Marantz MR2020 User manual

system MR2020 / Layla 4822 725 51183
First Issue 1999.01
298J855010 MIT
Printed in Japan
Service
Manual
R
Please use this service manual with referring to the user guide ( D.F.U. ) without fail.
74 MR2020 /2G (Layla)
MR2020 F,K,KK,U
CD/Tuner System
TABLE OF CONTENTS
SECTION PAGE
MR2021 (CD/Tuner Amplifier)
1 TECHNICAL SPECIFICATIONS ............................................................................................................. 1-1
2-1 HOW TO DISASSEMBLE ....................................................................................................................... 2-1
2-2 REPAIR INTRODUCTION ...................................................................................................................... 2-6
2-3 EXPLANATION OF CIRCUITS ............................................................................................................... 2-6
3 SERVICE MODE ..................................................................................................................................... 3-1
4-1 BLOCK DIAGRAM .................................................................................................................................. 4-1
4-2 AM STEREO ADJ.(F ONLY) ................................................................................................................... 4-1
4-3 MICROPROCESSOR DATA ................................................................................................................... 4-1
5 WIRING DIAGRAM ................................................................................................................................. 5-1
6 SCHEMATIC DIAGRAM AND PARTS LOCATION................................................................................. 6-1
7B TUNER BOARD ECO5 .........................................................................................................................7B-1
7D TUNER 95 BOARD .............................................................................................................................. 7D-1
8 CD NAMI 8 BOARD................................................................................................................................. 8-1
9 EXPLODED VIEW AND PARTS LIST..................................................................................................... 9-1
10 ELECTRICAL PARTS LIST ................................................................................................................... 10-1
LS2021 ( Speaker System )
1 EXPLODED VIEW AND PARTS LIST.................................................................................................... 1-1
CAUTION
The System MR2020 (Layla) combines MR2021 (CD/Tuner Amplifier) with LS2021 (Speaker System).

