Technics SUA-707 Service manual

Table Of Contents

COVER

1 Before Repair

2 Protection Circuitry

3 Accessories

4 Caution for AC Mains Lead

5 Operations

6 Operation Checks and Component ReplacementProcedures

7 About the+/- 15 V Line Abnormality Detect Function

7.1 About the abnormality detect function with the operation LED turned off

8 Schematic Diagram

8.1 Schematic Diagram Notes

8.2 Schematic Diagram

9 Printed Circuit Board Diagram

10 Wiring Connection Diagram

11 Type Illustration of ICs, Transistors and Diodes

12 Block Diagram

13 Measurements and Adjustments

13.1 Measuring Instruments and Special Tools

13.2 Output Voltage Adjustment

14 Terminal Function of ICs

PV

PV

14.1 IC801 (M38503M2405F) : System Control

15 Replacement Parts List

16 Cabinet Parts Location

17 Packaging

Service Manual

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AD9908184C2

Stereo Integrated Amplifier

SU-A707

Colour

(K)...............Black Type

Areas

(E)...............Europe and Russia.

(EB)............Great Britain.

(EG)............Germany, France and Italy.

© 1999 Matsushita Electric Industrial Co., Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law.

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1 Before Repair

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1. Turn off the power supply. Using a 10Ω, 10 W resistor, connect both ends of power supply

capacitors (C701, C702) in order to discharge the voltage.

2. Before turning the power supply on, after completion of repair, slowly apply the primary
voltage by using a power supply voltage controller to make sure that the consumed current at
50 Hz in NO SIGNAL mode should be shown below with respectto supply voltage 230/240 V.

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Power supply
voltage

Consumed current 70-270 mA 60-260 mA

AC 230 V, 50

Hz

AC 240 V, 50

Hz

2 Protection Circuitry

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The protection circuitry may have operated if either of the following conditions is noticed:

No sound is heard when the power is switched ON.

Sound stops during a performance.

The functions of this circuitry is to prevent circuitry damage if, for example, the positive and negative
speaker connection wires are shorted, or if speaker systems with an impedance less than the indicated
rated impedance of this unit are used.

If this occurs, follow the procedure outlined bellow:

1. Switch OFF the power.

2. Determine the cause of the problem and correct it.

3. Switch ON the power once again.

Note:

When the protection circuitry functions, the unit will not operate unless the power is first switched
OFF and ON again.

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3 Accessories

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AC mains lead

(E) and (EG) areas : (RJA0019-X)......... 1 pc.

(EB) area : (RJA0053-2X)........................1 pc.

Remote control transmitter

(RAK-SUA11WH).............................................1 pc.

Batteries

(R6/LR6, AA, UM-3).............................................2 pcs.

Note: These are available on sales route.

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4 Caution for AC Mains Lead

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5 Operations

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6 Operation Checks and Component
Replacement/Procedures

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7 About the+/- 15 V Line Abnormality Detect
Function

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1. This model features the function that shuts down the main power source when it check the± 15
V line with the IC801 (microcomputer) and find the different voltage. (After power is turned
on, the unit enters the stand-by mode.)

2. When the unit enters stand-by mode with abnormality detected, check the circuits around the±
15 V line. (Specially check the abnormality of the stabilizing power source circuit.)

3. To clear this stand-by mode, short-circuit the TP801 land on the circuit board. However,
clearance of the stand-by mode and turn on the electricity when the repair is not completed
may lead to another trouble. Therefore, be especially carefulto do so. (Do not turn on the
electricity for a long time.)

4. When the repair is completed, leave the TP801 open.

7.1 About the abnormality detect function with the operation LED turned off

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7.1 About the abnormality detect function with
the operation LED turned off

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1. If the operation LED is turned off, there are possibilities of the following abnormalities in
addition to the LED itself malfunctioning:

2. Power amplifier´s malfunction by the speaker terminal short-circuit.

3. Malfunction of cooling fan.

The unit features the function that detects above abnormalities.

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8 Schematic Diagram

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8.1 Schematic Diagram Notes

8.2 Schematic Diagram

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8.1 Schematic Diagram Notes

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This schematic diagram may be modified at any time with the development of new technology.

Notes:

S204:

Unit on/off switch (/I)

S801:

Input select switch (TAPE 1)

S802:

Input select switch (TAPE 2/MD)

S803:

Input select switch (AUX)

S804:

Input select switch (DVD)

S805:

Input select switch (CD)

S806:

Input select switch (TUNER)

S807:

Input select switch (PHONO)

S808:

VGCA switch ()

S809:

Tape monitor (SOURCE) switch (TAPE MONITOR)

S810:

Tape monitor (TAPE 2/MD) switch (TAPE MONITOR)

S811:

Tape monitor (TAPE 1) switch (TAPE MONITOR)

S812:

Speaker select switch (SPEAKER B)

S813:

Speaker select switch (SPEAKER A)

VR201:

Volume control VR (VOLUME)

VR202:

Balance control VR (BALANCE)

VR203:

Output voltage adjustment VR (L ch)

VR204:

Output voltage adjustment VR (R ch)

VR301:

Tone control VR (BASS)

VR302:

Tone control VR (TREBLE)

Indicated voltage values are the standard values for the unit measured by the DC electronic circuit
tester (high-impedance) with the chassis taken as standard. Therefore, there may exist some errors in
the voltage values, depending on theinternal impedance of the DC circuit tester.

No mark : Power ON

Important safety notice:

Components identified by

Furthermore, special parts which have purposes of fire-retardant (resistors), high-quality sound
(capacitors), low-noise (resistors), etc. are used.

When replacing any of components, be sure to use only manufacturers specified parts shown in the
parts list.

Caution!

IC and LSI are sensitive to static electricity.

Secondary trouble can be prevented by taking care during repair.

Cover the parts boxes made of plastics with aluminum foil.

Ground the soldering iron.

mark have special characteristics important for safety.

Put a conductive mat on the work table.

Do not touch the legs of IC or LSI with the fingers directly.

Voltage and signal line

: Positive voltage line

: Negative voltage line

: Phono signal line

: Tape rec signal line

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8.2 Schematic Diagram

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9 Printed Circuit Board Diagram

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10 Wiring Connection Diagram

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11 Type Illustration of ICs, Transistors and
Diodes

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12 Block Diagram

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13 Measurements and Adjustments

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13.1 Measuring Instruments and Special Tools

13.2 Output Voltage Adjustment

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13.1 Measuring Instruments and Special Tools

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AC electronic voltmeter (AC EVM)

AF oscillator

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13.2 Output Voltage Adjustment

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1. Turn on the power.

