AIWA XH N5 LH Service Manual

XH-N5

SERVICE MANUAL

COMPACT DISC STEREO

SYSTEM

XH-N5

• This Service Manual is the "Revision Publishing" and replaces "Simple Manual", (S/M Code No. 09-99C-424-7T1).

• If requiring information about the CD mechanism, see Service Manual of AZG-1, (S/M Code No. 09-001-335-3N6).

CASSEIVER

CX-AN5 SX-WAN5

BASIC TAPE MECHANISM : 6ZM-1 AR3NM BASIC CD MECHANISM : AZG-1 ZD8RNDM

SPEAKER

REMOTE

CONTROLLER

RC-AAS02

S/M Code No. 09-003-424-7R1

REVISION

DATA

TABLE OF CONTENTS

SPECIFICATIONS ................................................................................................................................................. 3

PROTECTION OF EYES FROM LASER BEAM DURING SERVICING ........................................................ 4

NOTE ON BEFORE STARTING REPAIR ................................................................................................... 5 ~ 6

DISASSEMBLY INSTRUCTIONS ................................................................................................................... 7 ~ 8

ELECTRICAL MAIN PARTS LIST .............................................................................................................. 9 ~ 13

CHIP RESISTOR PART CODE ........................................................................................................................ 14

TRANSISTOR ILLUSTRATION .......................................................................................................................... 14

FL (BJ741GK) GRID ASSIGNMENT / ANODE CONNECTION ................................................................ 15 ~ 16

WIRING – 1 (MAIN) ............................................................................................................................................ 17

SCHEMATIC DIAGRAM – 1 (MAIN 1 / 2 : FUNCTION / DSP / ECHO / CONNECT1 / 3)................................. 18

SCHEMATIC DIAGRAM – 2 (MAIN 2 / 2 : DECK) ............................................................................................. 19

WIRING – 2 (FRONT / CONNECT) .................................................................................................................... 20

SCHEMATIC DIAGRAM – 3 (FRONT / CONNECT2 / 3 / DECK / DECK MOTOR) ......................................... 21

WIRING – 3 (OPERATE / KEY / MIC / LED–A ~ D) ........................................................................................... 22

SCHEMATIC DIAGRAM – 4 (OPERATE / KEY / MIC / LED–A ~ D) ................................................................. 23

WIRING – 4 (AMP)..............................................................................................................................................24

SCHEMATIC DIAGRAM – 5 (AMP) ...................................................................................................................25

WIRING – 5 (VIDEO I/O / VIDEO JACK / VIDEO–3) ........................................................................................ 26

SCHEMATIC DIAGRAM – 6 (VIDEO I/O / VIDEO JACK / VIDEO–3 / CONNECT3 / 3) ................................. 27

WIRING – 6 (TUNER) .........................................................................................................................................28

SCHEMATIC DIAGRAM – 7 (TUNER) .............................................................................................................. 29

WIRING – 7 (PT) ................................................................................................................................................. 30

SCHEMATIC DIAGRAM – 8 (PT) ...................................................................................................................... 31

WIRING – 8 (DECK / DECK MOTOR / HEAD) ..................................................................................................32

IC BLOCK DIAGRAM.................................................................................................................................33 ~ 38

IC DESCRIPTION .......................................................................................................................................39 ~ 40

ADJUSTMENT – <DECK / FRONT / TUNER> ............................................................................................41 ~ 43

MECHANICAL EXPLODED VIEW 1 / 1 ............................................................................................................ 44

MECHANICAL PARTS LIST 1 / 1 ..................................................................................................................... 45

TAPE MECHANISM EXPLODED VIEW 1 / 2 <6ZL–1 A1> ........................................................................... 46

TAPE MECHANISM PARTS LIST 1 / 2 <6ZL–1 A1> .................................................................................... 47

TAPE MECHANISM EXPLODED VIEW 2 / 2 <6ZM–4 R3> .......................................................................... 48

TAPE MECHANISM PARTS LIST 2 / 2 <6ZM–4 R3> ................................................................................... 49

SPEAKER DISASSEMBLY INSTRUCTIONS .................................................................................................... 50

SPEAKER PARTS LIST.....................................................................................................................................51

ACCESSORIES / PACKAGE LIST ..................................................................................................................... 52

– 2 –

SPECIFICATIONS

Main unit CX-AN5

<FM tuner section> Tuning range 87.5 MHz to 108 MHz Usable sensitivity (IHF) 13.2 dBf Antenna terminals 75 ohms (unbalanced)

