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Electrical safety test at 3kV between mains leads and exterior metal points.
Electrical safety test verifying resistance of at least 4 Mohm.
List of all components comprising the CPC6128 keyboard assembly.
Methods to identify and resolve soft errors in disc drive operations.
Procedures for diagnosing and fixing disk write errors.
Steps to identify and resolve issues with the disc drive's head positioning.
Summary of required checks: radial, index, and azimuth alignment.
Identification of critical test points for oscilloscope measurements during alignment.
Steps to check and adjust the disc drive's read/write head positioning.
Procedure for fine-tuning the index timing signal in the disc drive.
Method to measure and verify the output signal strength of the disc drive head.
Calibration process to ensure accurate head positioning on tracks.
Steps to verify and correct the azimuth angle of the disc drive head.
Inventory of external parts for the GT65 monitor housing.
Step-by-step instructions for performing alignment on the GT65 monitor.
Inventory of external parts for the CTM644 monitor housing.
Instructions for adjusting various controls on the CTM644 monitor.
Guide for replacing mechanical components in the disc drive.
Details on LSI chips, display, keyboard, and peripherals for the CPC6128.
Information on unit dimensions, weight, and power supply requirements.
Specifications for disc drive, AMSDOS, CP/M Plus, and disc formats.
Contact information for Amstrad Consumer Electronics plc.
General| Manufacturer | Amstrad |
|---|---|
| Model | CTM644 |
| Type | Desktop |
| Display Type | CRT |
| Screen Size | 14 inches |
| Refresh Rate | 50 Hz |
| Input | Keyboard |
| Processor | Zilog Z80 |
| Processor Speed | 4 MHz |
| ROM | 32 KB |
| Display | Color |
| Keyboard | Integrated |
| Power Supply | Built-in |
| Resolution | 640 x 200 pixels |
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