Hitachi MSW 600 Service Manual

Page 1

C93 HITACHI

SERVICE MANUAL

No. 607 EF

MS-W600
H, Hc, E, E(BS), ]
W, WIUN): WIAU)

TNu52fl ZSWDII 82

SPECIFICATIONS
MAINTENANCE
DISASSEMBLY..
ADJUSTMENTS .......................
INSPECTION OF MECHANISM...
LUBRICATION ..........................
DIAL CORD STRINGING..
DESCRIPTION OF NEW P
BLOCK DIAGRAM
CIRCUIT DIAGRAM .....
PRINTED WIRING BOARD
WIRING DIAGRAM .....
EXPLODED VIEW ..............
REPLACEMENT PARTS LI

IH, HC, E, EIBSI]

CONTENTS

[W, WIUNI. WIAUII

TABLE DES MATIERES

CARACTERISTIOUE TEQUNIQUES .....
ENTRETIEN ....................................

DEMONTAGE ..........
REGLAGE ........................................
INSPECTION DU MECANISME.... .....
LUBRIFICATION ....................................
MISE EN PLACE DU GORDON DE
DESCRIPTION DES NOUVELLES PIECES...
DIAGRAMME SYNOPTIOUE ...............
PLAN DE CIRCUIT ............
PLAN DE BASE .....
SCHEMA DE CABLAGE..-
VUE EXPLOSEE ...........
TABLEAU DES PIECES .....

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.

PORTABLE COMPONENT SYSTEM

L January 1989

YOKOHAMA WORKS

Page 2

MS-W600

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 re-
placement parts. Especially critical parts in the power circuit block should not be replaced with other makers.
Critical parts are marked with A 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.

SPECIFICATIONS
0 GENERAL
Power supply: AC120V, 60 Hz [for H, HC]

AC220V, 50 Hz [for E]

AC240V, 50 Hz [for E(BS)]

AC1 10-120/200-220/230-240V,

50/60 Hz [for W, W(UN), W(AU)]
Power consumption: 60W

Dimensions: 661 (W) x 316 (H) x 234 (D) mm

Weight: 8.7 kg

0 AMPLIFIER SECTION

Audio output: 15W/CH (10% T.H.D. AC operation)
[for E, E(BS)I

0 TUNER SECTION
Circuit system: FM/AM 2 bands
superheterodyne [for H. HC]
FM/MW/LW 3 bands
superheterodyne [for E, E(BS)]
FM/MW/SWZ/SW1 4 bands
superheterodyne
[for W, W(UN), W(AUH
Tuning range: FM 819-1019 MHz (100 kHz steps)
(for H, HC]
875-108 MHz (50 kHz steps)
[for E, E(BS)I
88-108 MHz
[for W, W(UN), W(AUll
AM (MW) 552-1,611 kHz
(9 kHz steps) [for E, EiBSH
5304.620 kHz (10 kHz steps)
[for H, HC]
530-1505 kHz (9/10 kHz steps)
[for W, W(UN), W(AU)]
LW153~281 kHz (1 kHz steps)
[for E, E(BS)1

Sensitivity:

Antennas:

SW2 7-22 MHz
[for W, W(UN), W(AU)l
SW1 2.3-7 MHz
[for W, W(UN), W(AU)I
FM 8 [1V (SIN 26 dB)
AM (MW) 1000 uV/m (SIN 20 dB)
LW 900 uV/m (SIN 20 dB)
[for E, E(BS)I
SW2 40 uV/m
[for W, W(UN), W(AU)I
SW1 300 uV/m
[for W, W(UN), W(AU)I
FM SW2:
Telescopic antenna (aerial)
AM (MW/LW/SW1)):
Ferrite core antenna

0 TAPE DECK SECTION

Tape:

Tape speed:
Recording system and
Bias frequency:

Track system:

Erasing system:
Frequency Response:

Signal to noise ratio:

Crosstalk:

Erase ratio:
Motor:

Wow and Flutter.

Compact cassette
4.75 cm/s

AC bias, 80 kHz

4 tracks stereo

AC erase

Normal 7042.000 Hz

CrOZ 7044,00!) Hz

Dolby NR ON 58 dB
OFF 50 dB

Between Track 60 dB

Between Channel 40 dB

65 dB

DC motor

025% (WRMS)

* Measured pursuant to the Federal Trade Commission's Trade
Regulation Rule on Power Claims for Amplifiers.

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

- Checking method

Operate switch is set to ON.

Next, 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)

\

-OO-

Insulation tester (DC 500V)