Hitachi D-RV7 Servicehandbuch

@HITACHI
SERVICE MANUAL
2 3
CONTENTS INHALTSVERZEICHNIS
REGLER
KEY TO ILLUSTRATIONS
2
BEDIENUNGSELEMENTE
SPECIFICATIONS . 2
TECHNISCHE
FEATURES . 4
MAJOR FUNCTIONS AND HANDLING MERKMALE
HAUPTFUNKTIONEN
METHOD . 5
8 HAN DHABUNG
DISASSEMBLY
ADJUSTMENTS 12 DEMONTAGE
EINSTELLUNGEN
.21
LUBRICATION
DESCRIPTION OF NEW PARTS . . 22 SCHMIERUNG
BESCHREIBUNG
DESCRIPTION OF NEW
35 BESCHREIBUNG
MECHANISM . .
DESCRIPTION OF NEW CIRCUIT . MECHANISMUS
41
BESCHREIBUNG
BLOCK DIAGRAM 42
STROMKREISES
PRINTED WIRING BOARD 43
BLOCKSCHEMA
CIRCUIT DIAGRAM 45
WIRING DIAGRAM 47 PRINTPLAITEN
SCHALTPLAN
EXPLODED VIEW .
49
VERDRAHTUNGSSCHEME
REPLACEMENT PARTS LIST . 53
EXPLOSIONSANSICHT
ERSATZTEILLISTE
SPECIFICATIONS AND PARTS ARE
STEREO CASSETTE TAPE DECK
December 1982
TY
No. 353EGF
D-RV7
O
4
cot:
9 8
TABLE DES MATIÉRES
UND GUIDE DES I L LUSTRATIONS
. FICHE TECHNIQUE
2
CARACTÉRISTIQUES
DATEN 3
FONCTIONS PRINCIPALES
4
MÉTHODE D'UTILISATION
UND
DÉMONTAGE
6
MÉTHODES DE RÉGLAGE
. 10
LUBRIFICATION
.15
DESCRIPTION DES NOUVELLES
. . 21
PiÉCES
DER NEUEN TEILE . 22
DESCRIPTION DES NOUVEAUX
DES NEUEN
MÉCANISMES
. 37
DESCRIPTION DES NOUVEAUX
DES NEUEN
CIRCUITS
. 41
SCHÉMA
. 42
PLAN DE BASE
43
PLAN DE CIRCUIT
45
SCHÉMA DE CÄBLAGE
47
VUE EXPLOSEE .
. 49
TABLEAU DES PIÉCES
53
SUBJECT TO CHANGE FOR IMPROVEMENT.
TOYOKAWA WORKS
KEY TO ILLUSTRATIONS
O
POWER SWITCH
EJECT BUTTON
OPERATION BUTTONS
TAPE COUNTER / RESET BUTTON
4
PEAK LEVEL INDICATOR
5
DOLBY NR SWITCH
6
DOLBY NR BIC SELECT SWITCH
7
HEADPHONE JACK
MICROPHONE JACKS
9
MULTI-REPEAT BUTTON
PROGRAM MEMORY BUTTON
SCANAPLAY BUTTON
RECORDING LEVEL CONTROL
KNOB
REC MUTE BUTTON
MODE SELECTOR
MODE INDICATOR
TIMER SWITCH
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
Critical parts are marked withåin
2. Before returning a repaired unit to the customer. the service technician must thoroughly test the unit to ascertain that it is com-
pletelv safe to operate without danger of electrical
2
3
4
ET
SPECIFICATIONS
7
.11
18
.21
Track System: 4 track
Tape: Cassette
. 22
Tape Speed: 4.75 cm/s
Recording system and
39 Bias Frequency: AC bias, 85 kHz
Erasing System: AC erase
65 dB (at 1
Erase Ratio:
41
Frequency Response: NOR-I:
42
43
. 45
Croa-ll:
47
. 49
. 53
METAL-IV:
S/N (Signal to Noise
Ratio):
Dolby B NR ON:
Dolby C NR ON:
Dolby NR OFF: 60 dB•
A weighted.
According
Regler und Bedienungselemente Guide des illustrations
Netzschalter
Cassettenauswurftaste
Funktionstasten
3
4 Bandzählwerk/Rückstellknopf 4
Spitzenwertanzeige
6 R-Schalter
Dolby-NR-B/C-Wahlschalter
7 6
Kopfhörerbuchse
Mikrofonbuchse
9 8
Multi•Repeat-Taste
9
Programmspeichertaste
ScanapIay-Taste
Aufnahmepegelregler
REC-Mute-Taste
Betriebsartenwähler
Laufanzeige
Zeitschalter
block should not be replaced with other makers.
the circuit
shock.
2 channel stereo Wow and Flutter:
tape
Input Sensitivity
and Impedance:
kHz) or more
20 Hz to 16 kHz
40 Hz to 14 kHz
(According to DIN 45 Output Level:
500)
Output Load
20 Hz to 18 kHz I mpedance:
40 Hz to 15 kHz
(According to DIN .45
500)
Distortion:
20 Hz to 19 kHz Crosstalk:
40 HZ to 17 kHz Power Supply:
(According to DIN 45
500)
68 dB'
74
Power Consumption:
Reference 3% Dimensions:
Weight:
to DIN 45 500
Specifications are subject to change without
improvement.
D-RV7
Interrupteur d 'al imentation
Touche d'éjection de cassette
Touches d'opération
Compteur de bande/poussoir de remise å
zéro
Indicateur de niveau de créte
Interrupteur de réducteur de bruit Dolby
Sélecteur de circuit Dolby B/C
Prise pour casque d'écoute
Prise de microphone
Touche de répétition multiple
Touche de mémorisation de programme
Touche de recherche et lecture
Réglage de niveau d'enregistrement
Touche de sourdine å l'enregistrement
Sélecteur de mode
Témoin de mode de défiiement
Interrupteur de minuterie
0.04% (WRMS)
0.13% (According to DIN 45 500)
Microphone: 0.54 mV
(Suitable Microphone
impedance 300 ohms to
5 kohms)
Line in; 97 mV 50 kohms
or more
500 mV
Line out: 50 kohms or more
Headphone: 8 ohms to
2 kohms (Suitable)
Less than I (I kHz 160 nWb/m)
60 dB (at I kHz) or more
AC 120V.60 Hz (U, C)
AC 100—110V, 115—127V
200—220V, 230—250V,
50/60 Hz (W)
AC 220V,50 Hz (FS)
AC 240V, 50 Hz (BS, AU)
22W
435 (W) x 1 10 (H) x 272 (D) mm
4.7 kg
notice for performance