-1 Entering the Test Mode
5-1-1 Tape Check Mode
• Turn the AC on with pressing the TAPE[PLAY] key.
5-1-2 Mechanism Check Mode
• Turn the AC on with pressing the TAPE[PLAY] and
[menu] keys simultaneously.
5-2 Cancelling the Test Mode
Turn the AC off
5-3 Keys and Operation in the Test Mode
TEST MODE KEYS OPERATION
DISPLAY Change-over the test mode
indication.
1Mecha.Test menu/demo Loading Test(Load in)
Mode sound Loading Test(Load out)
SLEEP Change-over the vertical and
(remote control) horizontal for LCD.
rec 4seconds recording
2Tape Check set Change-over the dolby on/off.
Mode sound Change-over the beat cancel
on/off.
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RXD-M52
7
CD section
NO. ITEM INPUT
SETTINGS
OUTPUT
SETTINGS
CD PLAYER
SETTINGS ALIGNMENT ALIGN FOR FIG.
TEST MODE : While pressing the CD PLAY/PAUSE key, plug the power cord into the AC power wall output.
Load the TEST DISC.
[1] LASER CURRENT
CHECK
Test disc
type 4
Connect the DC voltmeter
between 3and 4of CN4
on X29.
Press the PLAY/PAUSE
key to check that the
display is 03 or05. —50±20mA
[2]
FOCUS ERROR
BIAS
(Set up vertically)
Test disc
type 4
Connect an oscilloscope
as follows. Press the PLAY/PAUSE
key . Confirm that the
display is 05.
FE BIAS
VR 1
(V/H version only)
Optimum eye pattern
[3]
FOCUS ERROR
BIAS
(Set up horizontally)
Test disc
type 4
Connect an oscilloscope
as follows.
CH1:RF(X29,CN4, 1)
GND:VC(X29,CN4, 2)
CH1:RF(X29,CN4, 1)
GND:VC(X29,CN4, 2)
Press the PLAY/PAUSE
key . Confirm that the
display is 05.
FE BIAS
VR 2 Optimum eye pattern
Note:
Type 4disc: SONY YEDS-18 Test Disc or equivalent.
Keep the step of adjustment.
+
-
+
-
CASSETTE DECK
NO. ITEM INPUT
SETTINGS
OUTPUT
SETTINGS
CASSETTE DECK
SETTINGS ALIGNMENT ALIGN FOR FIG.
Unless otherwise specified, set the respective switches as follows:
TAPE: NORMAL INPUT: AUX IN OUTPUT: AUX OUT 0dBm=0.775V
ø. Cassette mechanism (REC/PB head adjustment)
Demagnetization
and cleaning ——
(POWER OFF)
demagnetization
(PLAY)
cleaning
REC/PB head
erase head
capstan
pinch roller
Demagnetize the REC/PB head by
head eraser. Clean the REC/PB head
,eraser head, capstan and pinch
roller with a cotton swab immersed
in alcohol.
REC/PB head
azimuth
TCC-153
MTT-114
10kHz,-10dB
(B) PLAY
Adjust the output to maximum and
adjust the azimuth adjustment
screw for the Lissajous waveform
pattern of the oscilloscope to
become close to a 45ßstraight line.
¿. Capstan motor adjustment
Tape speed
(NORMAL)
TCC-110
MTT-111
3kHz
(B) PLAY VR.
inside motor
Adjust so that the frequency 3kHz
at the center of the tape.