<AM (MW) tuner section> Tuning range 530 kHz to 1710 kHz (10 kHz step)

531 kHz to 1602 kHz (9 kHz step)

Usable sensitivity 350 µV/m Antenna Loop antenna

<Amplifier section> Mid-high frequency amplifier Power output Front Rated : 60 W + 60 W

(8 ohms, T.H.D. 1 %, 1 kHz) Reference : 80 W + 80 W (8 ohms, T.H.D. 10 %, 1 kHz)

Total harmonic distortion 0.15 % (40W, 1 kHz, 8 ohms,

DIN AUDIO/Front)

Low frequency amplifier Power output Rated : 200 W + 200 W

(6 ohms, T.H.D. 1 %, 80 Hz) Reference : 240 W + 240 W (6 ohms, T.H.D. 10 %, 80 Hz)

Total harmonic distortion 0.15 % (100W, 80 Hz, 6 ohms,

DIN AUDIO/Front)

Inputs AUX: 310 mV

PHONO: 400 mV VIDEO1, VIDEO2, VIDEO3: 310mV MIC 1, MIC 2: 1.5mV (20 K ohms)

Outputs CD DIGITAL OUT (OPTICAL)

SPEAKERS: LOW: 6 ohms HIGH: 8 ohms SURROUND SPEAKERS: accept speakers of 8 - 16 ohms PHONES (stereo jack): accepts headphones of 32 ohms or more

<Cassette deck section> Track format 4 tracks, 2 channels stereo Frequency response 50 Hz – 15000 Hz Recording system AC bias Heads Deck 1 : Playback head x 1

Deck 2 : Recording / Playback head x 1,

erase head x 1

<Compact disc player section> Laser Semiconductor laser (λ = 780 nm) D-A converter 1 bit dual Signal-to-noise ratio 85 dB (1 kHz, 0 dB) Harmonic distortion 0.03 % (1 kHz, 0 dB)

<General> Power requirements 120V/220 – 230V/240V AC

switchable, 50/60 Hz

Power consumption 260 W Dimensions of main unit 360 x 372 x 423 mm (W x H x D) Weight of main unit 15.5 kg

Speaker system SX-WAN5 Cabinet type 3 way, built-in subwoofer Speaker units Subwoofer :

220 mm cone type Woofer : 120 mm cone type Tweeter: 60 mm cone type

Impedance 6 ohms / 8 ohms Output sound pressurelevel 86 dB/W/m Dimensions 250 x 535 x 298 mm (W x H x D) Weight 7.5 kg

• Design and specifications are subject to change without notice.

• The word "BBE"and the "BBE symbol" are trademarks of BBE

Sound, Inc.

Under license from BBE Sound,Inc.

– 3 –

PROTECTION OF EYES FROM LASER BEAM DURING SERVICING

This set employs laser. Therefore, be sure to follow carefully the instructions below when servicing.

WARNING!

WHEN SERVICING, DO NOT APPROACH THE LASER EXIT WITH THE EYE TOO CLOSELY. IN CASE IT IS NECESSARY TO CONFIRM LASER BEAM EMISSION. BE SURE TO OBSERVE FROM A DISTANCE OF MORE THAN 30cm FROM THE SURFACE OF THE OBJECTIVE LENS ON THE OPTICAL PICK-UP BLOCK.

Caution: Invisible laser radiation when open and interlocks defeated avoid exposure to beam. Advarsel:Usynling laserståling ved åbning, når sikkerhedsafbrydere er ude af funktion. Undgå udsættelse for stråling.

VAROITUS!

Laiteen Käyttäminen muulla kuin tässä käyttöohjeessa mainitulla tavalla saattaa altistaa käyt-täjän turvallisuusluokan 1 ylittävälle näkymättömälle lasersäteilylle.

VARNING!

Om apparaten används på annat sätt än vad som specificeras i denna bruksanvising, kan användaren utsättas för osynling laserstrålning, som överskrider gränsen för laserklass 1.

CAUTION

Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.

ATTENTION

L'utilisation de commandes, réglages ou procédures autres que ceux spécifiés peut entraîner une dangereuse exposition aux radiations.

ADVARSEL!

Usynlig laserståling ved åbning, når sikkerhedsafbrydereer ude af funktion. Undgå udsættelse for stråling.

This Compact Disc player is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT label is located on the rear exterior.

