STEREO AMPLIFIER VOLUME

STANDBY/ON

STANDBY

MUTING

TAPE 1 /MD

TAPE 2

MONITOR

OFF ON

A SPEAKERS

TREBLE

BALANCE

INPUT SELECTOR

REC SELECTOR

SOURCE

PHONES

LOUDNESS

DIRECT

ORDER NO.

RRV2033

STEREO AMPLIFIER

A-607R

THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).

MV MY/EW MY/GR SD

Model A-607R

Power Requirement

AC220 230V AC220 230V AC220 230V AC110V/120 127V/220/240V
The voltage can be converted by the following method.
With the voltage selector

CONTENTS

1. SAFETY INFORMATION.. 2 2. EXPLODED VIEWS AND PARTS LIST. 3 3. SCHEMATIC DIAGRAM.. 6 4. PCB CONNECTION DIAGRAM. 14 5. PCB PARTS LIST.. 19 6. ADJUSTMENT.. 22 7. GENERAL INFORMATION.. 7.1 IC INFORMATION.. 7.2 BLOCK DIAGRAM.. 8. PANEL FACILITIES AND SPECIFICATIONS. 24 25
PIONEER ELECTRONIC CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan
PIONEER ELECTRONICS SERVICE, INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A. PIONEER ELECTRONIC (EUROPE) N.V. Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 501 Orchard Road, #10-00 Wheelock Place, Singapore 238880
PIONEER ELECTRONIC CORPORATION 1998
T ZZK OCT. 1998 Printed in Japan

1. SAFETY INFORMATION

This service manual is intended for qualified service technicians; it is not meant for the casual do-it-yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair complex products such as those covered by this manual. Improperly performed repairs can adversely affect the safety and reliability of the product and may void the warranty. If you are not qualified to perform the repair of this product properly and safely, you should not risk trying to do so and refer the repair to a qualified service technician.
WARNING This product contains lead in solder and certain electrical parts contain chemicals which are known to the state of California to cause cancer, birth defects or other reproductive harm. Health & Safety Cod e Section 25249.6 Proposition 65
NOTICE (FOR CANADIAN MODEL ONLY) Fuse symbols (fast operating fuse) and/or (slow operating fuse) on PCB indicate that replacement parts must be of identical designation. REMARQUE (POUR MODLE CANADIEN SEULEMENT) Les symboles de fusible (fusible de type rapide) et/ou (fusible de type lent) sur CCI indiquent que les pices de remplacement doivent avoir la mme dsignation.
(FOR USA MODEL ONLY) 1. SAFETY PRECAUTIONS
The following check should be performed for the continued protection of the customer and service technician.

LEAKAGE CURRENT CHECK

Measure leakage current to a known earth ground (water pipe, conduit, etc.) by connecting a leakage current tester such as Simpson Model 229-2 or equivalent between the earth ground and all exposed metal parts of the appliance (input/output terminals, screwheads, metal overlays, control shaft, etc.). Plug the AC line cord of the appliance directly into a 120V AC 60 Hz outlet and turn the AC power switch on. Any current measured must not exceed 0.5 mA.
ANY MEASUREMENTS NOT WITHIN THE LIMITS OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL SHOCK HAZARD AND MUST BE CORRECTED BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER. 2. PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in the appliance have special safety related characteristics. These are often not evident from visual inspection nor the protection afforded by them necessarily can be obtained by using replacement components rated for voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in this Service Manual. Electrical components having such features are identified by marking with a on the schematics and on the parts list in this Service Manual. The use of a substitute replacement component which does not have the same safety characteristics as the PIONEER recommended replacement one, shown in the parts list in this Service Manual, may create shock, fire, or other hazards. Product Safety is continuously under review and new instructions are issued from time to time. For the latest information, always consult the current PIONEER Service Manual. A subscription to, or additional copies of, PIONEER Service Manual may be obtained at a nominal charge from PIONEER.

Device under test Test all exposed metal surfaces

Leakage current tester

Reading should not be above 0.5 mA
Also test with plug reversed (Using AC adapter plug as required)

Earth ground

AC Leakage Test
2. EXPLODED VIEWS AND PARTS LIST

NOTES:

Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List. The mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation. Screws adjacent to mark on the product are used for disassembly.

(1) PACKING PARTS LIST

Except MV type 4 (MY/EW, MY/GR and MVtypes Only) (MV and MY/EW types Only) 2 (MY/EW and MY/GR types Only) 3 (MY/EW type Only) Separate 18 (SD type Only) 19 (SD type Only)

NSP NSP

2.1 PACKING

MV type Only 14

Mark No.