¡. PC board adjustment
Playback level TCC-130 (B) PLAY VR1(Lch),VR2(Rch) -2.5dBm
(B) REC PLAY
Bias current
TCC-108
12.5kHz
-24dBm
(A)
VR3(Lch)
VR4(Rch) -24dBm
Measurement equipment connection
FWD
RVS
{
(A) (B)
AC voltmeter AC voltmeter
Oscilloscope
Distortion meter
AG
ADJUSTMENT
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PARTS DESCRIPTIONS
RXD-M52
8
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R37
R119
R128
R130
R122
R118 R121
R38
C111
R25
R24
C108
C110
C107
C106
R129
W309
R235
R229
R223
R237
R239
R236
R203
R209
R208
R132
R131
R133
R210
R218
R220
R222
R221
R212
R211
R213
R214
R9
R19
R21
C112
R10
R22
C114
C113
R20
R15
R18
R17
R23
R16
W308
R116
R117
C9C10
R108
R101
R102
R227
R228
R232
R233
R2
R3
R1
R4
R5 R6
C1
C2
R271 R270
R33
R103
R104
R105
R106
R107
R31
C30
R32
R219
R238
R215
R216
R217
R12
W301
W306
W305
R262
R272
R273
R231
R11
R135
R136
R261
W310
R234
R8
R7
C13
C14
C109
C102
C101
C16
C15
C104
C4
C12
C11
C223
C20
C228
C3
C224
C236
C29
C115
R225
C217
C23
C21
C22
C24
C232
R240
C25
R126
R241
C116
C27
C26
C28
8
14
5
TH1
EB
EB
EB
EB
EB
EB EB
EB
EB
EB
EB
C257
C256
R250
R255
BE
R254
R252
C255
R251
R253
4
31
5
C254
R124
R115
R123
C18
C17
C105
R114 R113 R112 R111 R110
R109
R125
D39
Q5
Q6
Q105
D40
D31
D32
D24
D20
D21
Q8
Q2
Q1
Q10
Q11
D28
Q103
D15
D115
D41
IC4
D19 Q7
Q101
D26
Q13
IC7
D4
W40
R224
W66
W73
W33
W30
W91
W29
W38
W78
W79
W71
W48
W4
W76
W16
W14
W59
W64
W69
W70
W72
W52
W68
W65
W58
W12
W83
W18
W56
W27
W41
W86
W46
W50
W17 W15
W60
W2
W77
W21
W20
W5
W3
W31
W8
W1
W9
W11
W43
W51
W67
W36
W26
W37
W23
W22
W63
W62
W28
W25
W35
W85
W32
W34
W53
W55
W7 W49
W19
W89
W87
W47
W42
W74
W45
W54
SKIP
DOWN
TUNER
STOP
CD
EJECT
UP
SKIP
MD
CD
1
+7V AVR.
+9V
AVR.
AVR.
POWER AMP
I.PROTECTION
MUTE DRIVE.
FAN
DRIVE.
LCD CONT.
+10V AVR.
POWER
R204
R205
R201
R206
R120
W10
C225
C258
C221
C6
C5
C229
C205
C103
W13
W207
W210
W211
W208
W209
W212
W213
C31
C202 R259
C201
C241
R28
R27
R29
R30
R13
R14
C227
K2
K3
C8
C32
C203
C204
C238
W6
R134
R127
C208
W61
C206
C216
C218
C19
C213 C214
C219
C222
W44
C237
C212
C209
C210
R230
R207
W57
W24
C7
W201
W202
-10V
1
6
1
2
45
7
1
IO
G
GIO
5
1
12
1
2
4
5
1
13
15
1
14
15
21
BE
2
1
12
13
1
5
4
2
10
11
2
1
16
17
W75
2
F1
R258
121
K1
2
F.OFF
R256
W90
C252
R249
6
C253
1
T1
W80
C251
+5.1V AVR.
R257
MD EJECT
W39
15
H.P.
P4
REC AUX
1
2
4
5
ENTER SET
DISPLAY
MENU
BE
BE
BE
BE
EB
E
B
EB
WH5
WH2
X07-3220-10 A/5 (J70-1422-11)
X07 E/5
X07 D/5
X07 C/5
X07 B/5
D34
D30
D33
D29
D27
Q3 Q4
CN8
Q9
D108
D107
CN14
D23
IC3
Q102
S8
S2
S3
S4
S6
S1
S7 S5
A2
E2
CN9
D101
Q15
CN7
D25
CN6
J2
A1
J1
D3
D1
P1
CN3
IC6
IC1
D109
Q14
DIGITAL IN
SUPER
WOOFER
PRE OUT
L
SPEAKERS
ROPTICAL
CN5
CN4
IC5
WH4
D113
D110
D112
IC2
D2
CN15
D106
D114
E6
S16
P3
CN2
CN16 CN17
CN1
D6
D13
D5
D37
D8
D7
Q12
D10
E1 WH1
D11
D12
D102
S15
Q104
WH5
E4
WH3
PHONES
J4
D36
D35
S14 S13
E5 WH2
E3
S12 S11
D103
S10 S9
D104
ABDFHJCEG I
2
1
3
5
7
4
6
Refer to the schematic diagram for the value of resistors and capacitors.
