Sharp GF-9090H User Manual

GF-9090H.HB GF-9090E
Manual
@ APSS
Auto Program Search System
MODEL
GF-9O09OH sinver Panes
GF-9O90B#B eeiack Pane!
GF-9090E
In the interests of user-safety the set should
be restored to its original condition and only
parts identical to those specified be used.
SPECIFICATIONS
GENERAL
Type:
Power source:
Power consumption:
Speaker:
Power output:
Semiconductors:
Dimensions:
Weight:
Input terminals:
Output terminals:
Portable stereophonic cassette tape re-
corder with built-in LW/MW/SW/FM
4-band radio
AC 110/220/240V, 50/60 Hz(H, HB)
AC 240V, 50/60 Hz (E)
DC 12V (Eight UM/SUM-1 batteries
or External DC supply)
24 watts
16cm (Woofer) x 2, Horn type (Twee-
ter) x 2
MPO 8000 mW (DIN 45 324) (H, HB)
MPO 11W (E): AC operation
RMS power 7000 mW
(3500 mW + 3500 mW: DC operation)
5-IC (Integrated Circuit), 47-transistor
and 37-diode (4 Light Emitting Diode)
485mm(W) x 115mm(D) x 240mm(H)
5.8 kg (without batteries)
EXT. MIC. 600 ohms (J201, J202)
Remote control (J302)
EXT. DC power, 12V (J701)
AC input power (SO701)
REC/PB DIN socket, 2.5 mV/10K
ohms (SO202)
FM EXT. Antenna (SO1)
EXT. speaker, 4 ~ 8-ohms (SO301,
$0302)
PHONES : 4 ~~ 8 ohms (J301)
REC/PB DIN - socket, 1V/50K
ohms (SO202)
=O MAPWNH
WN
TAPE RECORDER SECTION
Type:
Tape:
Tape speed:
Recording system:
Erasing system:
Recording time:
Fast forward or
rewind time:
Frequency response:
Wow and flutter:
S/N ratio:
RADIO SECTION
Frequency range:
Intermediate
frequency:
Circuit system:
Antenna:
4-track stereo cassette tape recorder
Philips type compact cassette tape
4.8 cm/sec.
AC bias
DC erasing
60 minutes (with C-60 tape)
120 sec. (with C-60 tape)
40 ~ 15,000 Hz (CrO2 tape)
40 ~ 12,000 Hz (Normal tape)
0.3% (DIN 45 511) (H, HB)
0.15% (WRMS) (E)
dB 50
LW 150 ~ 285 kHz
MW 520 ~ 1,620 kHz
SW 5.95 ~ 18 MHz
FM 87.6 ~ 108 MHz
LW/MW/SW 455 kHz
FM 10.7 MHz
4-band superheterodyne system
LW/MW ferrite core bar antenna
SW/FM telescopic antenna
FM EXT. antenna
SHARP CORPORATION OSAKA, JAPAN

Sharp GF-9090H Specifications

General

Country	Japan
Manufacturer	Sharp
Model	GF-9090H
Power Output	20W (10W per channel)
Power Source	AC 50/60Hz
Tuner	FM/AM
Wow and Flutter	0.15% WRMS
Inputs	Microphone, Line In
Outputs	Headphone, Line Out

Summary

DISASSEMBLY

FRONT CABINET REMOVAL

Procedure for removing the front cabinet assembly.

OPERATION PANEL REMOVAL

Procedure for removing the front operation panel.

DIAL SCALE PLATE REMOVAL

Procedure for removing the dial scale plate.

MECHANISM BLOCK REMOVAL

Procedure for removing the tape mechanism block.

CHASSIS (P.W.B.) REMOVAL

Procedure for removing the main circuit board (P.W.B.).

APSS FUNCTIONALITY

APSS INDICATOR CIRCUIT

Explanation of the APSS indicator circuit's operation and timing.

MUTING CIRCUIT

Explanation of the muting circuit's function.

APSS DETECTION CIRCUIT

Detailed explanation of the APSS detection circuit.

MECHANICAL ADJUSTMENT

PLAY ADJUSTMENT OF FLYWHEEL SHAFT THRUST

Procedure for adjusting flywheel shaft thrust play.

PINCH ROLLER PRESSURE ADJUSTMENT

Procedure for adjusting pinch roller pressure.

FWD-APSS AND REV-APSS MECHANISMS CHECK

Verifying the operation of FWD-APSS and REV-APSS mechanisms.

TORQUE MEASUREMENT AT PLAY, FF AND REWIND MODES

ADJUSTMENT OF PLUNGER SETTING POSITION

GAP ADJUSTMENT BETWEEN MOTOR SWITCH AND BRAKE LEVER

OPERATION CHECK OF PAUSE MECHANISM

ELECTRICAL MEASUREMENT

RECORD BIAS CURRENT AND FREQUENCY ADJUSTMENT

Adjusting record bias current and frequency.

ERASE CURRENT CHECK

Procedure for checking erase current.

RECORD AMPLIFIER SENSITIVITY CHECK

Procedure for checking record amplifier sensitivity.

PLAYBACK AMPLIFIER SENSITIVITY CHECK

Procedure for checking playback amplifier sensitivity.

SWING ADJUSTMENT OF VU METER

RECORD/PLAYBACK HEAD AZIMUTH ADJUSTMENT

ALIGNMENT PROCEDURES

GENERAL ALIGNMENT INSTRUCTION

General guidelines for receiver alignment.

AM ALIGNMENT CHART

Chart detailing AM alignment steps and parameters.

FM ALIGNMENT CHART

Chart detailing FM alignment steps and parameters.

FM MPX ALIGNMENT CHART

Chart detailing FM multiplex alignment steps.