Description

Part No.
Operating Instructions See Contrast table (2) (English) 2 Operating Instructions See Contrast table (2) (German) 3 Operating Instructions See Contrast table (2) (French/Italian/Dutch/Swedish/Spanish/Portugese) NSP NSP Warranty Card See Contrast table (2) Remote Control Unit (CU-A018) AXD7187 Battery Cover AZN2249 Dry Cell Battery (R6P,AA) AEX-010 Side Protector L AHA7127 Side Protector R Sub Pad Packing Case Literature Bag Packing Sheet Air Cap Power Cord Power Cord with Fuse Fuse (T5A) Operating Instructions (Spanish/Chinese) Caution Label 220V AHA7128 AHA7245 See Contrast table (2) AHG-117 AHG1016 See Contrast table (2) See Contrast table (2) See Contrast table (2) See Contrast table (2) See Contrast table (2) See Contrast table (2)

12 Separate 10

(2) CONTRAST TABLE
A-607R/MV, MY/EW, MY/GR and SD types are constructed the same except for the following :
Mark No. Symbol and Description Part No. MV Type ARB7161 Not used Not used ARY7022 AHD7653 AHG1087 Not used ADG1156 AEK1046 Not used Not used MY/EW Type ARB7161 ARC7211 ARC7212 ARY7022 AHD7653 Not used ADG1154 Not used Not used Not used Not used MY/GR Type Not used ARC7211 Not used ARY7022 AHD7653 Not used ADG1154 Not used Not used Not used Not used SD Type Not used Not used Not used Not used AHD7675 Not used ADG1158 Not used Not used ARC7210 ARR7003 Remarks

1 Operating Instructions (English) 2 Operating Instructions (German) 3 Operating Instructions (French/Italian/Dutch/Swedish/Spanish/Portuguese) 4 Warranty Card 17 Packing Case Air Cap Power Cord Power Cord with Fuse Fuse (T5A)
18 Operating Instructions (Spanish/Chinese) 19 Caution Label 220V

2.2 EXTERIOR

(SD Type Only) 64 (Except MV Type) 7 (Except MV Type) (Except SD Type) (SD Type Only) 8 42

(1) EXTERIOR PARTS LIST

NSP 29 30
FRONT L Assy FRONT R Assy POWER SW Assy AC PRIMARY Assy HEADPHONE Assy VOLUME Assy AF Assy Fuse (FU1, T2A L250V) Flexible Cable (J1, 21P) (AF CN202 - FRONT R CN601) Washer Power Transformer (T1) Chassis Rear Panel Insulator Screw Screw Screw (4 10) Nut PCB Mold Barrier PCB Holder Stud Cover PCB Mold Radiator Plate A Locking Card Spacer Screw LED Lens IR Filter LED Lens T Name Plate
AWX7054 AWX7146 See Contrast table (2) See Contrast table (2) AWX7052 AWX7171 AWX7200 AEK1057 ADD1114 ABE1002 See Contrast table (2) ANA7048 See Contrast table (2) PNW2766 ABA1018 ABA1050 See Contrast table (2) ABN-065 AMR7222 AEC7072 AEC7057 AEC7096 AMR1525 AMR7221 DEC1908 ABA-298 AAK2459 AAK7532 AAK7544 PAN1376
Rotary Knob A Rotary Knob B Volume Knob Speaker Button Main Power Button Bonnet Case Panel Base Front Panel Screw Terminal Screw Nut Screw Screw Screw Washer LED Lens B LED Lens Power Button Screw Short Pin Plug AC Outlet 3-P Cushion 55 Screw Spacer Stud Cover Top Cover Dump Plate Cushion Gum Radiator Plate C Sub Frame Trans Plate Voltage Selector (S1) Voltage Selector (S2) Fuse (FU2 : T2A) Fuse (FU3 : T0.5A)
AAB7148 AAB7149 AAB7189 AAD7435 See Contrast table (2) ANE7220 See Contrast table (2) See Contrast table (2) BBT30P080FZK AKE-031 NK90FUC ABA1006 ABA1009 BPZ30P080FMC WG40FCC AAK7538 PNW2019 AAD7436 BMZ30P080FCU AKM-050 See Contrast table (2) PNM1316 ABA1193 ABF7004 AEC7105 AME1086 ANG7198 AEB7004 AMR7257 ANG7137 See Contrast table (2) See Contrast table (2) See Contrast table (2) See Contrast table (2) See Contrast table (2)