CLASS 1 KLASSE 1 LUOKAN 1 KLASS 1

LASER PRODUCT LASER PRODUKT LASER LAITE LASER APPARAT

Precaution to replace Optical block (KSM-880CAB)

Body or clothes electrostatic potential could ruin laser diode in the optical block. Be sure ground body and workbench, and use care the clothes do not touch the diode.

1) After the connection, remove solder shown in the right figure.

PICK-UP Assy P.C.B

solder

– 4 –

NOTE ON BEFORE STARTING REPAIR

1. Forced discharge of electrolytic capacitor of power supply block

When repair is going to be attempted in the set that uses relay circuit in the power supply block, electric potential is kept charged across the electrolytic capacitors (C101, 102) even though AC power cord is removed. If repair is attempted in this condition, secondary defect can occur. In order to prevent the secondary trouble, perform the following measures before starting repair work.

Discharge procedure

1 Remove the AC power cord.

11 22

2 Connect a discharging resistor at an end of lead wire that

has clips at both ends. Connect the other end of the lead wire to metal chassis.

3 Contact the other end of the discharging resistor to the

positive (+) side (+VH) of C101. (For two seconds)

4 Contact the same end of the discharging resistor as step

3 to the negative (-) side (-VH) of C102 in the same way.

(For two seconds)

5 Check that voltage across C101 and C102 has decreased

to 1 V or less using a multimeter or an oscilloscope.

Select a discharging resistor referring to the following table.

Charging voltage (V) Discharging

(C101, 102) resistor (Ω)

25-48 100 3 87-A00-247-090

49-140 220 5 87-A00-232-090

Note: The reference numbers (C101, C102) of the electrolytic capacitors can change depending on the models. Be sure to check the

reference numbers of the charging capacitors on schematic diagram before starting the discharging work.

Rated power (W) Parts number

MAIN C.B

D101

C101 C102

Fig-1

2. Check items before exchanging the MICROCOMPUTER

Be sure to check the following items before exchanging the MICROCOMPUTER. Exchange the MICROCOMPUTER after confirming that the MICROCOMPUTER is surely defective.

2-1. Regarding the HOLD terminal of the MICROCOMPUTER

When the HOLD terminal (INPUT) of the MICROCOMPUTER is “H”, the MICROCOMPUTER is judged to be operating correctly. When this terminal is “L”, the main power cannot be turned on. Therefore, be sure to check the terminal voltage of the HOLD terminal before exchange. When the MICROCOMPUTER is not defective, the HOLD terminal can also go “L” when the POWER AMPLIFIER has any abnormalities that triggers the abnormality detection circuit on the MAIN C. B. that sets the HOLD terminal to “L”.

• Good or no good judgement of the MICROCOMPUTER

1 Turn on the AC main power.

11 22

2 Confirm that the main power is turned on and the HOLD terminal of the MICROCOMPUTER keeps the “H” level or not.

22 33

3 When the HOLD terminal is “L” level, the abnormality detection circuit is judged to be working correctly and the

MICROCOMPUTER is judged to be good.

– 5–

In such a case, check also if the POWER AMPLIFIER circuit or power supply circuit has any abnormalities or not.

2-2. Regarding reset

There are cases that the machine does not work correctly because the MICROCOMPUTER is not reset even though the AC power cord is re-inserted, or the software reset (pressing the STOP key + POWER key) is performed. When the above described phenomenon occurs, it can lead to wrong judgement as if the MICROCOMPUTER is defective and to exchange the MICROCOMPUTER. In such a case, perform the forced-reset by the following procedure and check good or no good of the MICROCOMPUTER.

1 Remove the AC power cord.

FRONT C.B

MICROCOMPUTER

FRONT C.B

2 Short both ends of the electrolytic capacitor C113 that is connected to VDD of the MICROCOMPUTER with tweezers.

22 33

3 Connect the AC power cord again. If the MICROCOMPUTER returns to the normal operation, the MICROCOMPUTER is

good.

Note: The reference number or MICROCOMPUTER pin number of transistor (Q110) and electrolytic capacitor (C113) can change depending

on the models. Be sure to check the reference numbers on schematic diagram before starting the discharging work.

C113

Short with tweezers.

Fig-2-2

C113

VSS

VDD

MICROCOMPUTER

2-3. Confirmation of soldering state of MICROCOMPUTER

Check the soldering state of the MICROCOMPUTER in addition to the above described procedures. Be sure to exchange the MICROCOMPUTER after surely confirming that the trouble is not caused by poor soldering but the MICROCOMPUTER itself.

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