2. Select the input source to TUNER.

3. Connect the measuring instrument as shown

4. Apply 1 kHz, 100 mV to TUNER terminal.

5. Adjust the VOLUME to maximum.

6. Adjust VR203 (L ch) and VR204 (R ch) so that the output voltage to AC 14.0± 0.2 V. Shown in

Fig.1

Fig.1

Fig.2

Adjustment point

Fig.2

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14 Terminal Function of ICs

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14.1 IC801 (M38503M2405F) : System Control

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14.1 IC801 (M38503M2405F) : System Control

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Pin
No.

1
2 VREF I Reference voltage input
3 AGND - GND terminal
4 MUTE LED O LED drive signal output (Mute)
5 STBY LED O LED drive signal output (Stand by)
6 REMCON I Remote control signal input
7 BACKUP I Power failure detect signal input
8 NC - Not used, connected to GND
9 SEL DATA O Data signal output for input select IC (IC201)

10 SEL CLK O

Name

VCC

I/
O

Power supply terminal

I

Clock signal output for input select IC
(IC201)

Function

11 SEL STB O

12 POWER SW I Power switch (S204) detect signal input
13 LED O - Not used, open
14 LED C O Input select LED drive signal output
15
16 LED B O Input select LED drive signal output
17 LED A O Input select LED drive signal output
18 RESET I System reset signal input
19 X IN I Connected to the ceramic oscillator (8 MHz)
20 X OUT O Connected to the ceramic oscillator (8 MHz)
21 GND - GND terminal
22 TAPE2 LED O LED drive signal output (Tape 2)

CNVSS

Strobe signal output for input select IC
(IC201)

Connected to GND

-

23 TAPE1 LED O LED drive signal output (Tape 1)
24

SOURCE

LED

O LED drive signal output (Source)

25 SP B LED O LED drive signal output (Speaker B)
26 SP A LED O LED drive signal output (Speaker A)
27 VRDOWN O Motor drive signal output (Volume down)
28 VRUP O Motor drive signal output (Volume up)
29 S MUTE O Audio muting control signal output
30 POWER O Power relay control signal output
31 SP B RLY O Speaker B relay control signal output
32 SP A RLY O Speaker A relay control signal output
33 VGCA RLY O VGCA mode relay control signal output
34 TAPE1 RLY O Tape 1 relay control signal output
35 DVD RLY O DVD relay control signal output
36 CD RLY O CD relay control signal output
37 MON RLY O Monitor relay control signal output
38 VGCA LED O LED drive signal output (VGCA mode)
39 VIA LED O LED drive signal output (VIA mode)
40 REG MON I Regulation monitor signal input
41 KEY AD2 I Operation key signal input
42 KEY AD1 I Operation key signal input

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15 Replacement Parts List

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Notes:

Important safety notice:

Components identified by

Furthermore, special parts which have purposes of fire-retardant (resistors), high-quality sound
(capacitors), low-noise (resistors), etc. are used.

When replacing any of components, be sure to use only manufactures specified parts shown in the
parts list.

The<IA> <IB> <IC> <ID> marks in Remarks indicate language of instruction manual.

<IA> : English, Spanish, Swedish, Russian, Polish, Czech

<IB> : English

<IC> : German, Italian, French

<ID> : Netherlandish, Danish

mark have special characteristics important for safety.

The parenthesized indications in the Remarks columns specify the areas. (Refer to the cover page for
area.)

The marking (RTL) indicates that Retention Time is Limited for this item. After the discontinuation
of this assembly in production, the item will continue to be available for a specific period of time.
The retention period of availabilityis dependent on the type of assembly, and in accordance with the
laws governing part and product retention. After the end of this period, the assembly will no longer
be available.

All parts are supplied by MESA.

Ref. No. Part No. Part Name& Description Pcs. Remarks

1 RKM0219F-K TOP CABINET 1
2 RHD30035-K1 SCREW 4

3 RMR1110-K SP TERMINAL COVER 8 (EB)
4 XTBS3+8JFZ1 SCREW 2
5 RDG0438 GEAR 1
6 REM0072-3 FAN 1
7 RHD30070 SCREW 1
8 XTB3+6G SCREW 4
9 XTB3+6JFZ SCREW 4
10 RKA0053-A FOOT 4
10-1 RMG0270-K RUBBER 4
11 RMG0332-K RUBBER 2
12 XTB3+8JFZ SCREW 2
13 RGK1111-K NUT 4
14 RHD26033 SCREW 4
15 RKF0596-Q DOOR 1
16 RMR1252-K ARM(L) 1
17 RMR1253-K ARM(R) 1
18 RGB0031-A TECHNICS BADGE 1
19 RGB0112-N VGCA BADGE 1
20 RGH0155B-K PANEL SHEET 1
21 RGK1182-N BUTTON ORNAMENT 1
22 RGK1184-S VOLUME RING 1
23 RGL0453-Q PANEL LIGHT 1 1
24 RGL0456-Q PANEL LIGHT 2 1
25 RGL0457-Q PANEL LIGHT 3 1
26 RGP0746B-K PANEL 1
27 RGU0890-1K BUTTON,POWER 1
28 RGU1712-K BUTTON,OPEN 1
29 RGU1782-K BUTTON,SELECTOR 1
30 RGU1784-S BUTTON,SPEAKER 1
31 RGW0285-S KNOB,TONE 3
32 RGW0325-K KNOB,VOLUME 1
33 RHD26016 SCREW 2
34 RHD26034 SCREW 1
35 RHN90001 NUT 1

36 RKG0009 MAGNET 1
37 RKW0273A-K FILTER 1
38 RME0284 SPRING 1
39 RMR1254-K LEVER 1
40 RMR1261-K HOLDER 1
41 XTBS26+8J SCREW 26
42 XTBS3+8JFZ1 SCREW 22
43 XTW3+15T SCREW 5
44 XTB3+20JFZ SCREW 8