MARANTZ DESIGN AND SERVICE
Using superior design and selected high grade components, MARANTZ company has created the ultimate in stereo sound.
Only original MARANTZ parts can insure that your MARANTZ product will continue to perform to the specifications for which
it is famous.
Parts for your MARANTZ equipment are generally available to our National Marantz Subsidiary or Agent.
ORDERING PARTS :
Parts can be ordered either by mail or by Fax.. In both cases, the correct part number has to be specified.
The following information must be supplied to eliminate delays in processing your order :
1. Complete address
2. Complete part numbers and quantities required
3. Description of parts
4. Model number for which part is required
5.Way of shipment
6. Signature : any order form or Fax.must be signed, otherwise such part order will be considered as null and void.
MARANTZ AMERICA, INC.
440 MEDINAH ROAD
ROSELLE, ILLINOIS 60172
USA
PHONE : 630 - 307 - 3100
FAX : 630 - 307 - 2687
LENBROOK INDUSTRIES LIMITED
633 GRANITE COURT,
PICKERING, ONTARIO L1W 3K1
CANADA
PHONE : 905 - 831 - 6333
FAX : 905 - 831 - 6936
MARANTZ EUROPE B.V.
P.O.BOX 80002
BUILDING SFF2
5600 JB EINDHOVEN
THE NETHERLANDS
PHONE : +31 - 40 - 2732241
FAX : +31 - 40 - 2735578
SUPERSCOPE TECHNOLOGIES, INC.
MARANTZ PROFESSIONAL PRODUCTS
2640 WHITE OAK CIRCLE, SUITE A
AURORA, ILLINOIS 60504 USA
PHONE : 630 - 820 - 4800
FAX : 630 - 820 - 8103
TC ELECTRONICS CANADA LTD.
540 FIRING AVE.
BAIE D’URFÉ, QUEBEC H9X 3T2
CANADA
PHONE : 514 - 457 - 4044
FAX : 514 - 457 - 5524
MK ENTERPRISES LTD.
2F SHINHAN BLDG., 247-17 SEOKYO-DONG
MAPO-KU, SEOUL
KOREA
PHONE : +82 - 2 - 323 - 2155
FAX : +31 - 2 - 323 - 2154
MARANTZ BRAZIL
CAIXA POSTAL 21462
CEP 04698-970
SAO PAULO, SP, BRAZIL
PHONE : 0800 - 123123
FAX : [phone]
PAl-YUING CO., LTD.
6 TH FL NO, 148 SUNG KIANG ROAD,
TAIPEI, 10429,TAIWAN R.O.C.
PHONE : [phone]
FAX : [phone]
MRZ STANDARD CO.,LTD.
746 - 754 MAHACHAI RD.,
WANGBURAPAPIROM, PHRANAKORN,
BANGKOK, 10200 THAILAND
PHONE : +66 - 2 - 222 - 9181
FAX : +66 - 2 - 224 - 6795
WO KEE HONG ELECTRONICS SDN. BHD.
NO. 102 JALAN SS 21/35, DAMANSARA
UTAMA, 47400 PETALING JAYA
SELANGOR DARUL EHSAN,
MALAYSIA
PHONE : +60 3 - 7184666
FAX : +60 3 - 7173828
MARANTZ JAPAN, INC.
35- I , 7- CHOME, SAGAMIONO
SAGAMIHARA - SHI, KANAGAWA
JAPAN 228-8505
PHONE : [phone]
FAX : [phone]
FORWARD MARKETING (S) PTE. LTD.
23, LORONG 8, TOA PAYOH,
SINGAPORE 319257.
PHONE : [phone]
FAX : [phone]
SHOCK, FIRE HAZARD SERVICETEST :
CAUTION : After servicing this appliance and prior to returning to customer, measure the resistance between either primary AC
cord connector pins ( with unit NOT connected to AC mains and its Power switch ON ), and the face or Front Panel of product and
controls and chassis bottom.
Any resistance measurement less than 1 Megohms should cause unit to be repaired or corrected before AC power is applied, and
verified before it is return to the user/customer.
Ref.UL Standard N0. 1492(DR700) and No. 813(CDR630).
USA CANADA EUROPE /TRADING
USA CANADA
BRAZIL
(Discagem Direta Gratuita)
TAIWAN
THAILAND
MALAYSIA
In case of difficulties, do not hesitate to contact the Technical
Department at above mentioned address.
JAPAN Technical SINGAPORE
98110MIT
SCAN AUDIO PTY. LTD.
52 CROWN STREET, RICHMOND 3121
VICTORIA
AUSTRALIA
PHONE : +61 - 3 - 9429 - 2199
FAX : +61 - 3 - 9429 - 9309
AUSTRALIA / NEW ZEALAND
KOREA

1. TECHNICAL SPECIFICATIONS
FMTuner
Frequency range............................................................................................................................................ 87.5 ~ 108.0 MHz
F only .................................................................................................................................... 76.0~ 90.0 MHz
Sensitivity ........................................................................................................................................................ 21.2 dBf / 3.2 µV
S/N (Mono/Stereo)..................................................................................................................................................... 75 / 43 dB
F only .......................................................................................................................................... 70 / 50 dB
THD (Mono/Stereo) ...................................................................................................................................................1.5 / 1.5 %
MWTuner
Frequency range............................................................................................................................................... 531 ~ 1602 kHz
U only ................................................................................................................................... 530 ~ 1700 kHz
Sensitivity ................................................................................................................................................................. 500 µV / m
/02, F only ............................................................................................................................................... 400 µV / m
S/N.................................................................................................................................................................................... 50 dB
LWTuner
Frequency range................................................................................................................................................. 153 ~ 279 kHz
Sensitivity ............................................................................................................................................................... 1800 µV / m
Amplifier
Music power................................................................................................................................................... 25 W + 25W (4Ω)
Input sensitivity (AUX) .......................................................................................................................................310 mV / 47 kΩ
U only ............................................................................................................................250 mV / 47 kΩ
S/N (AUX) ......................................................................................................................................................................... 85 dB
CD Player
Channels ................................................................................................................................................................. 2 channels
Frequency response ...............................................................................................................................20 ~ 20,000 Hz ± 3 dB
S/N....................................................................................................................................................................82 dB (1000 Hz)
THD ................................................................................................................................................................0.04 % (1000 Hz)
Output level...................................................................................................................................................................2 V RMS
General
Power supply
/02 version.................................................................................................................................................. AC 230 V, 50 Hz
F version .........................................................................................................................................AC 100 V, 50Hz / 60 Hz
K version ............................................................................................................................. AC 110V / 220V, 50Hz / 60 Hz
KK version.................................................................................................................................................. AC 220 V, 60 Hz
U version .................................................................................................................................................... AC 120 V, 60 Hz
Power consumption ............................................................................................................................................................25 W
Power failure backup time ...............................................................................................................................APPROX. 15 min.
Dimensions ................................................................................................................................ 450(W) x 104(H) x 308(D) mm
Weight............................................................................................................................................................................... 5.8 kg
Table top Speaker LS2021
Speaker
Mid-bass ............................................................................................................................................................................4”
Dome tweeter..................................................................................................................................................................3/4”
Input power
Rated ................................................................................................................................................................... 25 W (6Ω)
Max. ..................................................................................................................................................................... 40 W (6Ω)
Frequency response ...............................................................................................................................80 ~ 20,000 Hz ± 6 dB
Dimensions ................................................................................................................................ 190(W) x 200(H) x 100(D) mm
Weight............................................................................................................................................................................... 1.5 kg
Design and specifications are subject to change without notice.
1-1

