Hitachi AX-F100-WUN, AX-F100-W, AX-F100-E, AX-F100-EBS Service Manual

SERVICE MANUAL
MANUEL D'ENTRETIEN
WARTUNGSHANDBUCH

CAUTION:

Beforeservicing this chassis, itisimportantthat the servicetechnician read the“Safe ty
Precautions”and“ProductSafetyNotices”inthisservicemanual.

SM0100

AXF100E
AXF100EBS
AXF100UC
AXF100W
AXF100WUN

Data contained within this Service
manual is subject to alteration for
improvement.

ATTENTION:

Avantd’effectuerl’entretienduchâassis,letechniciendoitlireles«Précautionsdesécurité»
etles«Noticesdesécuritéduproduit»présentésdansleprésentmanuel.

VORSICHT:

VorÖffnendesGehäuseshatderService-Ingenieurdie„Sicherheitshinweise“und„Hinweise
zurProduktsicherheit“indiesemWartungshandbuchzulesen.

Les données fournies dans le présent
manueld’entretienpeuventfairel’objet
demodificationsenvuedeperfectionner
leproduit.

Die in diesem Wartungshandbuch
enthaltenenSpezifikationenkönnensich
zwecksVerbesserungenändern.

CONTENTS

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

SERVICE POINTS..............................................................................................................................................4

WIRING DIAGRAM.............................................................................................................................................8

PRINTED WIRING BOARD...............................................................................................................................9

CIRCUIT DIAGRAM...........................................................................................................................................17

BLOCK DIAGRAM.............................................................................................................................................29

EXPLODED VIEW.............................................................................................................................................31

REPLACEMENT PARTS LIST..........................................................................................................................35

SPECIFICATIONSANDPARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

MINI COMPONENT HI-FI SYSTEM

September 2000

ENGLISH

SAFETY PRECAUTIONS

WARNING: The following precautions must be observed.

ALL PRODUCTS

Before any service is performed on the chassis an
isolation transformer should be inserted between the
power line and the product.

1. When replacing the chassis in the cabinet, ensure
all the protective devices are put back in place.

2. When service is required, observe the original
lead dressing. Extra precaution should be taken to
ensure correct lead dressing in any high voltage
circuitry area.

3. Many electrical and mechanical parts in
HITACHI products have special safety related
characteristics. These characteristics are often not
evident from visual inspection, nor can the
protection afforded by them necessarily be
obtained by using replacement components rated
for higher voltage, wattage, etc. Replacement
parts which have these special safety
characteristics are identified by marking with a

 on the schematics and the replacement parts
list.
The use of a substitute replacement component
that does not have the same safety characteristics
as the HITACHI recommended replacement one,
shown in the parts list, may create electrical
shock, fire, X-radiation, or other hazards.

4. Always replace original spacers and maintain lead
lengths. Furthermore, where a short circuit has
occurred, replace those components that indicate
evidence of overheating.

5. Insulation resistance should not be less than 2M
ohms at 500V DC between the main poles and
any accessible metal parts.

6. No flashover or breakdown should occur during
the dielectric strength test, applying 3kV AC or

4.25kV DC for two seconds between the main
poles and accessible metal parts.

7. Before returning a serviced product to the
customer, the service technician must thoroughly
test the unit to be certain that it is completely safe
to operate without danger of electrical shock. The
service technician must make sure that no
protective device built into the instrument by the
manufacturer has become defective, or
inadvertently damaged during servicing.

CE MARK

1. HITACHI products may contain the CE mark on
the rating plate indicating that the product
contains parts that have been specifically
approved to provide electromagnetic
compatibility to designated levels.

2. When replacing any part in this product, please
use only the correct part itemised in the parts list
to ensure this standard is maintained, and take
care to replace lead dressing to its original state,
as this can have a bearing on the electromagnetic
radiation/immunity.

PICTURE TUBE

1. The line output stage can develop voltages in
excess of 25kV; if the E.H.T. cap is required to be
removed, discharge the anode to chassis via a
high value resistor, prior to its removal from the
picture tube.