NSP NSP NSP NSP

Mark No. Symbol and Description POWER SW ASSY AC PRIMARY Assy Power Transformer (T1 : AC220-230V) Power Transformer (T1 : AC110V/120-127V/220V/240V) Rear Panel Screw Main Power Button Panel Base Front Panel AC Outlet 3-P Trans Plate Voltage Selector (S1) Voltage Selector (S2) Fuse (FU2 : T2A) Part No. MV Type AWX7057 AWX7056 ATS7128 Not used MY/EW Type AWX7057 AWX7197 ATS7128 Not used MY/GR Type AWX7057 AWX7197 ATS7128 Not used SD Type Not used AWX7198 Not used ATS7129 Remarks
ANC7726 ABA1014 ADD7437 AMB7484 ANB7149 Not used ANG7228 Not used Not used Not used Not used
ANC7725 ABA1014 ADD7437 AMB7484 ANB7149 AKP-502 ANG7228 Not used Not used Not used AEK1051
ANC7727 ABA7047 Not used AMB7553 ANB7152 AKP7007 Not used AKX-507 AKX1004 AEK1057 AEK1051

65 Fuse (FU3 : T0.5A)

3. SCHEMATIC DIAGRAM
3.1 OVERALL CONNECTION DIAGRAM

HEADPHONE ASSY (AWX7052)

D FRONT R ASSY

(AWX7146)

A AF ASSY

(AWX7200)

C VOLUME ASSY

(AWX7171)

Note : When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS LIST" or "PCB PARTS LIST".

B FRONT L ASSY

(AWX7054)

EXCEPT SD TYPE

E AC PRIMARY ASSY
(MY/EW, MY/GR : AWX7197) (MV : AWX7056) (SD : AWX7198)

G POWER SW

ASSY (AWX7057)

(MY/EW, MY/GR ONLY)

AC PRIMARY ASSY (SD ONLY)

A-607R 3.2 AF ASSY C

: AUDIO SIGNAL ROUTE

A-607R D

TO POWER TRANSFORMER T1

L406 ATX1012

A-607R 3.3 FRONT L AND VOLUME ASSEMBLIES

B FRONT L ASSY (AWX7054)

FRONT L ASSY S 701 : POWER STANDBY/ON S 702 : LOUDNESS S 703 : SPEAKERS A S 704 : SPEAKERS B
A-607R 3.4 FRONT R, AC PRIMARY, HEADPHONE AND POWER SW ASSEMBLIES
AC PRIMARY ASSY (MY/EW, MY/GR : AWX7197) (MV : AWX7056) (SD : AWX7198) FU1
T2A L 250V AEK1057 FU2 SD ONLY T2A L 250V AEK1057 RY801 : ASR1036 (SD)

SD ONLY (AKC-081)

SWITCHED UNSWITCHED N FU3 (EXCEPT MV) T0.5A L 250V AEK1051 TO AC OUTLET (EXCEPT MV)

240V (EXCEPT SD)

TO VOLTAGE SELECTOR (SD ONLY) NP 1/50 YA 47/10

120V AC POWER CORD

NOTE FOR FUSE REPLACEMENT CAUTION - FOR CONTINUED PROTECTION AGAINST RISK OF FIRE. REPLACE WITH SAME TYPE AND RATINGS ONLY.
G POWER SW ASSY (AWX7057)
FRONT R ASSY S 601 : INPUT SELECTOR S 603 : TAPE2 MONITOR S 604 : DIRECT S 605 : MUTING S 606 : REC SELECTOR

TC74HC107AP

TC74HC00AP
4. PCB CONNECTION DIAGRAM

4.1 AF ASSY

AF ASSY

POWER TRANSFORMER T1

NOTE FOR PCB DIAGRAMS:
1. Part numbers in PCB diagrams match those in the schematic diagrams. 2. A comparison between the main parts of PCB and schematic diagrams is shown below.
Symbol in PCB Diagrams Symbol in Schematic Diagrams Part Name
B B C E B B C E D D G S G

E Transistor

E Transistor with resistor
S Field effect transistor
S MOS Field effect transistor

S D G 2 S G

Resistor array
3-terminal regulator 3. The parts mounted on this PCB include all necessary parts for several destination. For further information for respective destinations, be sure to check with the schematic diagram. 4. Viewpoint of PCB diagrams

Capacitor Connector

SIDE A SIDE B

P.C.Board

Chip Part

C SIDE A

Q406 Q413 Q414
Q451 IC451 IC151 IC452 Q452
IC101 Q409 Q410 Q411 Q407 Q412 Q323 Q408 Q324
Q319 Q101 Q151 Q322 Q104 Q153 VR301 VR302 Q313 Q318