2-1. HOWTO DISASSEMBLE MR2020
1.Take the bottom case (001G) apart
(1) Turn MR2020 upside down by the jig (Refer to fig.1-3).
Take care that the top cover will not damaged, especially
the 4 levers.If you don't have the jig, you prepare to put
some magazine or telephone guide under the MR2020
(The height is over 3cm books).
Fig.1 A jig for MR2020
(2) Remove 15 screws as shown in fig.4.
Fig.2 The jig on MR2020 Fig.3 Turning over the MR2020
2-1
Fig.4 Position of 15 screws

(3) While lifting the bottom case, remove the rear panel as
shown in fig.5-6.
Fig.5 Lifting the bottom case
(4) Remove the mains code bush as shown in fig.7.
Fig.6 Removing the rear panel
2-2
Fig.7 Removing the mains code bush

(5) Lift up the bottom case, remove the put the one with turning
to front side (Refer to fig.8).
Remark for reassemble
When you fit the bottom case, remove the lid of the bottom
case (Refer to fig.9) and confirm the arrangement of lead
lines for transformer.(Refer to fig.10).
Fig.9 Removing the lid of the bottom case Fig.10 Arrangement of lead lines
2-3
Fig.8 Taking the bottom case apart

2.Take the top panel (001D) apart
(1) Turn MR2020 upside down by the jig. (Refer to fig.1-3)
Take care that the top cover will not damaged, especially
the 4 levers. If you don't have the jig, you prepare to put
some magazine or telephone guide under the MR2020.
(The height is over 3cm books)
(2) Push the rear panel while keeping hold the top cover (see
fig.11 below).The top cover will move 5mm.(fig.12-13)
Now, 4 screws on the top cover will become accessible.
(fig.14) Take out these screws. (M3 type screw)
Fig.11 Pushing the rear panel
Fig.13 Pushed the rear panel
Fig.12 Before pushing the rear panel
Fig.14 Positions of 4 screws
2-4

(3) Turn the MR2020 to its normal operating position.
(4) Open the top cover of MR2020 by hand.
(5) Take out the 2 screws (M2 type screw) on the top (see
fig.15).
(6) The upper part and lower part of the top cover are
connected to each other with adhesive tape. Separate
these parts by pushing the transparent upper part in the
middle (on CD shaped part) from the lower part, while
holding the lower part.
(7) The upper part and lower part of the top cover were
separated (See fig.16-17).
Fig.16 The upper part of top cover (the reverse side)
Fig.17 The lower part of top cover and the others
2-5
Fig.15 Positions of 2 screws on the top