A1 RAK-SUA11WH REMOTE CONT.TRANSMITTER 1
A1-1 RKK0123-K BATTERY COVER 1
A2 RJA0019-X AC POWER SUPPLY CORD 1 (E,EG)/

A2 RJA0053-2X AC POWER SUPPLY CORD 1 (EB)/

A3 RQA0117 WARRANTY CARD 1

A4 RQCB0169 SERVICE CENTER LIST 1
A5 RQT5113-E OPERATING INSTRUCTIONS 1 (E)/<IA>
A6 RQT5116-B OPERATING INSTRUCTIONS 1 (EB)/<IB>
A7 RQT5114-D OPERATING INSTRUCTIONS 1 (EG)/<IC>

A8 RQT5115-H OPERATING INSTRUCTIONS 1 (EG)/<ID>

C103,04 ECBT1H181KB5 50V 180P 2
C107,08 ECEA1CKS101 16V 100U 2
C109,10 ECBT1H391KB5 50V 390P 2
C113,14 ECQB1H223JF3 50V 0.022U 2
C115,16 ECQB1H562JF3 50V 5600P 2
C117,18 RCE1HKA4R7BG 50V 4.7U 2
C119,20 ECQB1H472JF3 50V 4700P 2
C121,22 ECBT1E103ZF 25V 0.01U 2
C123,24 RCE1HKA3R3BG 50V 3.3U 2
C201-16 ECCR1H101K5 50V 100P 16
C251,52 ECEA0JKS101 6.3V 100U 2
C253,54 ECQV1H104JM3 50V 0.1U 2
C301,02 RCE1HKA3R3BG 50V 3.3U 2
C303,04 ECCR1H101K5 50V 100P 2
C305,06 ECBT1H820KB5 50V 82P 2

C307,08 RCE1HKA4R7BG 50V 4.7U 2
C309,10 ECBT1H390J5 50V 39P 2
C311,12 RCE1CKA100BG 16V 10U 2
C313,14 ECQV1H823JZ 50V 0.082U 2
C315,16 ECQB1H153JF3 50V 0.015U 2
C317,18 ECQB1H183JF3 50V 0.018U 2
C319,20 ECQB1H222JF 50V 2200P 2
C321,22 ECBT1E223ZF 25V 0.022U 2
C323,24 ECBT1H121KB5 50V 120P 2
C351,52 ECA1EPXS100B 25V 10U 2
C353,54 ECBT1H101KB5 50V 100P 2
C355,56 ECA1APXS470B 10V 47U 2
C357,58 ECBT1H820KB5 50V 82P 2
C359,60 ECBT1H180J5 50V 18P 2
C361-64 ECA1EPXS100B 25V 10U 4
C367,68 ECA1CPXS330B 16V 33U 2
C369,70 ECA1EPXS100B 25V 10U 2
C401,02 ECA1CPXS470B 16V 47U 2
C403,04 ECKR1H121KB5 50V 120P 2
C405,06 ECA1APXS101B 10V 100U 2
C407,08 ECBT1H820KB5 50V 82P 2
C409,10 ECCR2H330J5 500V 33P 2
C413,14 ECCV2H070D 500V 7P 2
C415,16 ECBT1H102KB5 50V 1000P 2
C426 ECBT1H102KB5 50V 1000P 1
C427 ECBT1E223ZF 25V 0.022U 1
C428 ECKR1H103ZF5 50V 0.01U 1
C451,52 ECKR1H333ZF5 50V 0.033U 2
C453-56 ECCV2H680K 500V 68P 4
C457-60 RCE1HKA3R3BG 50V 3.3U 4
C461,62 ECBA1H681KB5 50V 680P 2
C501-04 ECA1APXS101B 10V 100U 4
C505,06 ECQV1H473JM3 50V 0.047U 2
C507 ECEA1CKS101 16V 100U 1
C508 ECA1HM470 50V 47U 1
C509 ECEA1HN100SB 50V 10U 1
C511,12 ECBT1H680J5 50V 68P 2

C513-18 ECQV1H473JM3 50V 0.047U 6
C519-22 ECQB1H223JF3 50V 0.022U 4
C523,24 ECBT1H102KB5 50V 1000P 2
C525,26 ECQB1H152JF3 50V 1500P 2
C531,32 ECBT1C332KR5 16V 3300P 2
C601,02 RCE1CKA100BG 16V 10U 2
C603 ECEA0JKS101 6.3V 100U 1
C604 ECEA1HSN010 50V 1U 1
C605 ECEA0JKS331 6.3V 330U 1
C701,02 ECESX1H822UM 50V 8200U 2

C705 ECBT1H104KB5 50V 0.1U 1
C707,08 ECA1HPXS100B 50V 10U 2
C709,10 ECKR2H103ZU 500V 0.01U 2
C711 ECQE2104KF3 250V 0.1U 1
C712 ECBT1E103ZF 25V 0.01U 1
C714 ECA1CM471 16V 470U 1
C715 ECBT1E103ZF 25V 0.01U 1
C716 RCE1CM102BV 16V 1000U 1
C751,52 ECA1EPXS470B 25V 47U 2
C787,88 ECKR1H103ZF5 50V 0.01U 2
C793,94 ECEA1EKA470B 25V 47U 2
C801-03 ECBT1E103ZF 25V 0.01U 3
C804 ECA0JM102 6.3V 1000U 1
C805 RCE1HKAR47BG 50V 0.47U 1
C806 ECEA1HKS2R2 50V 2.2U 1
C807 ECBT1H102KB5 50V 1000P 1
C808 ECBT1E103ZF 25V 0.01U 1
C809,10 RCE1AKA470BG 10V 47U 2
C811 ECBT1H101KB5 50V 100P 1
C812,13 ECKR1H103ZF5 50V 0.01U 2
C814,15 ECA1CPXS100B 16V 10U 2
C816 RCE1CKA100BG 16V 10U 1
C817 RCE1AKA470BG 10V 47U 1
C820 ECQV1H224JM3 50V 0.22U 1

CN201 RJU003K010M1 CONNECTOR(10P) 1
CN202 RJU003K008M1 CONNECTOR(8P) 1

CN301 ,02 RJU003K008M1 CONNECTOR(8P) 2
CN401 RJU057W004 CONNECTOR(4P) 1
CN601 SJT3213 CONNECTOR(2P) 1
CN702 RJS1A6607T1 CONNECTOR(7P) 1
CN703 RJS1A6603 CONNECTOR(3P) 1
CN704-11 RJS1A1101T1 CONNECTOR(1P) 8
CN801, 02 RJU003K008M1 CONNECTOR(8P) 2
CN803 RJU071H11M CONNECTOR(11P) 1
CN805 RJU071H11M CONNECTOR(11P) 1