D CN601

Q309 Q312 Q325

IC301 Q301 Q304

IC251 Q251

(ANP7227-A) 7

4.2 FRONT L AND VOLUME ASSEMBLIES

(ANP7227-A)

VR752 Q701 Q702 Q707 Q706 Q704 Q703 IC751 Q751 Q752

VR751 Q705

SIDE A

Q503 Q507

Q509 Q506 Q505 Q504 Q510 Q508 Q513 Q512

4.3 FRONT R ASSY

Q616 Q606

Q610 Q617

IC603 Q609 Q608 IC602 Q618

Q604 IC601 Q603

Q601 Q612

Q611 Q614 Q615 Q607

(ANP7228-A)

B CN701

4.4 AC PRIMARY, HEADPHONE AND POWER SW ASSEMBLIES
G POWER SW ASSY F HEADPHONE ASSY

A CN401

(EXCEPT SD)

AC OUTLET (EXCEPT MV)

AC POWER CORD
VOLTAGE SELECTOR (SD ONLY)

NEUTRAL

Mark No. Description Part No. Mark No. Description Part No.

5. PCB PARTS LIST

Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List. The mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation. When ordering resistors, first convert resistance values into code form as shown in the following examples.
Ex.1 When there are 2 effective digits (any digit apart from 0), such as 560 ohm and 47k ohm (tolerance is shown by J=5%, and K=10%). 561... RD1/4PU 1 J 560 473... RD1/4PU 3 J 47k 0.5 R50... RN2H R K 1 1R0... RS1P 1 R 0 K Ex.2 When there are 3 effective digits (such as in high precision metal film resistors). 5621.. RN1/4PC F 5.62k
LIST OF WHOLE PCB ASSEMBLIES

Symbol and Description

AF COMPLEX ASSY AF ASSY FRONT L ASSY VOLUME ASSY CONTROL ASSY FRONT R ASSY AC PRIMARY ASSY HEADPHONE ASSY POWER SW ASSY

KN101, KN201, KN301, KN302 KN451 EARTH METAL FITTING

FRONT L ASSY

IC751 Q751, Q752 Q702, Q703 Q701, Q704Q707 D702, D711 D701, D704D706 UPC4570C 2SC1845 2SC2458 DTC124ES HSS104-02 SLR-342VCT31
C161, C162, C469, C470 C165, C166 C401C404 C117, C118, C171, C310, C327 C409, C453, C454 C172C174 C159, C160 C307, C308

S701S704 ASG1034

C701 C753, C751, C759, C761, (3.3F/25V) C754 C752, C755, C756 C760 C762 ACH7027 CCCSL151J50 CEAS100M50 CEASR47M50 CEJAR10M50 CFTLA153J50 CKCYF473Z50 CKPUYB102K50 CKPUYF473Z16

RESISTORS

R458, R459 R133, R134, R171, R172 R317, R318, R351R354, R417 R452 R339R346 R331R334 R125, R126 R367, R368 R355, R356 R461 R361, R362 R462 R363, R364 R315, R316 R357R360 R349, R350 R451 R413R416 R453 R454 R403, R404 VR301, VR302 (2.2k) Other Resistors RD1/4LMF2R2J RD1/4MUF101J RD1/4MUF101J RD1/4MUF101J RD1/4MUF221J RD1/4MUF391J RD1/4MUF821J RD1/4PMF100J RD1/4PMF222J RD1/4PMF470J RD1/4PMF4R7J RD1/4PU100J RDR1/2PM152J RDR1/4PM561J RFA1/4PS101J RN1/4PC2001F RS1LMF330J RS1LMFR22J RS2LMF122J RS2LMF182J RS2LMF331J VCP1123 RD1/4PU J
C757, C758 C765 C763, C764 C711
R771, R772 VR751, VR752 (30k) Other Resistors RD1/4MUF101J ACS7016 RD1/4PU J

OTHERS

CABLE HOLDER (7P) J3 JUMPER WIRE CN701 CONNECTOR (15P) REMOTE RECEIVER UNIT 51063-0705 D15A07-200-2651 KPE15 GP1U28X

VOLUME ASSY

Q501Q510 Q512 Q511, Q513, Q514 D501D510, D512, D513 2SK246 DTA124ES DTC124ES HSS104-02
CABLE HOLDER (3P) CN202 21P FFC CONNECTOR SCREW SCREW SCREW CN101, CN102 PIN JACK(8P) SPEAKER TERMINAL 8-P HEAT SINK B HEAT SINK J2 JUMPER WIRE 51063-0305 9604S-21C ABA-298 ABA1007 ABA1052 AKB7081 AKE1011 ANH1021 ANH1150 D15A03-075-2651
C501, C502 C512 C503, C504 C511 CCCSL471J50 CEBA470M10 CFTYA823J50 CKCYF473Z50
VR501 (50k) Other Resistors ACX1090 RD1/4PU J
CN501 19P SOCKET CN502 CONNECTOR (7P) KP200TA19L KPE7