2-2.REPAIR INTRODUCTION
PREPARATION FOR CD BLOCK
1. Set a disc for repair into product.
2. Turn the product upside down on the jig (Parts
No.*MR2021JIG).Take care that the top cover will not
damaged, especially the 4 levers. (Refer to "How to
disassemble MD2020")
3. For the top panel will not open while repairing, remove
the connecting wires of panel motor from the connector
(J812).
4. Repair and operate it on the upside down position of
the product.
PREPARATION FOR MAIN AMPLIFIER PCB (P704)
1. Main amplifier is BTL output.
2. For removing the main amplifier PCB (P704) from the
product, remove the wire (W802) from the terminal
(WU02) of microprocessor PCB (PU04). Connect
another wire with terminal (WU02) and GND as chassis
instead of the wire (W802).
REMARK
Remove the bottom case from the product, Do not output
signals of over 1W from both channels more than 10
minutes continuously.
2-3.EXPLANATION OF CIRCUITS
FAN OPERATION
The voltage added to the diode (D852) is depended on
the resistance of the thermistor (R857) and resistors
(R855,R858). When the temperature of the heat sink
goes up, the resistance of the thermisor (R857)
decreases, and the voltage added to the diode (D852)
increases.
1. When the temperature of the heat sink is over 70
degrees Celsius, then D852 is on, through R852, Q851
is on, and the fan starts to revolve.
2. When the temperature of the heat sink is approx.100
degrees Celsius or more, through R853, Q853 is on,
and the product is STAND-BY status. But, if the fan
revolve normally, the temperature of the heat sink will
not be over 100 degrees Celsius and not be STAND-
BY status.Therefore, the procedure of the over heat
protection circuit check is as follows;
(1) Connect the test point (J814) with a resistor of 680
ohm.
(2) If the product is STAND-BY status, this circuit is normal.
(3) Remove the resistor of 680 ohm from the test point
(J814).
FAN OPERATION CHECK
Keep outputting 2.5W from both channels of the product.
2-6

When the bottom case is closing. If the fan revolving starts
within 10 minutes, the function is correct working.
Otherwise keep outputting 1W from both channels of the
product when the bottom case is opening.If the fan revolving
starts within 5 minutes, the function is correct working.
REMARK
Do not output over 1W when the bottom case is open.
VCC CONTROL
The regulation of primary voltage is not so higher
intentionally for decreasing the no-load loss.Therefore, this
circuit is used for the product to keep the voltage tolerance
of the power IC.This circuit do not work when the output is
from 0 to approx. 1Vrms.ThenVCC is supplied from D709
only. When the output is more than 1Vrms, through D701-
D704, R722, D706, and Q703 is on, current is supplied
from Q702.When the output is over approx. 3Vrms, D709
is off, and VCC is supplied from Q702 only.
SPEAKER PROTECTION
1. When either terminal of BTL outputs connect with GND
(chassis) by mistake, the speaker protection circuit will
work as follows. through R707-R710, Q704 or Q705 is
on, and Q706 is on.Then #5Pin for Q701 is 0V, power IC
(Q701) will be in power off.Therefore, the product will be
STAND-BY status.
2. When the VCC CONTROL circuit is working correctly,
maximum current of R825 is 1A, and voltage between
R825 load is maximum 0.33V.When both terminals of BTL
outputs are shorted on outputting over 0.25W, R825 is
supplied over 2A, Q807 and Q803 is on, and the product
will be STAND-BY status.
CD 5V ON/OFF CONTROL
The voltage for CD (CD 5V) is supplied from QX04 when
the following conditions are satisfied fully. (for noise and
laser protection)
1. Setting a disc on the product, and QU08 is on.
2. Closing top panel, and #78Pin for QU10 is 0V.
3. The product is in CD mode.
MUTE CONTROL
Mute signals output from microprocessor (QU10) are
"MUTE (Pin No.37)", "MUTE2 (Pin No.7)", and "DSC MUTE
(Pin No.5)".
Fig.1 is workable output terminals by each mute signals,
Fig.2 is the status of each mute.
2-7
Fig.1
Q701(SPK) QN01-QN04
(PHONE) QX05,QX06 (SUB WOOFER) QX07,QX08 (LINE OUT) QE01
MUTE YES YES YES NO NO
MUTE2 NO NO
DSC MUTE NO NO NO NO YES
NO
YESNO