CP201 RJT003K010-1 CONNECTOR(10P) 1
CP202 RJT003K008-1 CONNECTOR(8P) 1
CP301 ,02 RJT003K008-1 CONNECTOR(8P) 2
CP401 RJT057W004-1 CONNECTOR(4P) 1
CP801 ,02 RJT003K008-1 CONNECTOR(8P) 2
CP803 RJT071K11 CONNECTOR(11P) 1
CP805 RJT071K11 CONNECTOR(11P) 1

D351 MA165 DIODE 1
D401,02 MA167 DIODE 2
D403,04 MA4036M DIODE 2
D405,06 MA165 DIODE 2
D451 MA165 DIODE 1
D452 MA4056M DIODE 1
D453 MA29WA DIODE 1
D501,02 MA165 DIODE 2
D503,04 MA4160M DIODE 2
D505 MA165 DIODE 1
D506 1SS291TA DIODE 1
D507 MA165 DIODE 1
D605 MA4091M DIODE 1
D606 MA165 DIODE 1
D608-10 MA165 DIODE 3
D611,12 MA167 DIODE 2
D613 MA700 DIODE 1
D701-04 P300DLF DIODE 4

D705 1SR35200TB DIODE 1

D706 MA165 DIODE 1
D709 MA4056-LTA DIODE 1
D710-13 1SR35200TB DIODE 4

D795,96 MA4160M DIODE 2
D801 MA4068L DIODE 1
D802 1SS291TA DIODE 1

D803-07 MA165 DIODE 5
D808 1SS291TA DIODE 1
D809,10 MA165 DIODE 2
D825-28 MA165 DIODE 4
D829 MA700 DIODE 1
D851-57 SLR325VCT31 LED 7
D858 SLR325DCT31 LED 1
D859-65 SLR325VCT31 LED 7
D866,67 SLR325DCT31 LED 2

F1 XBA2C20TB0 FUSE 1

IC101 AN6558F IC 1
IC201 NJU7312AL IC 1
IC251 BA6218 IC 1
IC301 UPC4570C IC 1
IC351,52 NJM4580DD IC 2
IC401 AN7062N IC 1
IC501 SVI3205B IC 1

IC502 RSN6000B IC 1
IC601 M5218AP IC 1
IC801 M38503M2405F IC 1
IC803 TC74HC42AP IC 1

JK1 SJS9236 JACK,AC INLET 1
JK201-04 SJF3069N JACK,IN/OUT 4

JK205 SJF3068-7N JACK,TAPE1 PLAY(IN) 1
JK501 RJH4801M-1 JACK,SPEAKERS 1 (E,EG)
JK501 RJH4801M-2 JACK,SPEAKERS 1 (EB)
JK502 RJJ63TA01 JACK,PHONES 1

L1 RLQZ271M COIL,CHOKE 1
L201-04 ELEXT470KA9 COIL 4

L251,52 ELEXT1R0KA9 COIL 2
L501-04 SLQY18G-10 COIL,CHOKE 4
L801 ELEXT101KA9 COIL 1

P1 RPQ0164 PAD 1
P2 RPF0139 PROTECTION COVER 1
P3 RPG4559 PACKING CASE 1 (E)

P3 RPG4560 PACKING CASE 1 (EB,EG)

P4 RPN1221 PAD 1
P5 RPH0032 MIRROR SHEET 1 (EB)
P6 SPP730 SHEET 1

PCB1 REP2865D-M MAIN PCB 1 (E,EG)/(RTL)
PCB1 REP2865E-M MAIN PCB 1 (EB)/(RTL)
PCB2 REP2866D-S SUB PCB 1 (E,EG)/(RTL)
PCB2 REP2866E-S SUB PCB 1 (EB)/(RTL)

Q401,02 2SA992F TRANSISTOR 2
Q451,52 2SC1845F TRANSISTOR 2
Q453,54 2SC3311AR TRANSISTOR 2
Q455,56 2SA1309AR TRANSISTOR 2
Q501-03 2SA992F TRANSISTOR 3
Q601 2SD893AR TRANSISTOR 1
Q602-04 2SA1048GR TRANSISTOR 3
Q605,06 2SC3311AR TRANSISTOR 2
Q607 UN4113 TRANSISTOR 1
Q608 UN4213 TRANSISTOR 1
Q701 2SB621A-R TRANSISTOR 1
Q793 2SD2374PQAU TRANSISTOR 1

Q794 2SB1548PQAU TRANSISTOR 1
Q801 UN4211 TRANSISTOR 1

Q802 UN4111 TRANSISTOR 1
Q803 UN4211 TRANSISTOR 1
Q804 UN4111 TRANSISTOR 1

Q805 UN4211 TRANSISTOR 1
Q806 UN4111 TRANSISTOR 1
Q807 UN4211 TRANSISTOR 1
Q808-10 UN4111 TRANSISTOR 3
Q811 UN4211 TRANSISTOR 1
Q812 UN4111 TRANSISTOR 1
Q813-18 UN4211 TRANSISTOR 6
Q819 2SD2037DEFTA TRANSISTOR 1

Q820 2SK2880BCTA TRANSISTOR 1
Q824,25 2SK301QRS TRANSISTOR 2
Q826 2SA1048GR TRANSISTOR 1

R101,02 ERDS2FJ152 1/4W 1.5K 2
R105,06 ERDS2FJ224 1/4W 220K 2
R109,10 ERDS2FJ101 1/4W 100 2
R113,14 ERDS2FJ563 1/4W 56K 2
R117,18 ERDS2FJ271 1/4W 270 2
R123,24 ERDS2FJ680 1/4W 68 2
R125,26 ERDS2FJ184 1/4W 180K 2
R127,28 ERDS2FJ123 1/4W 12K 2
R129,30 ERDS2FJ563 1/4W 56K 2
R131,32 ERDS2FJ102 1/4W 1K 2
R201,02 ERDS2FJ102 1/4W 1K 2
R205-16 ERDS2FJ102 1/4W 1K 12
R217,18 ERDS2FJ334 1/4W 330K 2
R219-21 ERDS2FJ103 1/4W 10K 3
R223,24 ERDS2FJ393 1/4W 39K 2
R251 ERDS1FJ100 1/2W 10 1

