Hitachi TRK 8800 EBS Service Manual

Page 1

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GENERAL SECTION
Semi-conductors:

Power (Mains) Supply:

Power (Mains)
Consumption:

Power output:

Speaker:

Dimensions:
Weight:

TUNER SECTION
Circuit System:

Tuning Range:

Sensitivity:

Intermediate
Frequency:

For Service Manuals Contaci
MAURITRON TECHNICAL SERVICES

No. 1389

8 Cherry Tree Rd, Chinnor
" W

Tel? 01844351694 Fax:- 01944-352554
Emait- Winfimmmwut

KEY TO ILLUSTRATIONS

i Dial light button 21 Tape counter
2 Power switch 22 Program indicator
3 Timer standby mode switch 23 Program switch
4 Function selector 24 Repeat switch
5 Meter switch (Tune/EartJLevel) 25 Auto rewind switch
6 AFC switch 26 Pause button
7 Fiecord level controls 27 Stop button
8 REC mute switch 28 Fast forward button
9 Record mode selector (Auto/ 29 Playback button
Manual) 30 Rewind button
10 Tape selector (Biasl switch 31 Record button
11 Mode switch 32 Eiect button
12 Tape selector (Equalizer) switch 33 Headphone socket
13 Dolby NR SWIM" 34 Dolby NR indicator
14 5355 mm 35 Built~in microphone (Left)
15 Treble 60""01 36 Level/tuning indicator
is LWdre Vim 37 Level/battery indicator
1 7 VOIUme mm 38 FM stereo indicator
8 Band 55'5" 39 Operation indicator (For E}
19 Tuning control AC power indicator [For erasil
20 Builtin microphone (Right)
SPECIFICATIONS
lC's: 13 . .
Transistors: 48 Antennas (Aerials): FM/SW: Telescooic antenna or
Diodes: 43 External antenna
LED: 23 MWILW: Ferrite-core antenna
Vafismm 2 TAPE RECORDER
AC: 220V, 50 Hz [For El Tape: Cassette taoe (030, 60, 90)
240v, so Hz [For E (can Tape 59: 4-75 Fm"
DC: 13.5v (IEC R20 x 9, Recording System: AC biasi, 57 kHz
Erasing System: AC erasing

Car: Use car battery adaptor

S cm, 4 ohms x 2

24W

SW/CH (Max.), 5W/CH (THD10%J
166m, 32 ohms x 2

556iW) x 318M) x 173(0) mm
8.0 kg (with batteries)

FM/SW/MW/ LW 4-band
suoerheterodyne

FM: 87.510 108 MHz

SW:5.0t518 MHZ

MW: 53010 i505 kHz

LW:150 to 350 kHz

FM:10 dB ipra), 2 :18 (max)

SW: 25 (16 (Oral, ZDdB (maxai

MW: 42 dB (pram 30 d8 (max.)

LW: 52 dB (praJ, 40 :18 (max)

FM: 10.7 MHz
SWIMW/LW: 468 kHz

Frequency Response:

SIN (Signal to Noise
Flatio):

Wow St Flutter:
Cross Talk:

Erase Ratio:
input sensitivity and
impedance:

Output Level and
impedance:

Fast Forward or

Rewinding Time:
Distortion:
Motor:

Normal : SD~1 2,000Hz
CrOz: 5044,000 H1
Metal: 50~15,000 Hz

50 dB (Dolby NR OFF)
50 as (Dolby NH ON!
0.06% (WRMS)

Between tracks: 50 d8
Between channels: 25 d5
65 dB

Microphone: 0.4 mV, 500 ohms
Phone: 3 mV, 50 kohms
Record/PlaybackmiN): 6 mV,12 kohms

Record/PlaybackiDlNi: 775 mV, 5 kohms
Ext speaker: 3.2 ohms

110 sec (Using C-GO)
1.5%
DC micrometer x 2

" Specifications and schematic diagram are subject to change for performance improvement without notice.

CASSETTE TAPE RECORDER WITH FM/SW/MW/LW RADIO

July

l980

Page 2

,ElBS)

2' SAFETY PRECAUTIQN

The following precautions should be observed when seIVICIng. ' ' g V 2

Since many parts in the unit have special safety-filmed characteristics, always use genuine Hitachi' 5 replacement - : C ,

parts Especially critical parts in the power circuit block should not be replaced with other makes.

Critical parts are marked with [kin the schematic diagram and cirwit board 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.

DISASSEMBLY

1. Head Cover 3. Rear Case
Push up the head cover in the direction of arrow.

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For Service Manuals Contact
MAURITRON TECHNlCAL SERVlCES (
8 Cherry Tree Rd Chinnor
Oxon OX9 4QY

Tel: 01M351894Fax: 0!
HEAD COVER Email enqutiastaUmmW-m

2. Cassette Lid 4. Main Chassis
Press the eject button to release the engagement of the Remove nine kNODS (Function, REC Volume, Bass,
mechanism and cassette lid. Then push the both arms of Treble, VDIUMEI Band! Tuning).
cassette lid in the direction of aerW- Press the eject button to release the engagement of the

mechanism and cassette lid. Then lift up the battery side (
of the main chassis.