TOP PANEL OPEN SENSOR
1. The pulse (T=84msec, Duty 50%) is always added to LED
(QU15), from #30Pin of QU10, through RF28 and QU22.
2. Cover the sensor with your fingers, the collector voltage
of QU01 goes up over 0.7VP-P. and through RU71 and
QU09, the pulse of 5VP-P inputs to #29Pin of QU10.Then
the top panel will open.
3. Not needing to cover the sensor with your fingers, QU01
receives the light of LED reflected by lens oneself.
Therefore, the collector of QU01 adds the reverse pulse
through RF29, QU26 and RF32, for reduced incorrect
working.So, the voltage of residual pulse for the collector
of QU01 is suppressed to 0.1VP-P.
REMARK
When the sensor receives sunlight or a strong light as
incandescent, top panel might open.
POPS NOISE KILLER
RX72, CX70 and QX70 are the circuit to delay power supply
for approx.2 seconds.Therefore, this circuit prevents pops
noise generation when power switch is on or off.
SUBWOOFER
Sub woofer output is composed a low pass filter of cut-off
frequency 150Hz octave 12dB. It is output 2V for AUX L,R
input 60Hz, 200mV (volume is maximum).
REMARK
Sub woofer output level is depended on volume control.
2-8
Fig.2
POWER
ON/OFF CD MODE STOP OR TRACK JUMP MUTE BUTTON ON MODE CHANGE VOLUME MINIMUM
MUTE YES YES YES YES YES
MUTE2 YES YES NO YES NO
DSC MUTE NO YES NO NO NO

3 SERVICE MODE
1. How to set the service mode
(1) While holding the CLOCK and CLEAR buttons together,
put the mains plug to mains outlet.
(2) FL check mode will start.
(3) While in FL check mode, each time the FUNCTION button
pressed (within 2 seconds), the mode changes in the
following order.
TR FREQ (Tracking point frequency memory mode) ➛
CDTEST (CD test mode) ➛ FL CHK (FL check mode) ➛
TR FREQ (Tracking point frequency memory mode)
2. FL CHECK MODE
FL check mode will continue until change other mode.
3.TRACKING POINT FREQUENCY MEMORY MODE
This mode is not available for repair(This is for check in
factory.). If you set in this mode, some frequencies will
register in each preset memory.
REMARK
User programmed frequencies will be deleted.
While inTracking point frequency memory mode, press the
MEMO button.Press the CLEAR and the DISPLAY buttons
together.The display shows “CLEAR” 2 seconds.Then all
memories will be clear.
4. CDTEST MODE
(1) Press the“+” button, then the sledge move to the outside.
Press the “-” button then the sledge move to the inside.
Press the CLEAR button while the sledge is moving, then
the sledge stop.
(2) Press the MEMO button, then the laser pick up unit is
giving out the beam. Press the MEMO button again then
the laser pick up unit stop beam out. All operations are
available without the Disc.
(3) While in CD test mode, CD play is available in opening
the top panel.
(4) Ifany ERROR is happened,thedisplay shows“CD ERRX”.
(X is a ERROR code.) The ERROR message will not be
clear until pressing STOP or POWER buttons.
Error Code Description
1 The sledge switch not turn on.
2 The sledge switch not turn off.
3 The laser pick up unit not focus.
4 The tracking is not fixed.
5 The spindle motor not locked.
5. How to stop the service mode
Press the POWER button.Then product will be in POWER
OFF (STAND-BY).
REMARK
The microprocessor will not be clear by this operation.
(Refer to "3.TRACKING POINT FREQUENCY MEMORY
MODE")
3-1