R301,02 ERDS2FJ563 1/4W 56K 2
R303,04 ERDS2FJ123 1/4W 12K 2
R305-08 ERDS2FJ224 1/4W 220K 4
R309,10 ERDS2FJ392 1/4W 3.9K 2
R311,12 ERDS2FJ102 1/4W 1K 2
R313,14 ERDS2FJ223 1/4W 22K 2
R315,16 ERDS2FJ392 1/4W 3.9K 2
R317,18 ERDS2FJ183 1/4W 18K 2
R351,52 ERDS2FJ102 1/4W 1K 2

R353,54 ERDS2FJ473 1/4W 47K 2
R355,56 ERDS2FJ102 1/4W 1K 2
R357,58 ERDS2FJ224 1/4W 220K 2
R361,62 ERDS2FJ183 1/4W 18K 2
R365,66 ERDPS2VF102T 1/4W 1K 2
R367,68 ERDS2FJ392 1/4W 3.9K 2
R401,02 ERDS2FJ272 1/4W 2.7K 2
R403,04 ERDS2FJ393 1/4W 39K 2
R405,06 ERDS2FJ272 1/4W 2.7K 2
R407,08 ERDS2FJ393 1/4W 39K 2
R411,12 RREKFJ470VM 1/4W 47 2
R437 ERDS2FJ473 1/4W 47K 1
R457 ERDS2FJ153 1/4W 15K 1
R459,60 RREKFJ101VM 1/4W 100 2
R461-64 ERDS2FJ333 1/4W 33K 4
R465-68 RREKFJ101VM 1/4W 100 4
R469 ERDS2FJ103 1/4W 10K 1
R470 ERDS2FJ102 1/4W 1K 1
R471,72 ERDS2FJ561 1/4W 560 2
R501,02 ERDS2FJ362 1/4W 3.6K 2
R503,04 RREKFJ121VM 1/4W 120 2
R505,06 ERDS2FJ392 1/4W 3.9K 2
R507,08 RREKFJ121VM 1/4W 120 2
R513-16 RREKFJ100VM 1/4W 10 4
R517-20 ERDS1FJ6R8 1/2W 6.8 4

R521,22 ERDS1FJ100 1/2W 10 2
R527 ERDS2FJ223 1/4W 22K 1

R528 ERDS2FJ824 1/4W 820K 1
R529 ERDS2FJ124 1/4W 120K 1
R530 ERDS1FJ272 1/2W 2.7K 1
R531,32 ERDS1FJ100 1/2W 10 2

R533,34 ERDS2FJ182 1/4W 1.8K 2
R535 ERDS2FJ562 1/4W 5.6K 1
R536,37 ERDS2FJ103 1/4W 10K 2
R550,51 ERDS2FJ222 1/4W 2.2K 2
R555 ERG1SJ681 1W 680 1
R556 ERG1SJ561 1W 560 1

R557 ERG1SJ681 1W 680 1
R558 ERG1SJ561 1W 560 1
R559,60 ERDS1FJ122 1/2W 1.2K 2

R561,62 ERG1SJ151 1W 150 2
R563,64 ERG1SJ181 1W 180 2
R565-70 ERDS2FJ223 1/4W 22K 6
R611-14 ERDS2FJ223 1/4W 22K 4
R615-18 ERDS2FJ103 1/4W 10K 4
R619 ERDS2FJ151 1/4W 150 1
R620 ERDS2FJ153 1/4W 15K 1
R621,22 ERDS2FJ223 1/4W 22K 2
R624 ERDS2FJ333 1/4W 33K 1
R625 ERDS2FJ223 1/4W 22K 1
R626 ERDS2FJ103 1/4W 10K 1
R628 ERDS2FJ564 1/4W 560K 1
R629 ERDS2FJ473 1/4W 47K 1
R630 ERDS2FJ150 1/4W 15 1
R632 ERDS2FJ222 1/4W 2.2K 1
R633 ERDS2FJ563 1/4W 56K 1
R634 ERDS2FJ223 1/4W 22K 1
R637 ERDS2FJ222 1/4W 2.2K 1
R707,08 RREKFJ6R8VM 1/4W 6.8 2
R709,10 RREKFJ470VM 1/4W 47 2
R711 ERDS2FJ221 1/4W 220 1
R712 RREKFJ2R2VM 1/4W 2.2 1
R713 ERDS2FJ223 1/4W 22K 1
R714 ERDS2FJ222 1/4W 2.2K 1
R715 ERDS2FJ221 1/4W 220 1
R793,94 ERDS2FJ103 1/4W 10K 2
R801 ERDS2FJ821 1/4W 820 1
R802 ERDS2FJ102 1/4W 1K 1
R803 ERDS2FJ122 1/4W 1.2K 1
R804 ERDS2FJ152 1/4W 1.5K 1
R805 ERDS2FJ182 1/4W 1.8K 1
R806 ERDS2FJ103 1/4W 10K 1
R807 ERDS2FJ821 1/4W 820 1
R808 ERDS2FJ102 1/4W 1K 1

R809 ERDS2FJ122 1/4W 1.2K 1
R810 ERDS2FJ152 1/4W 1.5K 1
R811 ERDS2FJ182 1/4W 1.8K 1
R812 ERDS2FJ222 1/4W 2.2K 1
R813 ERDS2FJ103 1/4W 10K 1
R814 ERDS2FJ1R0 1/4W 1 1
R815 ERDS2FJ104 1/4W 100K 1
R816-18 ERDS2FJ102 1/4W 1K 3
R819 ERDS2FJ104 1/4W 100K 1
R820 ERDS2FJ102 1/4W 1K 1
R821,22 ERDS2FJ103 1/4W 10K 2
R823 ERDS2FJ102 1/4W 1K 1
R824 ERDS2FJ472 1/4W 4.7K 1
R825-27 ERDS2FJ104 1/4W 100K 3
R828 ERDS2FJ102 1/4W 1K 1
R829 ERDS2FJ103 1/4W 10K 1
R830 ERDS2FJ223 1/4W 22K 1
R831 ERDS2FJ333 1/4W 33K 1
R832,33 ERDS2FJ104 1/4W 100K 2
R834 ERD2FCJ4R7 1/4W 4.7 1