FRONT R ASSY

IC601 IC603 IC602 Q609 Q607, Q610, Q618 Q611Q613, Q615, Q616 Q601Q606, Q608, Q614, Q617 D608D610, D615, D618D622 D636 D631 D617 D607 D601D606, D632D635 PD5369A TC74HC00AP TC74HC107AP 2SA1048 2SC2458 DTA124ES DTC124ES HSS104-02 HSS104-02 MTZJ2.2B MTZJ4.3A SLR-342DCT31 SLR-342VCT31
(2) PARTS LIST FOR AWX7056 SEMICONDUCTORS
IC811 Q811 D815 D811D814 NJM78M56FA 2SK1132 HSS104-02 S5688G

TRANSFORMERS

T801 ATT7009 RSR1037
C801, C802 (0.01F/AC250V) C815 (3.3F/25V) C813 C814 C811 ACG7020 ACH7027 CEAT471M25 CEBA470M10 CEYANP1R0M50

L601L609 LAU221J

S603S606 S601 ASG1034 ASX7002
Other Resistors RD1/4PU J
Y802, Y803 BOARDIN READ WIRE CN801 AC INLET CN803 CONNECTOR (3P) H1, H2 FUSE HOLDER ADX7207 AKP7005 KPE3 RKR1003

C601, C625, C635 (3.3F/25V) C605 (0.22F) C624 C610, C637 C634 C603 C604 C613C623, C626, C627, C630 C632, C633 C628, C629, C631 C609, C636 ACH7027 ACH7058 CEJA1R0M50 CEJA2R2M50 CEJA3R3M50 CEJA470M16 CKCYF103Z50 CKPUYF103Z25 CKPUYF103Z25 CKPUYF473Z16 CKPUYX472M16

HEADPHONE ASSY

C551, C552 CKCYB392K50

CAPACITORS OTHERS

CABLE HOLDER (3P) J5 JUMPER WIRE JA501 HEADPHONE JACK 51063-0305 D15A03-150-2651 RKN1002
VR601 (500K) Other Resistors ACS7019 RD1/4PU J

POWER SW ASSY

S901 ASG1035
CABLE HOLDER (15P) CN601 21P FFC CONNECTOR J4 JUMPER WIRE X601 CERAMIC RESONATOR (4.19MHz) 51063-1505 9604S-21F D15A15-125-2651 VSS1014
SWITCHES AND RELAYS CAPACITORS
C901 (0.0033F/AC250V) ACG7017

AC PRIMARY ASSY

(1) CONTRAST TABLE
AWX7056, AWX7197 and AWX7198 are constructed the same except for the following :
Mark Symbol and Description H3, H4 FUSE HOLDER H5, H6 FUSE HOLDER RY801 AWX7056 Not used Not used RSR1037 Part No. Remarks AWX7197 AWX7198 Not used RKR1003 RKR1003 RKR1003 RSR1037 ASR1036

6. ADJUSTMENTS

6.1 IDLE CURRENT ADJUSTMENT
CAUTION : Heatsinks (Q323Q326) DC level is equal to +B or -B. Dont touch them or you will be electricary chocked. 1. Connect the measuring instrument as Fig.6-1. (R415 or R416) 2. Set the VOLUME CONTROL to minimum, BASS TONE CONTROL to center, TREBLE TONE CONTROL to center and BALANCE CONTROL to center. Set VR301 and VR302 to minimum. 3. Set the POWER switch to ON. 4. Adjust VR301 (VR302) so that the voltage between both sides of R415 (R416) becomes 16mV1mV. (Within 10 seconds from when the relay is turned ON) 5. Ages for 7 minutes. 6. Adjust VR301 (VR302) so that the voltage between both sides of R415 (R416) becomes 11mV1mV.

