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CAUTION:
Before servicing this chassis, it is important that the service technician read the "Safety
Precautions" and "Product Safety Notices" in this service manual.
ATTENTION:
Avant d'effectuer l'entretien du châassis, le technicien doit lire les «Précautions de sécurité»
et les «Notices de sécurité du produit» présentés dans le présent manuel.
VORSICHT:
Vor Öffnen des Gehäuses hat der Service-Ingenieur die ,,Sicherheitshinweise" und ,,Hinweise
zur Produktsicherheit" in diesem Wartungshandbuch zu lesen.
SERVICE MANUAL
MANUEL D'ENTRETIEN
WARTUNGSHANDBUCH
Data
contained
within
this
Service
manual is subject to alteration for
improvement.
Les données fournies dans le présent
manuel d'entretien peuvent faire l'objet
de modifications en vue de perfectionner
le produit.
Die
in
diesem
Wartungshandbuch
enthaltenen Spezifikationen können sich
zwecks Verbesserungen ändern.
OCTOBER 2000
MINI COMPONENT HI-FI SYSTEM
HCUR700UC
HCUR700E
HCUR700EBS
HCUR700W
SM0104
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
CONTENTS
SPECIFICATIONS ...............................................................................................................................................3
SERVICE POINTS..............................................................................................................................................4
WIRING DIAGRAM.............................................................................................................................................17
PRINTED CIRCUIT BOARD..............................................................................................................................21
EXPLODED VIEW ..............................................................................................................................................83
REPLACEMENT PARTS LIST...........................................................................................................................87
ADJUSTMENTS & MEASUREMENT ..................................................................................................................11
CIRCUIT DIAGRAM............................................................................................................................................43
BLOCK DIAGRAM ..............................................................................................................................................79


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HCU-R700
­ 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 and printed wiring board.
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.
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)


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HCU-R700
­ 3 ­
SPECIFIC ATIONS
· AV SURROUND RECEIVER SECTION (HTA-R150)
Reception frequency band
: UC
FM: 87.5 ~ 108.0 MHz (100 kHz step)
AM: 520 ~ 1710 kHz (10 kHz step)
E, EBS FM: 87.50 ~ 108.00 MHz (50 kHz step)
AM: 522 ~ 1611 kHz (9 kHz step)
W
FM: 87.50 MHz - 108.00 MHz (50 kHz step)
AM: 522 ~ 1611 kHz (9 kHz step)
520 kHz - 1710 kHz (10 kHz step)
Rated output power
: Front: 25W + 25W (6
/ohms, 50 Hz - 15 kHz with 0.7% T.H.D.)
: Center: 25W (6
/ohms, 50Hz - 15kHz with 0.7% T.H.D.)
: Rear: 25W + 25W (6
/ohms, 50Hz - 15kHz with 0.7% T.H.D.)
: Front: 30W + 30W (6
/ohms, 1 kHz with T.H.D. 10%)
: Center: 30W (6
/ohms, 1 kHz with T.H.D. 10%)
: Rear: 30W + 30W (6
/ohms, 1 kHz with T.H.D. 10%)
Audio input / output jacks
: Input jacks: DVD, TV/DBS, VCR, MD/TAPE, VIDEO AUX
Output jacks: VCR, MD/TAPE
Audio digital input jacks
: OPTICAL 1, OPTICAL 2
Video input / output jacks
: Input jacks: DVD, TV/DBS, VCR, AUX
: Output jacks: VCR, MONITOR
Power supply
: UC
: AC 120V 60Hz
E, EBS : AC 230V 50Hz
W
: AC 110 ~ 127V 50/60Hz
: AC 220 ~ 240V 50/60Hz
Power consumption
: UC
: 180W (include AC OUTLET : 60W)
E, EBS : 115W
W
: 115W
STANDBY : 0.8W
Maximum external dimensions
: 210 (W) x 120 (H) x 324 (D) mm (including feet, controls and terminals)
Weight
: 5.3 kg
Timer
: Digital Quartz Clock.
Display Format: 24-hour cycle. (E, EBS, W), 12-hour cycle (UC)
Timer accuracy: Within 60 seconds at the monthly rate.
· DVD/CD/VIDEO CD PLAYER SECTION (HDV-R100)
Applicable discs
: DVD discs: 12cm discs (1 layer and 2 layer)
8cm discs (1 layer and 2 layer)
Compact discs (CD-DA Video CD): 12cm discs, 8cm discs
Audio output jacks
: AUDIO OUT (Fixed output level: 2Vrms)
Digital output jacks
: OPTICAL
Video output jacks
: VIDEO OUT, S VIDEO OUT, COMPONENT VIDEO OUT
Video output level
: VIDEO OUT: 1V
p-p (75/ohms)
S VIDEO: Y; 1V
p-p (75/ohms), C; 0.3Vp-p (75/ohms)
COMPONENT: Y; 1V
p-p (75/ohms), CB; 0.7Vp-p (75/ohms)
CR; 0.7V
p-p (75/ohms)
Audio frequency response
: DVD: 2 Hz to 22 kHz (48 kHz sampling), 2 Hz to 44 kHz (96 kHz sampling)
CD: 2 Hz to 22 KHz (44.1 kHz sampling)
Power supply
: UC
: AC 120V 60Hz
E, EBS : AC 230V 50Hz
W, WUN: AC 110 ~ 127V 50/60Hz
: AC 220 ~ 240V 50/60Hz
Power consumption
: 14W
Maximum external dimensions
: 210(W) x 96.5(H) x 309(D) mm (including feet, controls and terminals)
Weight
: 2.8 kg
· REMOTE CONTROL SECTION
Remote control unit
: RB-HTAR150 (for systems), RB-HDVR100 (for HDV-R100)
Remote control system
: Infrared pulse
Power supply
: Two DC 1.5V R6P/AA batteries
* Specifications are subject to change for performance improvement without notice.


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HCU-R700
­ 4 ­
1. Removal of Top Cover
(1) Remove 4 screws
1 from each side.
(2) Remove 4 scre
ws
2 from the rear plate.
SER V ICE POINTS
·
AV SURROUND RECEIVER (HTA-R150)
2. Removal of Front Panel
(1) Remove 4 screws
5 from the bottom of the front panel.
(2) Remove 2
screws
3 and 2 catches from both side.
(3) Remove 2 s
crews
4.
(4) Remove Con
nector
A.
(5) Remove 2
screws
6 of P.W.B. bracket to remove
Connec
tor
B to H .
B
C
D
G
H
E
F
5
4
3
3
4
Catch
Catch
Fig. 2
Fig. 4
Fig. 3
6
A
Fig. 1
1
2
1


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HCU-R700
­ 5 ­
Fig. 6
Fig. 5
4. Removal of Power Transformer
(1) Remove the 4 screws
8 .
(2) Remove Connec
tor
I to K.
3. Removal for Rear Panel
(1) Remove 20 scr
ews
7.
7
8
I
J
K