R835 ERDS2FJ105 1/4W 1M 1
R845 ERDS2FJ334 1/4W 330K 1
R851 ERDS2FJ331 1/4W 330 1
R852 ERDS2FJ271 1/4W 270 1
R853,54 ERDS2FJ331 1/4W 330 2
R855 ERDS2FJ271 1/4W 270 1
R857-61 ERDS2FJ331 1/4W 330 5
R862 ERDS1FJ471 1/2W 470 1

RL201-04 RSY0020M-R RELAY 4
RL351 RSY0020M-R RELAY 1
RL501 ,02 RSY0013M-0 RELAY 2

RL503 RSY0020M-R RELAY 1
RL701 ,02 RSY0019M-0 RELAY 2

S204 RSP2B023-A SW,UNIT ON/OFF 1
S801-13 EVQ21405R SW,PUSH 13

•@

T1 RTP7K5E009AW POWER TRANSFORMER 1 (E,EG)/
T1 RTP7K5B005AW POWER TRANSFORMER 1 (EB)/

TH201 ,02 ERTD2ZHL104T THERMISTOR 2

VR201 EUWMRUF25461 VR,VOLUME 1
VR202 EVJ02SFA5G15 VR,BALANCE 1
VR203 ,04 EVNDXAA00B23 VR,OUTPUT VOL.ADJ. 2
VR301 ,02 EVJYA1FA5C15 VR,BASS/TREBLE 2

X801 RSXY8M00D01T OSCILLATOR 1

Z801 RCDGP1U27XD REMOTE SENSOR 1

TOP PREVIOUS NEXT

16 Cabinet Parts Location

TOP PREVIOUS NEXT

•@

TOP PREVIOUS NEXT

17 Packaging

TOP PREVIOUS

•@

TOP PREVIOUS

PHONO

TUNER

PLAY(IN)

TAPE2/MD

REC(OUT)

TAPE1

REC(OUT)

AUX

PLAY(IN)

Q807,808
+B1

AN6558F

IC101

Phono

EQ amp.

RL201

Relay

drive

NJU7312AL

SIGNAL SELECTOR

7

(22)

6

(23)

8

(21)

2

(27)

3

(26)

4

(25)

10

(19)

11

(18)

CD

Q803,804
+B1

IC201

X5

X4

X6

X1

X2

X3

X7

X8

Mode
select

Relay

drive

Vss

VDD

GND

RL203

(20)

(24)

14

(17)

9

1

-B1
RL204

28

+B4

5

Q801,802
+B1

Relay

drive

12

13
15
16

NJM4580DD

IC351

Buffer

amp.

VR203(VR204)

(OUTPUT
VOLTAGE

ADJ.)

+B5

VR201

(VOLUME)

M

79

Drive

6

Pre amp

Logic

NJM4580DD

IC352

Buffer

amp.

(BALANCE)

BA6218

IC251

MOTORDRIVE

2,5,8

VR202

31

DVD

RL202

Q805,806

Relay

+B1

drive

+B4 -B1

42

REG MON

SP A LED

26

D863

(SP.A)

+B3

D864

(SP.B)

KEY SWITCH

(S808~813)

41

KEY AD242KEY AD1

SP B LED

25

D865

(SOURCE)

+B3

TAPE

RELAY

24

SOURCE

LED

(TAPE1)

+B3

X801

(8MHz)

2019

XIN

23

D866

+B3 +B3

X OUT

TAPE1 LED

D867

(TAPE2/MD)

CD

RELAY

RESET

Reset Q818

18

RESET

TAPE2 LED

22

10

9

SEL CLK

SEL DATA

M38503M2405F

IC801

SYSTEM CONTROL

LEDB

LED A

16

17

15

14

A

B

TC74HC42AP

IC803

LED DRIVE

Y1~Y7

16

2~7,

9

+B3

CD

DVD

TAPE

RELAY

RELAY

RELAY

11

34

36

35

RLY

TAPE1

CD RLY

SEL STB

LED C

14

REMCON

6

13

C

8

D851~857

(PHONO/TUNER/CD/

DVD/AUX/TAPE1/

/TAPE2&MD)

DVD

RELAY

MONITOR

27

37

DVD RLY

MON RLY

CNVss

3

15

+B3

Z801
(REMOTE
SENSOR)

MONITOR

RELAY

VR DOWN

28

RELAY

VR UP

SP ARLY

VGCA RLY

33

32

VRUP

VRDOWN

AGND

21

GND

SP ARLY

VGCA RLY

STBY LED

5

Q815

LED

drive

D861
()

+B3

31

SP BRLY

SP BRLY

Q816

30

4

LED
drive

+B3

POWER

VR UP

S MUTE

29

7

POWER

S MUTE

MUTE LED

Q813

D860

(MUTING)

VR DOWN

POWER

BUCKUP

12

BACKUP

VGCA LED

38

LED

drive

(VGCA ON)

+B3

SW

POWER

SW

D859

+B3

2

Q814

VREF

39

LED
drive

+B3

+B6

1

Vcc

VIA LED

D858

(VIA TONE)

+B3

UPC4570C

IC301

Tone
amp.

treble

bass

VR301(BASS),
VR302(TREBLE)

RL351

Q811,812

+B2

Relay

drive

Q824

(Q825)

Q826

Muting

Muting

cont.

D405(D406)

14

(5)13(6)15(4)12(7)

Current

mirror

17
(2)

6(3)

NF

15(13)

Cascade

Current
stabilizer

11018

(12)

6

Bias Muting

–B1

SVI3205B

IC501

POWER AMP

NF

Bias

AN7062N

IC401

VOLTAGE AMP

–B2

7

11
(8)

9

Q401

(Q402)

Pre

amp.

+B8

Q451

(Q452)

Current

stabilizer

–B2

3

(6)

Notes

Signal line : PHONO signal

Signal line : TAPE REC signal

( ) indicates pin No.Right channel.