DC Voltmeter

R415 R413 W150 Heat Sink VR301 R417 W212

R416 R414

Heat Sink

VR302 Heat Sink

Fig.6-1 Adjustment Method

7. GENERAL INFORMATION

7.1 IC INFORMATION
PD5369A (FRONT R ASSY : IC601)
REMOTE CONTROL AMP MICROCOMPUTER
The information shown in the list is basic information and may not correspond exactly to that shown in the schematic diagrams.
Pin Assignment (Top view)
P53 P17/SRDY P16/CLK P15/SOUT P14/SIN P13/T1 P12/T0 P11 P10 P27/IN7 P26/IN6 P25/IN5 P24/IN4 P23/IN3 P22/IN2 P21/IN1 P20/IN0 VREF XIN XOUT
1 SR 2 STB 3 CLK 4 DATA 5 CD-IND 6 TU-IND 7 PH-IND 8 LI-IND 9 T1-IND 10 SPA-IND 11 SPB-IND 12 LOU-IND 13 POW-IND 14 MUT-IND 15 DIR-IND 16 T2-IND 17 F-MUTE 18 VREF 19 XIN 20 XOUT 21 VSS
TPOWER 41 LOUD 40 M-CTRL 39 P-DET 38 P-CTRL 37 DIRECT 36 MUTE 35 WAKE UP 34 FUNCFUNCV-UP 31 V-DOWN 30 RSELRSELNC 27 BACK UP 26 RST 25 SPA 24 SPB 23 VCC 22
P52 P07 P06 P05 P04 P03 P02 P01 P00 P43 P42 P41 P40 P33/CNTR1 P32/CNTR0 P31/INT1 P30/INT0 RESET P51/XCOUT P50/XCIN VCC

Pin Function

No. Pin name I/O Function 1 P53 I Remote control signal input pin. 2 O STB for TC9163N. P17/SRDY 3 P16/CLK O CLOCK for TC9163N. 4 P15/SOUT O DATA for TC9163N. 5 P14/SIN O CD INDICATOR. 6 P13/T1 O TUNER INDICATOR. 7 P12/T0 O PHONO INDICATOR. 8 P11 O LINE INDICATOR. 9 P10 O TAPE1 INDICATOR. 10 P27/IN7 O SPEAKER-A INDICATOR. 11 P26/IN6 O SPEAKER-B INDICATOR. 12 P25/IN5 O LOUDNESS INDICATOR. 13 P24/IN4 O POWER (STAND-BY) INDICATOR. MUTE INDICATOR. 14 P23/IN3 O MUTE ON : Repeats H and L every 1 second. Normal : H 15 P22/IN2 O DIRECT INDICATOR. 16 P21/IN1 O TAPE2 INDICATOR. 17 P20/IN0 O FUNCTION switch MUTE. 18 VREF I Pulls up to 5V. 19 XIN I 4.19MHz. 20 XOUT O Ceramic vibrating and connecting terminal. 21 VSS - Digatal GND. 22 VCC - Power supply +5V. 23 P50/XCIN I SPEAKER-B KEY input.
No. Pin name I/O Function 24 P51/XCOUT I SPEAKER-A KEY input. 25 I Reset pin. RESET 26 P30/INT0 I BACK UP detection pin. interrupt specification. 27 P31/INT1 O Not used. 28 P32/CNTR0 I REC selector input 1. 29 P33/CNTR1 I REC selector input 2. interrupt specification. 30 P40 O Volume DOWN data output. 31 P41 O Volume UP data output. 32 P42 I FUNCTION selector input 1. 33 P43 I FUNCTION selector input 2. WAKE UP input. I 34 P00 Key on wake up specification. MUTE KEY input. I 35 P01 Key on wake up specification. DIRECT KEY input. I 36 P02 Key on wake up specification. 37 P03 O Protection control pin. 38 P04 I Output error detection pin 39 P05 O MUTING control pin. LOUDNESS KEY input. I 40 P06 Key on wake up specification. POWER KEY input. I 41 P07 Key on wake up specification. 42 P52 I TAPE2 KEY input.

24 ON/OFF

FUNCTION LOUDNESS Q505 Q501 Q503 DIRECT ON/OFF

CN101 CN102

DIRECT ENERGY MOS

2.8mV /50k

VOLUME

7.2 BLOCK DIAGRAM

200mV /50k

LINE IC101(1/2)

Q509 Q303

M VR501

TONE AND BALANCE
POWER AMP WRLC 40dB PROTECTION RY A 401 RY401 SP-A A RY402 SP-B RY403 H.P A

TAPE1 /DAT SOURSE

200mV /1k

IC251 UP/DOWN

200mV TAPE2 /50k MONITOR

IC101(2/2)

IC751 VR751 VR752 VR601
UNUSUAL OUTPUT FUNC DETECTION MUTE
CD, TAPE1/DAT : RY101, RY102
+BL TO FUNCTION SW TO POWER STAGE BL
FROM UNUSUAL OUTPUT DETECTION
DIRECT, LOUDNESS ON/OFF VOLUME UP/DOWN TO VOLTAGE STAGE MUTE, FUNC MUTE ON/OFF BH TO OP AMP RY