2. High voltage should always be kept at the rated
value of the chassis and no higher. Operating at
higher voltages may cause a failure of the picture
tube or high voltage supply, and also, under
certain circumstances could produce X-radiation
levels moderately in excess of design levels. The
high voltage must not, under any circumstances,
exceed 29kV on the chassis (except for projection
Televisions).

3. The primary source of X-radiation in the product
is the picture tube. The picture tube utilised for
the above mentioned function in this chassis is
specially constructed to limit X-radiation. For
continued X-radiation protection, replace tube
with the same type as the original HITACHI
approved type

4. Keep the picture tube away from the body while
handling. Do not install, remove, or handle the
picture tube in any manner unless shatterproof
goggles are worn. People not so equipped should
be kept away while picture tubes are handled

LASERS

If the product contains a laser avoid direct exposure to
the beam when the cover is open or when interlocks are
defeated or have failed.

AX-F100

• The caution labels on laser usage • Notices de précautions d’emploi du laser

CLASS 1 LASER PRODUCT
LUOKAN 1 LASERLAITE
KLASS 1 LASERAPPARAT

CLASS 1 LASER PRODUCT
LUOKAN 1 LASERLAITE
KLASS 1 LASERAPPARAT

Check that exposed parts are acceptably insulated from
the supply circuit before returning the repaired instrument
to the customer.

• Checking method

Measure the resistance value between the both poles of
attachment cup (Power supply plug) and the exposed
parts (Parts such as Knob, Cover, etc. where the cus­tomer is easy to touch.) and check that the resistance
value is 500 kohms or more.

INSTRUMENT

(Exposed part)

Insulation tester (DC 500V)

 2 

SAFETY PRECAUTIONS

The following precautions should be observed when servicing.

1. Since many parts in the unit have special safety-related characteristics, always use genuine Hitachis replacement
parts. Especially critical parts in the power circuit block should not be replaced with other makers. Critical parts
are marked with in the circuit diagram.

2. Before returning a repaired unit to the customer, the service technician must thoroughly test the unit to ascertain
that it is completely safe to operate without danger of electrical shock.

SPECIFICATIONS• SPECIFICATIONS

 RECEIVER SECTION

Tuner Range : FM: 87.5 - 108.0 MHz (0.1 MHz step)  UC

: FM: 87.50 - 108.00 MHz (0.05 MHz step)  E, EBS, W, WUN
: MW: 520 - 1,710 kHz (10 kHz step)  UC, W, WUN
: MW: 522 - 1,611 kHz (9 kHz step)  E, EBS, W, WUN
: LW: 153 - 281 kHz (1 kHz step)  E, EBS

 CD SECTION

Sampling Frequency : 44.1 kHz
Laser : Semiconductor laser

AX-F100

 TIMER SECTION

System : Digital Quartz Clock
Display Format : 24-hour cycle  E, EBS, W, WUN

12-hour cycle  UC

Timer Accuracy : Within 60 seconds at monthly rate in normal room temperature

 GENERAL SPECIFICATIONS

Power Supply : AC 110 - 127 V/220 - 240 V, 50/60 Hz  W, WUN

: AC 120 V, 60 Hz  UC
: AC 230 V, 50 Hz  E, EBS

Power Consumption : 48 W (ECO-ON mode: less than 1 W)  E, EBS, W, WUN

: 1.1 A include AC outlet (ECO-ON mode: less than 1 W)  UC
Rated Output Power : 30 W + 30 W (6 ohms, THD 10%)
Inputs/Outputs : MD, TAPE, AUX, Optical Digital Out, Pre out, Headphone, System Connector

 SPEAKER SECTION

System : 2 Way Bass Reflex Speaker System

Speaker Unit : Woofer: 10 cm ∞ 1, Tweeter: 5 cm ∞ 1

Impedance : 6 ohms

 DIMENSIONS

HCU-R30 Unit : 210 (W) ∞ 120 (H) ∞ 325 (D) mm
Speaker Unit : 150 (W) ∞ 275 (H) ∞ 227 (D) mm

 WEIGHT

HCU-R30 Unit : 4.4 kg
Speaker Unit : 3.0 kg (1 speaker)

 ACCESSORY SUPPLIED : FM Antenna, AM LOOP Antenna,

Remote Control (RB-AXF3), Battery,
Edison plug adapter (For W, WUN only)

* Specifications are subject to change for performance improvement without notice.