RSN6000B

(

)

1/2

IC502

Q453(Q454)

V-AMP/

CLASS AA

AMP

+B8

V-AMP/

CLASS AA

AMP

Q455(Q456)

RSN6000B

(

1/2

IC502

)

Motor

cont/drive

Motor

drive

FAN MOTOR

Q601~608

Rch

M5218AP

IC601

M

HEADPHONES

A

+B5

+B6

+B3

+B1

+B2

+B7

+B8

+B4

-B2

-B1

D808

VGCA RLY

D807

D802

D803

Q793

Regulator

Q794

Regulator

Q820

S MUTE

Q819

Regulator

Stabilizer

RL351

Q503

SPEAKERS

L1

B

AC IN

Short

POWER

4

+B7

POWER

Det.

Dc Det.

Ac Det.

11,

5

14

–B3

SW

S204

(UNIT ON/OFF)

Q817

Relay

drive
cont.

RESET

D809

Q701

Relay

drive

D701~704

8

BUCKUP

D810

D611,

612

D710~713

RL701

Relay

drive

SP BRLY

RL501,

502

Q501,502,

809,810

SP ARLY

T1

Relay

drive

F1

Mute

Det.

18

POWER TRANSFORMER

RL702

-B3

UPC4570C

16

9

1

8

AN6558F

5

8

NJM4580DD
M5218AP

5

8

4

1

4

1

NJU7312AL M38503M2405F TC74HC42AP

15

28

1

1

14

42

22

21

18

AN7062N

10

9

1

BA6218

RSN6000B
SVI3205B

2SA992EFPTA

2SK301QRSTA

2SK2880BCTA

2SA933QRSTA

1

9

2SD2037DEFTA

1

18

2SD2374PQAU

E

C

B

2SB1548PQAU

B

C

E

MA165TA
MA29WATA

A

Anode

Ca

Cathode

B

C

E

SLR325DCT31
SLR325VCT31

A

Anode

Ca

Cathode

A

E

C

B

MA167ATA
MA700ATA
1SS291TA

A

Ca

Anode

Ca

Cathode

2SA1123RSTTA
2SB621AQRSTA
2SC2631RSTTA
2SD893RTA

2SA1309ATA
2SC3311ATA
UN4111TA
UN4113TA
UN4211TA
UN4213TA

1SR35200TB

A

Anode

Ca

Cathode

D

G

S

MA4036MTA
MA4056MTA
MA4068LTA

A

A

Anode

P300DLF

A

Anode

Ca

Ca

Cathode

Ca

Cathode

D

G

S

MA4091MTA
MA4056LTA

A

MA4160MTA

A

Anode

Ca

Ca

Cathode

AC IN

AC IN P.C.B.

F

W2

SPEAKERS

W1

2 1

TAPE 1

CN601

TAPE 2/

MD

TUNER

PHONO

CDDVDAUX

Note:

....

BLK

BLACK

....

BLU

BLUE

....

RED

RED

....

BRN

BROWN

....

WHT

WHITE

POWER TRANSFORMER

E

P.C. B.

W703

1 . 3

W2

W702

1 . . . . . 7

T1(Power transformer)

WHT/BLU

W1

WHT/BRN

FAN MOTOR

CN302

1 . . . . . . 8

RED

BLK

CN301

1 . . . . . . 8

2
1

A

MAIN P.C.B.

CN702

7

.
.
.
.
.

1

CN801

1 . . . . . . 8

CN802

1 . . . . . . 8

POWER SWITCH

D

P.C. B.

8 . . . . . . 1

CP802

10 . . . . . . . . 1

CN201

VOLUME P.C.B.

H

8 . . . . . . 1

CP801

8 . . . . . . 1

CN202

CP803

CP201 CP202

10 . . . . . . . . 1

. .

1 . . . . . . .

11

8 . . . . . . 1

CP301

8 . . . . . . 1

8 . . . . . . 1

CP302

. .

11 . . . . . . .

1

CN803

LED(1) P.C. B.

B

OPERATION P.C.B.

G

CP805

1 . . . . . . .

CN401

4 . . 1

1

.

3

W807

. .

11

CP401

4 . . 1

I

11 . . . . . . .

LED(2) P.C. B.

C

CN703

W807

3 . 1

3 . 1

PHONES

HEADPHONES
P.C. B.

. .

1

CN805

77

1

2

90˚

7 Front Panel Controls

77

1 293 4 5 6 7

/I

MUTING

OPERATION

SPEAKERS

PHONES

8

BA

10 11 1312

VGCA

VIA TONEON

TAPE MONITOR

SOURCETAPE 2/MDTAPE 1

Main unit

No. Name

1

Unit on/off button

( /I)

and remote standby indicator ( )

Use this button to turn the unit on and off.

(off): The unit is in standby mode.
(on): The unit is on. The unit can be turned on and off with

the remote control. When the unit is turned off with the
remote control it is in remote standby and the indicator

lights.
The unit is still using a small amount of power in the standby and
remote standby conditions. Standby uses less power.

2

Operation indicator (OPERATION)

3

Muting indicator (MUTING)

4

VGCA button/indicators ( )

VGCA

VOLUME

TAPE 1TAPE 2/MD AUX DVD CD TUNER PHONO

MAXMIN

BASS TREBLE BALANCE

MIN MAX MIN MAX L R

No. Name

5

Volume control (VOLUME)

6

Input select buttons/indicators

7

Panel button (PUSH OPEN)

Press to open the clear panel.
Close by hand.

8

Remote control signal sensor

9

Headphone jack (PHONES)

:

Speaker select buttons/indicators
(SPEAKERS A, B)

;

Tape monitor buttons/indicators
(TAPE MONITOR)

<

Tone contols (BASS, TREBLE)

=

Balance control (BALANCE)

PUSH OPEN

If the clear panel comes off

1

Insert the panel as shown in the illustration.

2

Ensure the panel is parallel to the unit, then press firmly down and in on the levers until they click into place.

3

Check that the panel now moves correctly.

If it does not, remove it and repeat the above procedure.

77

GND

REC

(OUT)

REC

(OUT)

PLAY

(IN)

PLAY

(IN)

PHONO

TAPE 1

TUNER

TAPE 2/MD

AUX

CD

DVD

L

R

GND

REC

(OUT)

REC

(OUT)

PLAY

(IN)

PLAY

(IN)

PHONO

TAPE 1

TUNER

TAPE 2/MD

AUX

CD DVD

REC (IN) PLAY (OUT)

OUTPUTGND

OUTPUT

ANALOG
IN

ANALOG
OUT

OUTPUT

OUTPUT

AUDIO
OUT

VIDEO
OUT

7 Connections

77

Stereo phono cable (not included)

Connections to other equipment

White (L)
Red (R)

MD deck (or second tape deck)
(not included)

Tape deck (not included)

Tuner (not included)

Ground wire
(not included)

Turntable (not included)

CD player (or CD changer)
(not included)

Cooling fan

The cooling fan operates at high
power output levels only.

