Service manuals, schematics, eproms for electrical technicians
REALISTIC TRC470
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(ZIP)
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1.5 MB
1.5 MB
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Category
OTHER
SERVICE MANUAL
OTHER
SERVICE MANUAL
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Good luck to the repair!
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Looking for similar realistic manual?
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REALISTIC TRC-470 TRC470 TRC 470
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Sziasztok!
A hozzáértők segítségét kérném:
A fenti cirkó már egy ideje azt produkálja, hogy elinduláskor 3-4-5-ször begyújt, majd elalszik a láng. Aztán egyszercsak elindul, és megy rendesen.A vákumkapcsoló, hőérzékelők, keringetők, nyomás kapcsoló (víz) rendben. A gáz részéhez nem merek nyúlni, bár az a gyanum, hogy ott lehet valami dugulás.
Tudna valaki segíteni?
Köszönettel:
Attila
A hozzáértők segítségét kérném:
A fenti cirkó már egy ideje azt produkálja, hogy elinduláskor 3-4-5-ször begyújt, majd elalszik a láng. Aztán egyszercsak elindul, és megy rendesen.A vákumkapcsoló, hőérzékelők, keringetők, nyomás kapcsoló (víz) rendben. A gáz részéhez nem merek nyúlni, bár az a gyanum, hogy ott lehet valami dugulás.
Tudna valaki segíteni?
Köszönettel:
Attila
sziasztk mindenkinek.
Keresek usb driwert egy myguide 3500 driver cd-t, vagy az usb telepitéséhez szükséges fájt.
A neten már kerestem, de valahogy nem találom.
vái szép napot mindenkinek
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.
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