 3 

AX-F100

SERVICE POINTS

1. Removal of Top Cover

(1) Remove 4 screws 1 from each side.
(2) Remove 4 screws 2 from the rear plate.

Top cover

1

1

2

Fig. 1

3. Removal of Tuner P.W.B Board

(1) Remove 2 screws 5.
(2) Pull the tuner P.W.B gently to detach from

connector A of the main PCB.

2. Removal of Rear Plate and Power Cord

(1) Remove 11 screws 3 and 4 from the rear plate.
(2) Detach the power cord.

1

3

4

4

2

3

Power cord

5

9

7

8

10

6

11

Fig. 2

Fig. 3

5

Connector A

 4 

4. Removal of Front Panel

(1) Detach connector B & C (Refer to Fig. 5-2)
(2) Remove 3 screws 6 from base of front panel.
(3) Remove 1 screw 7 from each side and screw 8.
(4) Release the claw of the Inner panel from each side.

6

7

8

Fig. 4-1

Claw

AX-F100

Fig. 4-2

7

5. Removal of Front P.W.B Board

(1) Remove the volume knob to detach the nut.
(2) Remove 13 screws 9.

Fig. 5-1

Volume knob

9

Nut

Connector B

Fig. 5-2

Connector C

 5 

AX-F100

6. Removal of Main P.W.B Board and Power Transformer

(1) Detach the connector D to K.
(2) Remove 4 screws ! from base of the plate and 4

screws ".

(3) Press and push downwards the P.W.B. support.
(4) Gently pull the main P.W.B. upwards and remove

the Power Transformer.

No. CONNECTOR

D CN702
E CN701

F PG301
G PG302
H PG501
I PG601
J CN501
K PG505
L PG602

"

!

K

D

P.W.B. Support

I

J

E

H

G

F

Fig. 6-1

L

7. Removal of Amp P.W.B. Board

(1) Remove 1 screw #.
(2) Remove 4 screws $ from base of chassis.

Fig. 6-2

#

Fig. 7-1

$

 6 

Fig. 7-2

8. Removal of P.W.B. Holder
(1) Remove 3 screws % to detach the P.W.B. Holder.

AX-F100

%

%

Fig. 8

9. Removal of CD Mechanism Assembly
(1) Remove 4 screws & and pull up the CD mechanism.

&

Fig. 9

 7 

AX-F100

WIRING DIAGRAM

FFC CABLE INSERTION

ILLUSTRATION B

ILLUSTRATION A

CN701

CN901A

CN9018 CD MECHA

AC-OUTLET PWB

W11A

W8B

2P PH-SAN CONN

11CN601

CN602

CN505

1

2P MX CONN

BRN

WHT

5P PH-SAN CONN

PG503

1

CN501

RED

W9B

RED

GRY

AMP PWB

I/0 PWB

CN302 1 CN301 1

W7A W6A

FOR W/WUN

VOL-SEL PWB

3P PH-SAN CONN

W3B

W2B

BLK RED YEL

W1B

5001

11P PH-SAN CONN

CN502

CN504A

3P TXL CONN

TH PWB

AC1

3P DA-DA CONN

CN504B

10P PH-SAN CONN

8P PH-SAN CONN

PG302 1 PG301 1

PG501

1

W5AW9A

RED

PG001

1

CN201A

TU PWB

18P B-B

TO CD MECHA

REFER TO ILLUSTRATION B FOR DETAILS

CA701(30P FFC CABLE)

