fm_towns:marty_maintenance
Differences
This shows you the differences between two versions of the page.
Next revision | Previous revision | ||
fm_towns:marty_maintenance [2021/06/23 10:46] – created Cyothevile | fm_towns:marty_maintenance [2021/06/23 11:13] (current) – Cyothevile | ||
---|---|---|---|
Line 4: | Line 4: | ||
The floppy drive is an EME-215FS. | The floppy drive is an EME-215FS. | ||
- | See photos below. | + | See photos below taken without permission from Caius. This is because the 26 pin drive has a rubber floppy belt that melts overtime. |
Line 13: | Line 13: | ||
The capacitors on the power supply are generally running below tolerance since it's 30 years old and it's recommended to replace them. | The capacitors on the power supply are generally running below tolerance since it's 30 years old and it's recommended to replace them. | ||
+ | |||
+ | Tamura Power Supply | ||
+ | |||
+ | | ^ MICROFARAD | ||
+ | ^ C5 | ||
+ | ^ C6 | 100UF| | ||
+ | ^ C7 | 4.7UF| | ||
+ | ^ C13 | 680UF| | ||
+ | ^ C14 | | ||
+ | ^ C15 | | ||
+ | ^ C16 | | ||
+ | ^ C17 | | ||
+ | ^ C18 | | ||
+ | ^ C19 | ||
Eastern Power Supply | Eastern Power Supply | ||
+ | | ^ MICROFARAD | ||
+ | ^ C5 | ||
+ | ^ C8 | 1UF| 50V| | ||
+ | ^ C21 | 470UF| | ||
+ | ^ C22 | 470UF| | ||
+ | ^ C23 | | ||
+ | ^ C24 | | ||
+ | ^ C25 | | ||
+ | ^ C26 | | ||
+ | ^ C27 | | ||
+ | ^ C28 | 120UF| | ||
+ | ^ C32 | 4.7UF| | ||
+ | \\ | ||
+ | \\ | ||
+ | \\ | ||
- | Tamura Power Supply | + | There is also a capacitor near the Yamaha YM3438. It should be rated at 470uf 16v. This specific capacitor is responsible for crackling audio that you may hear with a Marty straight from Japan with no work done on it. It should be labeled C22 on the Marty 1 motherboard but you can be certain by looking near the YM3438. |
+ | |||
+ | \\ \\ | ||
+ | |||
+ | There is also a battery meant to keep RTC or time. To my knowledge no crazy RNG generators rely on SRAM being OK or rely on RTC working for Marty but I've seen this in other computers. | ||
+ | |||
+ | \\ \\ | ||
+ | |||
+ | Finally the last hurdle is that Marty' | ||
+ | |||
+ | There is also a leafblade switch that tells the computer the lidtray is open or close. These are occasionally to blame for some dead Marty drives since the disc never spins. | ||
+ | \\ | ||
+ | If nothing else can be done then you will need an ODE from Deunan to revive your FM Towns Marty. | ||
+ | |||
+ | {{: |
fm_towns/marty_maintenance.1624409210.txt.gz · Last modified: 2021/06/23 10:46 by Cyothevile