Hitachi AXF100E User manual

CAUTION:
Beforeservicing this chassis, itisimportantthat the servicetechnician read the“Safety
Precautions”and“ProductSafetyNotices”inthisservicemanual.
ATTENTION:
Avantd’effectuerl’entretienduchâassis,letechniciendoitlireles«Pr cautionsdes curit »
etles«Noticesdes curit duproduit»pr sent sdanslepr sentmanuel.
VORSICHT:
VorÖffnendesGehäuseshatderService-Ingenieurdie„Sicherheitshinweise“und„Hinweise
zurProduktsicherheit“indiesemWartungshandbuchzulesen.
SERVICE MANUAL
MANUEL D'ENTRETIEN
WARTUNGSHANDBUCH
Data contained within this Service
manual is subject to alteration for
improvement.
Les donn es fournies dans le pr sent
manueld’entretienpeuventfairel’objet
demodificationsenvuedeperfectionner
leproduit.
Die in diesem Wartungshandbuch
enthaltenenSpezifikationenkönnensich
zwecksVerbesserungenändern.
September 2000
MINI COMPONENT HI-FI S STEM
AX-F100E
AX-F100EBS
AX-F100UC
AX-F100W
AX-F100WUN
SM0100
SPECIFICATIONSANDPARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
CONTENTS
SPECIFICATIONS...............................................................................................................................................3
SERVICEPOINTS..............................................................................................................................................4
WIRING DIAGRAM.............................................................................................................................................8
PRINTED WIRING BOARD...............................................................................................................................9
CIRCUIT DIAGRAM...........................................................................................................................................17
BLOCK DIAGRAM.............................................................................................................................................29
EXPLODED VIEW.............................................................................................................................................31
REPLACEMENT PARTS LIST..........................................................................................................................3

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. xtra 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 C 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 .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
 2 
• The caution labels on laser usage • Notices de précautions d’emploi du laser
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 cus-
tomer is easy to touch. and check that the resistance
value is 500 kohms or more.
INSTRUMENT
(Exposed part)
Insulation tester (DC 500V)
CLASS 1 LASER PRODUCT
LUOKAN 1 LASERLAITE
KLASS 1 LASERAPPARAT
CLASS 1 LASER PRODUCT
LUOKAN 1 LASERLAITE
KLASS 1 LASERAPPARAT

AX-F100
 3 
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
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.

AX-F100
 4 
Power cord
1
3
45
29
8
76
10
11
3
4
Top cover
1
2
1
Fig.1
Fig.3
Fig.2
1. Removal of Top Cover
(1 Remove 4 screws 1 from each side.
(2 Remove 4 screws 2 from the rear plate.
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.
SERVICE POINTS
2. Removal of Rear Plate and Power Cord
(1 Remove 11 screws 3 and 4 from the rear plate.
(2 Detach the power cord.
5
Connector A

AX-F100
 5 
6
8
Fig.4-1
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.
5. Removal of Front P.W.B Board
(1 Remove the volume knob to detach the nut.
(2 Remove 13 screws 9.
7
7
Claw
Fig.4-2
Volume knob
Nut
9
Connector B
Connector C
Fig.5-1
Fig.5-2

AX-F100
 6 
$
#
"
Fig.7-1
7. Removal of Amp P.W.B. Board
(1) Remove 1 screw #.
(2) Remove 4 screws $ from base of chassis.
Fig.6-1
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 p sh downwards the P.W.B. s pport.
(4) Gently p ll the main P.W.B. pwards 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
Fig.7-2
!
K
DE
JIHGF
L
P.W.B. Support
Fig.6-2

AX-F100
 7 
&
%%
9. Removal of CD Mechanism Assembly
(1) Remove 4 screws & and p ll p the CD mechanism.
8. Removal of P.W.B. Holder
(1) Remove 3 screws % to detach the P.W.B. Holder.
Fig.8
Fig.9

AX-F100
 8 
WIRING DIAGRAM
TU PWB
MAIN PWB
TRANS PWB
FL PWB
AMP PWB
TH PWB
I/0 PWB
VOL-SEL PWB
FORW/WUN
AC-OUTLET PWB
CN201A
18P B-B
TO CD MECHA
11P PH-SAN CONN 5P PH-SAN CONN
PG503
1
1
1CN601
CN501
3P DA-DA CONN
3P PH-SAN CONN 3P TXL CONN
10P PH-SAN CONN
8P PH-SAN CONN
CN302 1 CN301 1
CN504B
PG501
PG602
2P TXL CON
CN901A
11P PH-SAN CONN
2P PH-SAN CONN 5P VH CONN
PG002
PG601
W8A
W4A
PG001
5001
W5AW9A
BLK RED YEL
W2A W3A
GRY
AC1
W7A W6A
RED
RED
W9B
W1A
BLK
ORG
W11B
W4B
W7B
W6B
W5B RED
3P MX CONN
WHT
5P PH-SAN CONN
CN503
PG502
CN901B
1
1
1
1
1
1
PG505
PG003
ORG
(FOR UC/E/EBS ONLY)
YEL
RED
RED
CN003
CN002
REDBLUBLKBLURED
GRY
BRN
RED RED
W1B
W2B WHT
BRN
W8B
W11A
W3B
2P MX CONN
1
1
1
1
CN201B
CN701 1
CN702
CA701(30P FFC CABLE)
REFER TO ILLUSTRATION B FOR DETAILS
CA901 (18P FFC CABLE) REFER TO ILLUSTRATION A FOR DETAILS
PG302 1 PG301 1
2P MX CONN CN602
CN504A
CN502
CN505
1
2P PH-SAN CONN
FFC CABLE INSERTION
ILLUSTRATION A
CN901A ILLUSTRATION B
CN701
CN9018 CD MECHA

AX-F100
 9 
PRINTED WIRING BOARD
TU PWB
Soldering SideComponent Side

AX-F100
 8 
Component Side
MAIN PWB

AX-F100
 9 
MAIN PWB
Soldering Side

AX-F100
 12 
Component Side
FL PWB
I/O P.W.B.
AC OUTLET P.W.B.

AX-F100
 13 
FL PWB
Soldering Side
I/O P.W.B.
AC OUTLET P.W.B.

AX-F100
 14 
Component Side
AMP PWB
VOL-SEL P.W.B.
TRANS P.W.B.
TH P.W.B.

AX-F100
 15 
Soldering Side
AMP PWB
TRANS P.W.B. VOL-SEL P.W.B.
TH P.W.B.

AX-F100
 16 

AX-F100
 18  17 
CIRCUIT DIAGRAM
MAIN/POWER Circuit
 19 

AX-F100
 22  20 
CIRCUIT DIAGRAM
—FL DISP. Circuit
 21 

AX-F100
 25  23 
CIRCUIT DIAGRAM
TUNER Circuit
 24 