PC BOARD (Component side view)
109
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KMOQSLNPRT
2
1
3
5
7
4
6
R91
R286
C158
C110
C109
C34
R104
R105
R110
R111
R77
C8
R76
R103
R101
R102
R125
R126
R124
R122
R123
R129
R127
R128
R115
R116
R114
R112
R120
R121
R119
R117
R118
R45
R46
R44
R43
R51
R47
R48
R35
R36
R34
R32
R33
R40
R41
R39
R65
R66
R63
R67
R68
R55
R56
R54 R52
R53
R60
R59
R57
R58
R231
R232
R283
R223
R213
R214
R211
R212
R215
R221
R222
R216
R217
W22
R301
R302
R303
R306
R304
R305
C7
R147
C9
R148
R258
R138
R139
R153
R188
R201
R186
R185
R202
R203
R204
R187
C160 C164
R154
R183
R184
R181
R182
C188
C182
C58
C65
C59
C64
C61
C187
C208
C120
C147
C148
C119
C118
C207
C243
C53
C117
C57
C69
C104
C115
C102
C103
C126 C125
C116
C131
C134 C133
C132
C68
C66
C67
C75
C74
C101
C152
C14
C16
C15
C33
C32
C50
C31
C22
C21
C23
W6
R14
R15
R11
R12
C10
R1
C12
R18
R2
W4
R16
W3
W5
C40
R26
R25
C39
R259
C130 C129
C127
C128
L5
C11
C63
W21
C174
C177
C175
C194
R161
R255
L6
L8
C226
C84
R261
R262
C153
C78
R251
R252
W13
W8
R172
R171
C46
C45
W14
C26
C105
C193
W1
C244
C146
C49
W31
R162
C176
C178
C232
R315
C231
R316
R241
R106
C172
C156
C157
C155
C235
W12
C236
C167
C210
C209
C28
C82
R253
R254
C224
C85
C225
C192
R190
R189
C25
C20
C227
C165
R317
R318
R320
R319
R49
R72
R64
R70
R71
R69
R8
R140
R141
R158
R152
R166
R165
R80
W7
R82
R81
R157
R13
C191
R313
R17
C251
C71
5
8
14
1
8
54
80 1
20
21
40
41
60
61
20
11
10 1
E
B
EB
EBEB
EB
SG
D
SG
D
SG
D
EB
EB
EB
EB
EB
EB
EB
EB
EB E
B
EB
EB
E
B
IC8
Q13
Q12
Q17
Q18
Q19
Q14 Q15
Q16
Q3
Q1
Q24 Q23
Q25
Q4
Q7
D22
D4
D2
D1
IC7
D26
IC15
D3
Q29
D25
Q30
Q6
IC9
Q22
Q20
Q21
D24
D10
Lch
IN
OUT
IN
Rch
OUT
JIGU
C81
R207
R78
C150
C72
C149
C201
C185
C205
C202
C163
C181
C171
C113
C124
C123
C114
C135
C139
C136
C143
C42
C1
C41
C3
C52
C154
C55
C35
C36
C27
C24
C2
C56
C212
X1
C140
C145 C144
R85
C76
C51
R233
R234
C169
VR2
VR1
C151
C166
R167
31
EB
X3
for
42
1
5
1
5
42
OGI
12 13
21
L7
L2
1
25
2
26
14
31
30
2
113 1 1 13
212
1
2
11
10
X2
X4
R151
C108
C107
C111
C106
C137
R107
R108 R10
R74
R73
R130
R131
R37
R38
R62
R61
R282
R281
R312
R309
R310
C4
C5
R308
R285
R307
R145
R146
R143
R144
R150
R149
R142
R137
R205
R206
C186