IC451 IC452

+19.+BH

KEY INPUTS

T1 FU1 RY801

FROM REC SEL -COM

FROM FUNCTION SEL
TO -COM LED TO PROTECTION RY +5.6

D457-D460 T801

SR INPUT

D811-D814

8. PANEL FACILITIES AND SPECIFICATIONS

8.1 REAR PANEL

Illustration shows U.K. model

European model only

5678 9

SWITCHED TOTAL 100W MAX

UNSWITCHED 100W MAX

AC OUTLETS

TAPE1/MD REC PLAY

TAPE2 MONITOR REC PLAY

IN IN IN IN OUT IN OUT IN

SPEAKERS

CONTROL

AC INLET

1 PHONO terminals 2 SIGNAL GND (Turntable ground) terminal 3 TUNER terminals 4 CD terminals 5 LINE terminals 6 TAPE 1/MD REC (OUT) terminals 7 TAPE 1/MD PLAY (IN) terminals 8 TAPE 2 MONITOR REC (OUT) terminals
0 SPEAKERS B terminals (Right channel) - SPEAKERS B terminals (Left channel) = AC INLET jack
Connect one end of the power cord to here and the other end to an AC wall socket, or the AC outlet of an audio timer. If you are going to be away from home for a long period of time, disconnect the unit from the wall socket.

~ CONTROL OUT jack

This jack is for outputting control signals when operating other components bearing the mark with the amplifier's remote control unit.
! SPEAKERS A terminals (Left channel) @ SPEAKERS A terminals (Right channel) 9 TAPE 2 MONITOR PLAY (IN) terminals # AC OUTLETS (European model only)

8.2 FRONT PANEL

B BASS TREBLE BALANCE INPUT SELECTOR REC SELECTOR

CD TUNER OFF SOURCE

VOLUME indicator

1 POWER ( 2

ON) switch
6 INPUT SELECTOR knob/indicators
Turn the knob clockwise or counterclockwise so that the indicator lights for your desired input source. Turning the knob clockwise causes the lit indicator to right. Turning counterclockwise causes it to left. CD : For compact disc playback with a CD player. TUNER : For AM or FM broadcast reception with a tuner. PHONO : For record playback with a turntable. LINE : Set to this position when listening to a program from a component connected to the LINE terminals. TAPE 1/MD : For playback with a cassette deck or MD recorder connected to the TAPE 1/MD terminals.
Press to turn power to the unit ON and OFF.
STANDBY/ON switch/indicator
This is the switch for electric power. This switch does not function unless the POWER OFF/
ON switch is set to ON. ON : When set to the ON position, power is supplied and the unit becomes operational. STANDBY : When set to the STANDBY position, the main power flow is cut and the unit is no longer fully operational. A minute flow of power feeds the unit to maintain operation readiness. When the STANDBY indicator lights, the unit is in STANDBY. NOTE: When performing timer recording with this unit, be sure to set the POWER and STANDBY/ON switch to ON.

7 TAPE 2 MONITOR button/indicator
Use when there is an adaptor component (graphic equalizer, etc.) or cassette deck connected to the TAPE 2 MONITOR terminals. Off : Indicator goes out when not in use. On : Indicator lights when using the adaptor component or listening to the cassette deck. NOTE: When no connections are made to the TAPE 2 MONITOR terminals, or when they are not in use, be sure to set this switch to the off position. (No sound will be heard if it is set to the on position.)
3 Remote control sensor window 4 VOLUME control
Use to adjust the volume level. NOTE: The TONE effect functions regardless of volume levels.
5 MUTING button/indicator
Use to temporarily lower sound volume. : The VOLUME indicator flashes. The sound volume is lowered to one-tenth (20dB). Off : The VOLUME indicator lights. The sound will return to its previous volume. On
8 REC SELECTOR switch /indicator(For TAPE 1/MD

terminals)

This switch is used to select the recording source component. The signal from the selected component is output at the TAPE1/ MD jacks for recording. To select a recording source component, press the REC SELECTOR switch so that the indicator of the desired source component lights up. When this switch is set to [TUNER] or [CD], the signal from the selected component can be recorded regardless of the input selector switch and TAPE2 MONITOR button settings. CD : To record from the equipment connected to the CD terminals. TUNER : To record from the equipment connected to the TUNER terminals. SOURCE : To record from the equipment selected by the INPUT SELECTOR knob. OFF : In this position, nothing from the REC terminals of TAPE 1/MD is output. Set to this position when not recording; the cassette deck will be disconnected, improving sound quality. NOTE: The function selected using the INPUT SELECTOR knob will be recorded irrespective of the position of the REC SELECTOR switch (TAPE 2 MONITOR terminals).