4-1 4-1
4-1 BLOCK DIAGRAM
DECODER/
U-COM
SAA7372
SERVO
DRIVER
TDA7073AT
HF AMP
TDA1300T
CD UNIT CD94V5B1
SLED
MOTOR
SPINDLE
MOTOR
PICK UP
FOCUS
PRE AMP
TE6321 H.P AMP
NJM4556
E.Q
BUFFER
NJM4558
POWER
AMP
AN7125
MAIN U-COM
F1(FL)
+8V,+5V
SUPPLY
SERVO
DRIVER
TDA7073AT
TRACK
TUNER 95
ECO 5
RDS
/02 ONLY
FL
DRIVER
BUFFER
NJM4558
TEMP
DETECT M
FL
PANEL
DRIVE
IC
PQ30RV2 PQ05RF2
7808
PQ12RF2
2SA1307
+5V(CD)
+5V(U-COM)
+9.3V(POWER AMP)
+8V(CD)
+12V(PANEL MOTOR)
-26V(FL)
F2(FL)
+10V
+21V
+20V
AUX
IN LINE OUT SUB W.F
DISC
SENSOR(CD)
PANEL
OPN/CLS ON TOP
KEY BOTTOM KEY
DISPLAY
PANEL
PHOTO
SENSOR
R.C
FAN
MOTOR
H.P(SW)
S.P
ANT.
A/D INPUT
RC5
U-COM
U-COM
U-COM
+5V
I2C
DAC
ANALOG
CD BOARD NAMI 8
AM STEREO
F ONLY
Pin No. Pin Name Signal Name I/O Active Slow Function
1 P10 (INT0) _POW_DWN INT L POWER DOWN
2 P11 (INT1) _STANDBY OUT L L POWER STANDBY
3 P12 (INT2) SDA IN/OUT - IIC SDA(for RDS,DSC)
4 P13 (DVO) SCL OUT H L IIC SCL(for RDS,DSC)
5 P14 DSC_MUTE OUT L L DSC MUTE
6 P15 _CD_STANDBY OUT L L CD STANDBY
7 P16 _MUTE2 OUT L L LINE MUTE
8P17 * IN - -N.C
9 TEST - IN - - GND
10 P21 (XTIN) 32.768kHz IN - - SUB X-TAL
11 P22 (XTOUT) 32.768kHz OUT - - SUB X-TAL
12 RESET _RESET IN L - RESET
13 XIN 8.0MHz IN - - X-TAL
14 XOUT 8.0MHz OUT - - X-TAL
15 VSS - GND - - GND
16 P20 (INT5) _HOLD IN L - HOLD IN
17 P30 (INT3) _RCIN INT - RC-5 BUS IN
18 P31 _RCOUT OUT L L RC-5 BUS OUT
19 P32 (SCK) TUNE_CLK OUT H L TUNER CLK
20 P33 (SI) _TUNE_WE OUT L - TUNER WRITE ENABLE
21 P34 (SO) TUNE_SDA IN/OUT H L TUNER SDA
22 P35 (HSCK) TUNER_ST_M ON IN H L TUNER STEREO/MONO
23 P36 CD7_RESET OUT L L CD7 RESET
24 P37 (HSO) DISC_IN IN H - DISC IN SENSOR
25 P00 SILD OUT L L CD7 CONTROL
26 P01 RAB OUT H L CD7 CONTROL
27 P02 SCL OUT H L CD7 CONTROL
28 P03 SDA IN/OUT H L CD7 CONTROL
29 P04 P_SEN_IN IN H - PANEL SENSOR IN
30 P05 P_SEN_OUT OUT H L PANEL SENSOR OUT
31 P06 P_MOTOR_P OUT H L PANEL MOTOR +
32 P07 P_MOTOR_N OUT H L PANRL MOTOR -
33 VDD +5V +5VS - - VDD
34 P60 (G15) * IN - - N.C
35 P61 (G14) * IN - - N.C
36 P62 (G13) AMPON OUT H L AMP POWER ON
37 P63 (G12) MUTE OUT H L MUTE
38 P64 (G11) _RDS_ON OUT H L RDS_POWER
39 P65 (G10) 11G OUT H - DIGIT OUT
40 P66 (G9) 10G OUT H - DIGIT OUT
Pin No. Pin Name Signal Name I/O Active Slow Function
41 P67 (G8) 9G OUT H - DIGIT OUT
42 P70 (G7) 8G OUT H - DIGIT OUT
43 P71 (G6) 7G OUT H - DIGIT OUT
44 P72 (G5) 6G OUT H - DIGIT OUT
45 P73 (G4) 5G OUT H - DIGIT OUT
46 P74 (G3) 4G OUT H - DIGIT OUT
47 P75 (G2) 3G OUT H - DIGIT OUT
48 P76 (G1) 2G OUT H - DIGIT OUT
49 P77 (G0) 1G OUT H - DIGIT OUT
50 P80 (S0) P16 OUT H - SEGMENT OUT
51 P81 (S1) P15 OUT H - SEGMENT OUT
52 P82 (S2) P14 OUT H - SEGMENT OUT
53 P83 (S3) P13 OUT H - SEGMENT OUT
54 P84 (S4) P12 OUT H - SEGMENT OUT
55 P85 (S5) P11 OUT H - SEGMENT OUT
56 P86 (S6) P10 OUT H - SEGMENT OUT
57 P87 (S7) P9 OUT H - SEGMENT OUT
58 P90 (S8) P8 OUT H - SEGMENT OUT
59 P91 (S9) P7 OUT H - SEGMENT OUT
60 P92 (S10) P6 OUT H - SEGMENT OUT
61 P93 (S11) P5 OUT H - SEGMENT OUT
62 P94 (S12) P4 OUT H - SEGMENT OUT
63 P95 (S13) P3 OUT H - SEGMENT OUT
64 P96 (S14) P2 OUT H - SEGMENT OUT
65 P97 (S15) P1 OUT H - SEGMENT OUT
66 VKK -B - - - Power Supply for FL
67 P40 (KEY0) Key0 IN H - Key0
68 P41 (KEY1) Key1 IN H - Key1
69 P42 (KEY2) Key2 IN H - Key2
70 P43 (KEY3) Key3 IN H - Key3
71 P44 (KEY4) Key4 IN H - Key4
72 P45 (KEY5) Key5 IN H - Key5
73 P46 (KEY6) Key6 IN H - Key6
74 P47 (KEY7) Key7 IN H - Key7
75 P50 (A/D) _DAVN IN L - RDS DAVAN
76 P51 (A/D) _PSWN IN L - RDS PSWN
77 P52 (A/D) _P_OPEN IN L - PANEL SW OPEN
78 P53 (A/D) _P_CLOSE IN L - PANEL SW CLOSE
79 P54 VER_SET0 IN - - 0:J 1:U10 0:U 09 1EU
80 P55 VER_SET1 IN - - 0: 0: 1: 1:
:F :U :K,KK : /2
4-3 MICROPROCESSOR DATA