Second CD player, etc.
(not included)

DVD player (not included) TV (not included)

Connecting the speakers

SPEAKERS

A

B

++

R

L

SPEAKERS

A

B

++

R

L

3

2

1

AC IN

Connecting the speaker cables

NO

Caution

To prevent damage to circuitry, never
short-circuit the positive (+) and negative
(–) speaker wires.

Right speaker
(not included)

Speaker cables
(not included)

Speaker impedance

When only the “A” or only the “B” terminals are used: 4–16 Ω
When the “A” and “B” terminals are used simultaneously: 8–16 Ω

Left speaker
(not included)

“B” terminals

For connection to a second pair of speakers.

Connecting the power supply

AC mains lead
(included)

Household mains socket

BE SURE TO READ THE CAUTION FOR THE AC MAINS
LEAD BEFORE CONNECTION.

Connect the AC mains lead only after all other connections have
been made.

Insertion of connector

Even when the connector is
perfectly inserted, depending on the
type of inlet used, the front part of
the connector may jut out as shown
in the drawing.
However there is no problem using
the unit.

Connector

Approx. 6 mm

Appliance inlet

77

/I

SPEAKERS

A

B

SOURCETAPE 2/MDTAPE 1

TAPE MONITOR

TAPE 1TAPE 2/MD AUX DVD CD TUNER PHONO

VOLUME

MIN MAX

7 Listening

77

1 2

OPERATION

1

3

VOLUME

6

4

Preparation

Before operation, set [VOLUME] to the “MIN” position.

1

Press [ /I].

About 4 seconds later, the “OPERATION” indicator will light
up.

2

Select the speakers to be used.

The corresponding speaker indicator will illuminate.

3

Press [SOURCE].

4

Press input select buttons to select the
desired source.

The corresponding indicator lights.

TAPE 1: Tape deck
TAPE 2/MD: Second tape deck or MD deck
AUX: Component connected to the “AUX” terminals
DVD: DVD player
CD: CD player (or CD changer)
TUNER: Tuner
PHONO: Turntable

5

Start the desired source.

Refer to the appropriate operating instructions for details.

2

3

4

6

6

Adjust the volume.

After listening is finished

Be sure to reduce the volume level, and turn the unit off by pressing
the unit on/off button.

To adjust the sound balance

MUTING

MD

TAPE 1 TUNER

DVD PHONO

MUTING

VOLUME

AUX

DECK1/2 BAND

V

TAPE 2 CD

/

–+

DVD

MUTING

BASS TREBLE

BALANCE

VIA TONEON

VOLUME

MIN MAX MIN MAX

LR

PHONES

VGCA

BALANCE

LR

BASS TREBLE

MIN MAX MIN MAX

VIA TONEON

1

2

VGCA

MUTING

MUTING

VOLUME

MIN MAX

PHONES

A

Turn [BALANCE] to adjust the left/right sound
balance.

The VGCA circuit

This unit features a state-of-the-art variable gain control amplifier
(VGCA).
Rather than reducing the volume of the input signal and then
amplifying it as was done in the past, this unit uses the VGCA circuit
to change the gain of the amplifier itself.
This has resulted in a 10 dB improvement on the S/N ratio of past
models.
Leave VGCA on during normal use.
VGCA is switched on at the time of purchase.

A

B

C

To adjust the tone quality

1

Press [VGCA] to turn the “VIA TONE” indicator

B

on.

2

Turn [BASS] to adjust the low-frequency sound.
Turn [TREBLE] to adjust the high-frequency
sound.

Press again to turn VGCA on again. Sound is heard unadjusted.

To mute the sound level

C

Remote control only

Press [MUTING].

The “MUTING” indicator on this unit will light up.

Press again to restore the volume indicated by the volume control.
The “MUTING” indicator will turn off.

Note

Muting is also canceled when the unit is turned off.

To listen through headphones

Decrease the volume, and connect the headphones.
Plug type: 6.3 mm stereo

If sound from speakers is not wanted, press SPEAKER [A] and/or
[B] to turn off the speaker indicators.

D

D

Note

Avoid listening for prolonged periods of time to prevent hearing
damage.

Headphones (not included)

77

2

1

SOURCETAPE 2/MDTAPE 1

TAPE MONITOR

AUX DVD CD TUNER PHONO

SOURCETAPE 2/MDTAPE 1

TAPE MONITOR

7 Recording

77

1

Connect the tape deck or MD deck to either of the “REC (OUT)
(TAPE 1 or TAPE 2/MD)” terminals on the back of the unit.

1

Press [SOURCE].

2

Press on input select button to select the
source to be recorded.

AUX: Equipment connected to the AUX terminal.
DVD: DVD player
CD: CD player (or CD changer)
TUNER: Tuner
PHONO: Turntable

3

Begin recording on tape deck or MD deck.

Follow your equipment’s operating instructions.

4

Begin the source to be recorded.

Note

Some DVD players need special settings before recording. See the
DVD player’s operating instructions for details.

Recording between TAPE 1 and TAPE 2/MD

2

A

You can record from TAPE 1 to TAPE 2/MD and vice versa.

From TAPE 1 to TAPE 2/MD

1 Press [SOURCE].
2 Press input select buttons [TAPE 1].
3 Start recording on the recording deck and playback on the

playback deck.

From TAPE 2/MD to TAPE 1

In step 2, press input select buttons [TAPE 2/MD].

To check a recording

With a tape deck with 3 heads, it is possible to monitor the sound
recorded.

Press [TAPE MONITOR (TAPE 1 or TAPE 2/MD)]
and set the monitor switch on the tape deck to
“TAPE”.

TAPE 1: To monitor the deck connected to the TAPE 1 terminals.
TAPE 2/MD: To monitor the deck connected to the TAPE 2/MD

terminals.

Note

When finished using the tape monitor, press [SOURCE] again.

A