CN201B

1

1

PG602

CN701 1

MAIN PWB

WHT

1

1

RED

W4A

YEL

RED

W2A

W3A

BRN

W11B

GRY

RED

TRANS PWB

PG601

W8A

(FOR UC/E/EBS ONLY)

ORG

W1A

BLK

ORG

W4B

W7B

W6B

3P MX CONN

W5B

RED

CN003

PG003

PG002

CN002

2P TXL CON

2P MX CONN

1

REDBLUBLKBLURED

CN702

5P VH CONN

1

CN901A

1

PG502

2P PH-SAN CONN

PG505
1

11P PH-SAN CONN

CA901 (18P FFC CABLE)

REFER TO ILLUSTRATION A FOR DETAILS

CN901B

FL PWB

CN503

5P PH-SAN CONN

 8 

PRINTED WIRING BOARD

AX-F100

Soldering SideComponent Side

TU PWB

 9 

AX-F100

Component Side

MAIN PWB

 8 

Soldering Side

AX-F100

MAIN PWB

 9 

AX-F100

Component Side

I/O P.W.B.

FL PWB

AC OUTLET P.W.B.

 12 

Soldering Side

AX-F100

I/O P.W.B.

FL PWB

AC OUTLET P.W.B.

 13 

AX-F100

Component Side

AMP PWB

TH P.W.B.

TRANS P.W.B.

VOL-SEL P.W.B.

 14 

Soldering Side

AX-F100

AMP PWB

TH P.W.B.

TRANS P.W.B.

VOL-SEL P.W.B.

 15 

AX-F100

 16 

CIRCUIT DIAGRAM

MAIN/POWER Circuit

AX-F100

 18  17 

 19 

AX-F100

CIRCUIT DIAGRAM

—FL DISP. Circuit

 21 

 22  20 

CIRCUIT DIAGRAM

TUNER Circuit

AX-F100

 24 

 25  23 

AX-F100

 28  26   27 

BLOCK DIAGRAM (MAIN)

Q309, Q310

LR MUTE

Q307, Q308

L, R MUTE

JK 302

MD OUTMD INAUX

JK 301

TAPE OUTTAPE IN

IC 303 BU4066BCF

TA/MD REC SW

IC501

STK 402-405

POWER AMPLIFIER

Q505

MUTE

JK501

H.PHONE

JK502

MONO

OUT

RY501

SPEAKER

AX-F100

JK503

SP TERMINAL

RELAY

Q305, Q306

L,R MUTE

IC302

BU4066BCF

TA/MD FUNC SW

JK602

OPT

OUT

IC301 LC75342

FUNC SW,

EQUALIZER &

ELECT VOLUME

CONTROL

JK601

SYSTEM

BUS

T203,

T204

19 KHz

LPF

Q105,

Q106, Q107, Q108

FM MPX

AM/FM IF

L,RMUTE

IC601

µ–con

MN101C12GPT

( E & EBS ONLY )

IC201

LA1838

AM RF MIX

CD MECHA

IC603

KIA7045

RESET

IC901

LC75725E

FLD DRIVER

FL901

FL DISPLAY

Q102,

FE101

JK 101

Q103,IFAMP

B.P.F

FM RF

AMP &

OSC MIX

FM ANTAM ANT

IC101

LC72131M

BL1AMRF

PLL

 29 

IC251

LC72720NM

RDS

IC602

EEPROM

BR9040F

KEY

RE 901

(E/EBS & UC ONLY)

ENCODER

AX-F100

BLOCK DIAGRAM (POWER)

