
Do you have a question about the Sharp GF-8989H and is the answer not in the manual?
| Number of Heads | 2 |
|---|---|
| Signal-to-Noise Ratio | 50 dB |
| Tape Speed | 4.75 cm/s |
| Frequency Response | 40Hz - 12kHz (Normal Tape) |
| Wow and Flutter | 0.15 % (WRMS) |
| Speakers | 2 x 16 cm, 2 x 5 cm |
| Frequency Response (Metal Tape) | 40 Hz - 15, 000 Hz |
Important safety guidelines for operating and servicing the equipment.
Detailed technical data including power, speakers, dimensions, and frequency response.
Identification and description of all front and rear panel controls and parts.
Guide to setting the correct voltage input for safe operation.
Step-by-step instructions for removing the main front casing.
Procedure for detaching the tape mechanism unit from the chassis.
Steps to remove the main circuit board assembly.
Detailed explanation of the Auto Program Search System functionality.
Detailed explanation of the Automatic Level Control functionality.
Procedure to verify and adjust pinch roller pressure.
Verifying torque in playback, fast forward, and rewind modes.
Checking the gap in the pinch roller lever mechanism.
Steps to adjust the tape playback speed.
Procedure to adjust the record/playback head azimuth for optimal performance.
Adjusting the record amplifier bias oscillator for correct recording.
Procedure to check and adjust the erase head current.
Adjusting playback sensitivity for optimal tape reproduction.
Adjusting record and playback sensitivity levels for optimal signal levels.
Calibrating the level meter display for accurate visual indication.
General guidelines and precautions for performing alignment tasks.
Detailed steps for aligning Intermediate Frequency and Radio Frequency circuits.
Specific parameters and connections for AM band alignment.
Table summarizing AM IF/RF alignment procedures and settings.
Detailed steps for aligning FM Intermediate Frequency and Radio Frequency circuits.
Specific parameters and connections for FM band alignment.
Steps to align the FM stereo reception circuitry.
Identification of adjustment points on the printed circuit board.
Explanations of symbols, component markings, and measurement notes.
Explanations for component types, values, and measurement conditions.
Procedure for replacing the power integrated circuit.
Instructions for correctly threading the dial cord.
Diagram showing wiring connections on the main PWB.
Detailed wiring diagram for the audio processing section.
Diagram showing wiring connections for the tuner section.
High-level overview of the unit's functional blocks and signal flow.
Detailed circuit diagram for the tuner section of the receiver.
Diagram illustrating the assembly of the unit's outer casing.
Diagrams and equivalent circuits for key integrated circuits.
Identification and diagrams for transistors and LEDs used in the unit.
Instructions for packing the unit for shipment.
List of replacement transistors, diodes, and integrated circuits.
Replacement parts list for controls, coils, transformers, and filters.
Replacement parts list for capacitors and resistors.
Detailed list of replacement resistors.
Replacement parts for mechanical components and miscellaneous items.
List of miscellaneous parts including knobs, switches, and connectors.
Additional miscellaneous parts like handles, covers, and cables.
Replacement parts list for AC supply leads and connectors.
Additional AC supply leads and related labels.
Table detailing specific part number variations between models.
Differences in labels, manuals, and cartons between models.
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