Hitachi HCUR700UC User manual

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 «Pr cautions de s curit »
et les «Notices de s curit du produit» pr sent s dans le pr sent 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 donn es fournies dans le pr sent
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 ..............................................................................................................................................7

HCU-R700
– 2 –
SAFETY PRECAUTIONS
The following precautions should be observed when servicing.
1. Sincemanypartsintheunithavespecialsafety-relatedcharacteristics,alwaysusegenuineHitachi’sreplacement
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)

HCU-R700
– 3 –
SPECIFICATIONS
• 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 (6Ω/ohms, 50 Hz - 15 kHz with 0.7% T.H.D.)
: Center: 25W (6Ω/ohms, 50Hz - 15kHz with 0.7% T.H.D.)
: Rear: 25W + 25W (6Ω/ohms, 50Hz - 15kHz with 0.7% T.H.D.)
: Front: 30W + 30W (6Ω/ohms, 1 kHz with T.H.D. 10%)
: Center: 30W (6Ω/ohms, 1 kHz with T.H.D. 10%)
: Rear: 30W + 30W (6Ω/ohms, 1 kHz with T.H.D. 10%)
Audio input / output jacks : Input jacks: DVD, TV/DBS, VCR, MD/TAPE, VIDEOAUX
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
Powersupply : UC : AC 120V 60Hz
E, EBS : AC 230V 50Hz
W : AC 110 ~ 127V 50/60Hz
: AC 220 ~ 240V 50/60Hz
Powerconsumption : 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-DAVideo 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: 1Vp-p (75Ω/ohms)
S VIDEO: Y; 1Vp-p (75Ω/ohms), C; 0.3Vp-p (75Ω/ohms)
COMPONENT: Y; 1Vp-p (75Ω/ohms), CB; 0.7Vp-p (75Ω/ohms)
CR; 0.7Vp-p (75Ω/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)
Powersupply : UC : AC 120V 60Hz
E, EBS : AC 230V 50Hz
W,WUN: AC 110 ~ 127V 50/60Hz
: AC 220 ~ 240V 50/60Hz
Powerconsumption : 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
Powersupply : Two DC 1.5V R6P/AA batteries
* Specifications are subject to change for performance improvement without notice.

HCU-R700
– 4 –
1. Removal of Top Cover
(1)Remove 4 screws 1from each side.
(2)Remove 4 screws 2from the rear plate.
SERVICE POINTS
• AV SURROUND RECEIVER (HTA-R150)
2. Removal of Front Panel
(1)Remove 4 screws 5from the bottom of the front panel.
(2)Remove 2 screws 3and 2 catches from both side.
(3)Remove 2 screws 4.
(4)Remove Connector A.
(5)Remove 2 screws 6of P.W.B. bracket to remove
Connector Bto 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

HCU-R700
– 5 –
Fig. 6
Fig. 5
4. Removal of Power Transformer
(1)Remove the 4 screws 8.
(2)Remove Connector Ito K.
3. Removal for Rear Panel
(1)Remove 20 screws 7.
7
8
I
J
K

HCU-R700
– 6 –
5. Removal of P.W.B. Board.
(1)Remove 1 screw 9and 1 screw 10.
(2)Remove 2 screw 11.
(3)Remove 5 screws 12 from the bottom of chassis.
(4)Remove 2 pieces of P.W.B. holder afrom the bottom chassis.
12
a
Fig. 7
11
Fig. 8
9
10
Fig. 9

HCU-R700
– 7 –
6. Removal of Front P.W.B. Board.
(1)Pull the Volume knob away, and remove the nut.
(2)Pull out 2 Bass/Treble knobs and remove the nuts.
(3)Remove the Function knob.
(4)Remove 9 screws 13.
13
Fig. 11
Nut
Nut
Volume knob
Bass/Treble knob
Function knob
Fig. 10

HCU-R700
– 8 –
1. Removal of Top Cover
(1)Remove 2 screws 1from both side.
(2)Remove 4 screws 2from the rear panel.
• DVD/CD/VIDEO CD PLAYER (HDV-R100)
2. Removal of Front Panel
(1)Remove 4 screws 3from the bottom of the front panel.
(2)Remove 2 screws 4and 2 catches from both side.
(3)Remove Connector A and B.
Fig. 2
3
Fig. 3
4
4
Catch
Catch
A
B
1
1
2
Fig. 1

HCU-R700
– 9 –
4. Removal of Main P.W.B. Board
(1)Remove 4 screws 6.
(2)Remove Connector C and D.
3. Removal of Rear Panel
(1)Remove 6 screws 5.
5. Removal of Power Supply Board
(1)Remove 4 screws 7.
(2)Remove Connector E.
Fig. 4
5
Fig. 5
Main P.W.B Board
C
D
6
Fig. 6
7
E

HCU-R700
– 10 –
6. Removal of Deck Mechanism Assy
(1)Remove 4 screws 8to release the mechanism cover.
(2)Remove 4 screws 9.
7. Removal of Front P.W.B. Board
(1)Remove away the Front Metal.
(2)Pull out the Enter Button.
(3)Remove 9 screws 10.
Fig. 8
Fig. 9
Fig. 7
8
8
9
10
Enter Button
Front Metal