F003

F001

AC OUTLET JK001

S001

VOLT AGE

FOR W,WUN ONLY

SELECTOR

Q005

KTA1267

FOR W,WUN ONLY

PT1

POWER

TRANSFORMER

D011

RECT

F002

D012

RECT

SUB

PT001

TRANSFORMER

RECT

D002~D005

FLD

~3.5V

FILAMENT

µ-CON/EEPROM/

IC001

KIA7805

+5V

RESET

IC004

40V

40V

+

-

SUPPLY

-27V

IC501

+23V

POWER

AMPLIFIER

SUPPLY

-23V

SWITCHING

+12V

IC301~303

KIA7812

& TUNER

SUPPLY

IC003

KIA7809

+9V

CD MOTOR

SUPPLY

CD SUPPLY/

IC002

KIA7806

+6V

FLD DRIVER/BUS/

TUNER SUPPLY

FLD

 30 

EXPLODED VIEW (Cabinet Chassis)

• Nos. are reference Nos. of part list

AX-F100

33

48

24

[FOR W, W(UN)]

23

2

FL DISP PWB

26

1

TRANSFORMER

TU PWB

MAIN PWB

34

34

27

35

36

32

30

AMP PWB

2

13

12

12

12

39

37

38

46

28

40

14

11

6

8

10

9

7

15

4

44

16

17

43

42

4

43

42

31

41

45

3

42

41

43

29

25

43

42

41

25

18

19

20

18

22

[FOR E, E(BS)]

22

[FOR W, W(UN)]

47

20

20

20

21

5

41

 32  31 

THE UPDATED PARTS LIST

FOR THIS MODEL IS

AVAILABLE ON ESTA

Hitachi, Ltd. Tokyo, Japan

International Sales Division

THE HITACHI ATAGO BUILDING,

No. 15 –12 Nishi Shinbashi, 2 – Chome,

Minato – Ku, Tokyo 105-8430, Japan.

Tel: [phone]

HITACHI EUROPE LTD,

Whitebrook Park
Lower Cookham Road
Maidenhead
Berkshire
SL6 8YA

UNITED KINGDOM

Tel: [phone]
Fax: [phone]
Email: [e-mail]

HITACHI EUROPE GmbH

Munich Office
Dornacher Strasse 3
D-85622 Feldkirchen bei München

GERMANY

Tel: [phone]
Fax: [phone]
Hotline: [phone] (12ct/min)
Email: [e-mail]

HITACHI EUROPE srl

Via Tommaso Gulli N.39, 20147
Milano, Italia

ITALY

Tel: [phone]
Tel: [phone] Servizio Clienti
Fax: [phone]

Email: [e-mail]

HITACHI EUROPE S.A.S

Lyon Office
B.P. 45, 69671 BRON CEDEX
FRANCE
Tel: [phone]
Fax: [phone]
Email: [e-mail]

HITACH EUROPE AB

Egebækgård
Egebækvej 98
DK-2850 Nærum

DENMARK

Tel: [phone]
Fax: [phone]
Email: [e-mail]

Hitachi Europe Ltd

Bergensesteenweg 421
1600 Sint- Pieters-Leeuw

BELGIUM

Tel: [phone]
Fax: [phone]
Email: [e-mail]

www.hitachidigitalmedia.com

HITACHI EUROPE S.A.

364 Kifissias Ave. & 1, Delfon Str.
152 33 Chalandri
Athens

GREECE

Tel: [phone]
Fax: [phone]
Email: [e-mail]

HITACHI EUROPE S.A.

Gran Via Carlos III, 101- 1
08028 Barcelona

SPAIN

Tel: [phone]
Fax: [phone]
Email: [e-mail]

HITACHI Europe AB
Box 77 S-164 94 Kista

SWEDEN

Tel: [phone]
Fax: [phone]
Email: [e-mail]

HITACHI EUROPE LTD (Norway) AB
STRANDVEIEN 18
1366 Lysaker
NORWAY
Tel: [phone]
Fax: [phone]
Email: [e-mail]

HITACHI EUROPE AB

Neopoli / Niemenkatu 73
FIN-15140 Lahti

FINLAND

Tel : [phone]
Fax: [phone]
Email: [e-mail]

HITACHI EUROPE LTD

Na Sychrove 975/8
101 27 Praha 10 – Bohdalec

CZECH REPUBLIC

Tel: [phone]
Fax: [phone]
Email: [e-mail]