5-1 5-1
5.WIRING DIAGRAM
NAMI 8
TUNER 95
or ECO 5
F ONLY
CD94V5B1

6-1 6-1
6. SCHEMATIC DIAGRAM AND PARTS LOCATION
PHONE
WU09
(FROM JU01)

6-2 6-2
SPEAKER
OUT
/02
/02
/02
002M

6-3 6-3
P704 Q708 Q707 Q701
Q705 Q704 Q706 Q703
Q702 Q801 Q805 Q806
Q852 Q851 Q803 Q807
QD01 Q853
PX04
QX70
QN03 QN01 QH01
QN04 QN02 QE04 QE03
QX07 QX03 QX08 QE04 QE02
QX04 QX01 QX02 QX05 QX06 QX09
P804
PH04
PX54

PS64
/02
/02
/02
CD BOARD
NAMI 8
TUNER BOARD
TUNER 95
or ECO5
6-4 6-4

PU04 QU12 QU13 QU14 QU15
QU04 QU03 QU08
QU22 QU26 QU09
QU28 QU27
QU25 QU24 QU23
QU10 QU21 QU16 QU17 1U28
QU06 QU07 QU05
QU18 QU19 QU20 QF51
PS04 PS14
PS54
6-5 6-5

AM STEREO
[F] VERSION
TUNER
BOARD
ECO 5
From
1131
PA01 QA01 QA04 QA03 QA02
6-6 6-6