Service manuals, schematics, eproms for electrical technicians
RICOH RTC PACK DESIGN GUIDE COMPENSATION SIMULATOR SOURCE
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If you get stuck in repairing a defective appliance download this repair information for help. See below.
Good luck to the repair!
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Looking for similar ricoh manual?
Good luck to the repair!
Please do not offer the downloaded file for sell only use it for personal usage!
Looking for similar ricoh manual?
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RICOH RTC PACK DESIGN GUIDE SIMULATOR SOURCE
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Relevant OTHER forum topics:
Üdv!
Van a családban működő FÉG cirkó, amit nem szeretnénk új típusúra cserélni. Inkább vettem hozzá tartalékba /használt C21/ egy másik olyan cirkót, és egy C24-et is, amiben jó szinte minden, nemrégen működött, és van még egy 4 éve nem használt C12-es is. Kiszereltem a keringető szivattyúkat, és ezt hogyan érdemes tárolni? A másikban már szinte alig lehetett megmozdítani a szivattyút, de utána már forog. Rozsda szerű anyag jött is ki belőle a vízbe. Gondolom, néhány éve állt, és hozzá sem nyúltak. Tudom, hogy ezeket a víz keni, de ilyenkor szárazak. Tölthetek bele valamit, olajat esetleg, hogy állásában ne szoruljon be, de később megint használni lehessen?
Köszi.
Üdv: formasu
There is no service manual of the Yamaha KX-250, anyone? I have fixed the mechanism of this unit, replaced the capstan motor (bad quality shreeking one with a better one), replaced the belts and works perfectly fine. Perfect audio, everything works great. However after testing it many times I reassembled the unit and did another test. Some tick noise is present in the audio.
The tick noise is present when executing a function, for example REW (most worse of all), FF or PLAY (only a few spikes randomly), also when using the remote. It is not a problem of the mechanism (motor) or a ground issue or something like that, disconnected it and problem still exists. Maybe it has something to do with static electricity because I have used the unit without HEAD cables attached to the mainboard (head input pins floating) however the pre-amplification circuit is working fine except of the noise. There are two IC's in this circuit, UPC1330HA head selector and a LA3161 pre-amplifier.
The LA3161 is a 2-channel preamplifier that has a circuit to reject ripple. Is it possible this IC is damaged (because of a (static) spike) and because of that the ripple rejection is no longer working? When I replace this IC the problem is solved?
Any ideas or do have some people any experience with this or recognize the sound behaviour discription? Anyone who can point me into the right direction?
Many thanks for any reply.
The tick noise is present when executing a function, for example REW (most worse of all), FF or PLAY (only a few spikes randomly), also when using the remote. It is not a problem of the mechanism (motor) or a ground issue or something like that, disconnected it and problem still exists. Maybe it has something to do with static electricity because I have used the unit without HEAD cables attached to the mainboard (head input pins floating) however the pre-amplification circuit is working fine except of the noise. There are two IC's in this circuit, UPC1330HA head selector and a LA3161 pre-amplifier.
The LA3161 is a 2-channel preamplifier that has a circuit to reject ripple. Is it possible this IC is damaged (because of a (static) spike) and because of that the ripple rejection is no longer working? When I replace this IC the problem is solved?
Any ideas or do have some people any experience with this or recognize the sound behaviour discription? Anyone who can point me into the right direction?
Many thanks for any reply.
Sziasztok
Szeretnék segítséget kérni a fenti kazánnal kapcsolatban.
A hibajelenség : rendszertelenül megáll , ilyenkor 3 rövidet egy hosszabbat villog a LED.
A füstgázérzékelő NTC cserélve lett. A kémény ellenőrizve, tisztítva. A panel A-Z-ig átforrasztva.
Esetleg valaki találkozott ilyen hibával és segítene ?
Köszi
Üdv
Szabi
Szeretnék segítséget kérni a fenti kazánnal kapcsolatban.
A hibajelenség : rendszertelenül megáll , ilyenkor 3 rövidet egy hosszabbat villog a LED.
A füstgázérzékelő NTC cserélve lett. A kémény ellenőrizve, tisztítva. A panel A-Z-ig átforrasztva.
Esetleg valaki találkozott ilyen hibával és segítene ?
Köszi
Üdv
Szabi
Üdv Mindenkinek!! Frekvencia osztót szeretnék késziteni . Javasolták az MB 506 -os Ic-t. De kapcsolási rajzra lenne szükségem . Ha van valakinek,kérem segitsen hol lehet megtekinteni. Rádiotechnika összes példánya megvan ,de mire fellapozom nagyapa leszek. Ha más egyszerübb megoldás van az is érdekel. 10 -es osztóra van szükségem 1.5Ghz -re,a DFM127 -es müszer elé. Várom a segitségeteket.