= TREBLE tone control

Use to adjust the high-frequency tone. The center position is the flat (normal) position. When turned to the right, the high-frequency tone is emphasized; when turned to the left, the high-frequency tone is de-emphasized. NOTE: This control does not operate when the DIRECT button is in the on position.

~ BASS tone control

Use to adjust the low-frequency tone. The center position is the flat (normal) position. When turned to the right, the low-frequency tone is emphasized; when turned to the left, the low-frequency tone is de-emphasized. NOTE: This control does not operate when the DIRECT button is in the on position.

! PHONES jack

When using headphones, insert the plug into this jack.
@ SPEAKERS B (ON/OFF) button/indicator
Use this button to listen to the speaker system connected to the SPEAKERS B terminals. On : The indicator lights. Sound is heard from the speaker system. Off : The indicator goes out. No sound is heard from the speaker system. Set to this position when listening with headphones.

9 BALANCE control

Should normally be left in the center position. Adjust the balance if the sound is louder from one of the speakers. If the right side is louder, turn toward the L (left) position and if the left side is louder, turn toward the R (right) position. NOTE: This control does not operate when the DIRECT button is in the on position.
# SPEAKERS A (ON/OFF) button/indicator
Use this button to listen to the speaker system connected to the SPEAKERS A terminals. On : The indicator lights. Sound is heard from the speaker system. Off : The indicator goes out. No sound is heard from the speaker system. Set to this position when listening with headphones.
0 DIRECT button/indicator
Use this button when you do not wish to pass the output from input terminal equipment through the various frequency adjusting circuits (BASS, TREBLE, BALANCE, LOUDNESS). On : The indicator lights. The signals input through the input terminals are reproduced without passing through the various frequency adjusting circuits. This results in flat, pure sound which is a more faithful reproduction of the input source. Off : The indicator goes out. The signal passes through the various frequency adjusting circuits.
- LOUDNESS button/indicator
Use when listening at low volume level. On : The indicator lights. Boosts low and high frequencies to give added punch to playback even at low volume level. Off : The indicator goes out. Should normally be left in this position. NOTE: This button does not operate when the DIRECT button is in the on position.

8.3 REMOTE CONTROL UNIT

STANDBY / ON AMP CD TUNER TAPE

TAPE SELECT

DECK II

DECK I

1 TAPE 7 3

DISC SELECT

STATION

TAPE 1

STEREO AMPLIFIER REMOTE CONTROL UNIT

1 CD 2 AMP

STANDBY/ON button STANDBY/ON button

Power output specification is for when power supply is 230V.
Input sensitivity/ impedance PHONO (MM)... 2.8 mV/ 50 k CD, TUNER, LINE, TAPE 1/MD, TAPE 2 MONITOR.. 200 mV/ 50 k PHONO (MM) overload level 1 kHz, T.H.D. 0.1 %.. 150 mV Output level/ impedance TAPE 1/MD, TAPE 2 MONITOR output.... 200 mV/ 1 k Frequency response PHONO (MM). 20 Hz to 20 kHz 0.5 dB CD, TUNER, LINE, TAPE 1/MD, TAPE 2 MONITOR.. 5 Hz to 150 kHz +0 dB* 3 Tone control BASS... 8 dB (100 Hz) TREBLE... 8 dB (10 kHz) Loudness contour (volume control set at 30 dB position)... + 5 dB (100 Hz)/ + 3 dB (10 kHz)
Power Supply/ Miscellaneous
Power requirements.. AC 220 - 230 Volts, 50/ 60 Hz Power consumption.. 220 W AC outlets (European model only) Switched (x2)... total 100 W Unswitched (x1)... 50 W Power Consumption in standby mode.. 1 W Dimensions (including knobs and other protruding parts).. 420 (W) x 335 (D) x 128 (H) mm Weight (without package).. 7.0 kg

Accessories

Remote control unit.. 1 Batteries (AA/R6P)... 2 Operating instructions... 1 Power cord(Rated current 2.5 A)... 1 NOTE: Specifications and design subject to possible modification without notice, due to improvements. * Measured with the DIRECT button set to on. ** Measured by Audio Spectrum Analyzer.

ACCESSORIES

STANDBY / ON AMP CD
Power cord (ADG1154) MY/EW and MY/GR types
Power cord with fuse (ADG1156) MV type
Remote control unit (CU-A018) (AXD7187)
Batteries (AA/R6P) (AEX-010) Power cord (ADG1158) SD type