C62
C183
C184
C43
C77
C142
C70
C73
C237
C18
R19
C17
C238
C37
R20
R9
R7
R30
R31
R29
R27
R28
R22
R21
C38
R23
R24
C83
L4
C60
L1
R159
R257
C6
R194
R192 R191
R176
R175
R174
R173
R177
R178
R179
W11
R160
R180
C213
R242
R239
R42
R79
W2
R1
C141
C138
C19
R197
R198
C161
R238
R164
R311
C204
C203
R10
R321
R325
R243
R244
R326
R324
R323
C13
C241
C211
C112
C173
R256
C91
R113
R314
R156
R195
R196
E
B
B
E
B
E
R193
R75
1
21
22
42
1
100
81
80 51
50
31
30
18
9
16
54
28
27 1
4
1
8
5
18
4
5
IGO
4
11
13
115 113
S1
Q28
J2
IC2
J1
CN3
CN5 CN6
CN7 CN9
CN4 CN8 CN2
CN1
IC14
X29-2700-00 (J70-1405-11)
TUNER
SYSTEM CONTROLLER
CD DRIVER
SELECTOR & VOLUME
A1
IC3
IC4
MD I/O AMP.
IC5
CD DSP & DAC
E1
Q11
Q2
Q10
D21
IC11
D12
IC12
IC1
IC6
IC10
IC13
R
L
AUX
AM
GND
FM
R98
C23
R22 R33
R20
R32
R35
C20
C19
R18
R17
C35
C47
R38
C24
R37
R41
R42
R301
R302
R83 R82
R88
R78
R81 R85
R86
C50
R68
R84
R80
R76
R45
R24
C42
R46
C45
R44
R53
R52
R55
C48
C58
C46
R49
R50
R19
R23
R21 C31
R31
R39
R40
R10
R9
R77
C36
R75 C14
R8 R7
R5
R6
C68
C57
R69
R57
R60 R70
C53
R72
R71
C54
C67
C51
R56
R87
R79
R16
C5
R15
C6
R13
R14
R26
R25
R29
R30 R28
R27
C55
R11
R93
R90
R91
R1 R2
C40
C39
R4
R3
R92
R97
R96
R95
R94
C13
C41
C32
C60
C52
EB EB
EB EB
EB
EBEB
EB
EB
EB
EB
EB EB
Q5
Q4
Q8
Q6
Q16
Q10
D1
Q18
Q23
Q15
D2
Q17
D5
Q11
Q21
Q22
D6
D7
Lch
Rch
11
1
W22
W14
W18
W10
W23
W28
W25
W5
W15 W13
W32
W31
W17
W19
W40
W37
W7
W8
W30
W12
W6
W20
W21
W16
W24
W36
W26
W27 W29
W34
W33
W42
W41
W2
W9
W39
W35
W11
W38
W3
W4
W1
DOLBY IC
BIAS
EX IC
MECHA CONT.
PB LEVEL
PB & REC EQ IC
OSC
BIAS
Lch
Rch
R54
R47
R48
L6
C34
C44
C49
C33
R43
C43
C301
C37C38
R36
C59
L1
L2
C22
C21
C27
L5
R51
C28
C30
L4 L3
C11
C3
C12
VR2 VR1
C66
C9
C10
C29
C25
C26
C18
C8
C7
R12
C15
C4
C16
C17
W46
VR3
VR4
1
9
17
1
11
12 22
51
13
1
1
212
13
113 15
10
9
9
18
1
1
18
916
E
E
B
B
E
B
B
BEEB
E
E
B
E
B
WH1
IC4
Q12
Q1 Q2
CN3
E1 CN1
IC1
Q13
Q14
Q7
Q9
IC5
CN5
Q3
IC3
X28-3050-10 (J70-1407-01)
CN4
CN2
IC2
D3
D4
E3
E2
Refer to the schematic diagram for the value of resistors and capacitors.
PC BOARD(Component side view)
11 12
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
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