Dicas Reparação




Modelo - Chassis TAM30


Pesquisa: TAM30 Enviar Dica Resolvida
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SonyTAM30
SERVICE MANUAL HAS BEEN REVISED The service manual has been revised. However, the new manualhas not been released as yet. -HQ COMMENTS: Tokyo will soon issue the revised manual. Until revisedU.S. model is issued, use Canadian service manual P/N 9-955-536-21.The following changes wer
SonyTAM30
PART NUMBER CORRECTION: KEYBOARD SWITCHES The part number for keyboard switches: SW1 to SW8, and SW15 isincorrectly listed in the service manualas 1-554-937-11.
SonyTAM30
WILL NOT ANSWER INCOMING CALLS
SonyTAM30
WILL NOT ANSWER INCOMING CALLS Customer complains of unit not answering incoming calls. Unitworks fine in shop. Most of these that we have seen are when the customerlives in a smaller community or rural area. These answering machines seemto have a problem detecting the ring on some
SonyTAM30
UNIT LOCKS UP When applying power to the unit without a tape in the deck,unit does a quick reset and gives an error detection signal. This was anindication that the micro was trying to perform a mechanical function.Scan pulses were found on IC-3 pin 58 telling the mi
SonyTAM30
INTERMITTENT LINE CONNECT With the line cord plugged in, unit will grab the line in 60seconds (with audible dial tone) and then release the line in 60 seconds.This is a continuous cycle. This is caused by C-1 leaking which activatesPH-1 and grounds pin 4. This in turn holds IC-
SonyTAM30
ACTS LIKE NO POWER AFTER KEY IS PRESSED With line cord and power cord plugged in, the unit acts likethere is no power while performing OGM function. With line cord removed,OGM function can be performed. The cause was C-1 being leaky, which turn-ed on PH-1 and lowered pin 4 to ground holding
SonyTAM30
IN ANSWER MODE TAPE FF TO THE END OF TAPE AND STOPS Q-205 base to collector is open. With Q-205 defective, thereel pulses from PH-2 are not getting to IC-3, therefore, the reels do notstop until the end of the tape.
SonyTAM30
ICM CUTS OFF DURING CONVERSATION. Capacitor opens reducing audio to IC-1 which will not be astrong enough signal to operate the VOX circuit. Micro will cut unit offin 7 seconds during incoming message.
SonyTAM30
INTERMITTENT NO AUDIO Intermittently, audio is very low on playback ICM.
SonyTAM30
CONTINUOUS LINE CONNECT With or without power applied, the TAMs will have continuousconnection with the outside line. This is due to the line switch (Q-1)shorted collector to emitter. Also applies to serial numbers 60743,24519, 21397, 37987 and 35030.
SonyTAM30
INCORRECT PART NUMBER IN SERVICE MANUAL SP-1 When ordering part number for SP-1 in service manual, wrongpart is received. The part needed is an 8 Ohms speaker. The part re-ceived is an 16 Ohms speaker. It would be helpful if a more accuratedescription of the speaker was given i.e. AC resistance
SonyTAM30
UNIT CUTS OFF DURING OGM PLAYBACK TO THE CALLER When incoming call is received, OGM is activated, but is pre-maturely cut off. This is due to the fact that pin 52 of IC-3 has to beheld low while the OGM is played to the incoming caller. In order forthis to be accomplished, Q-4 must be turned on by Q
SonyTAM30
BEEP TONES DURING MEMO OR CONVERSATION RECORD Constant or pulsing beep tones during Memo Record andConversation Record. Also applies to serial numbers 12121, 15230 and27297.
SonyTAM30
WRONG PART NUMBER IN SERVICE MANUAL Part number (page 21, reference No. PH-2) 8-719-710-34 isincorrect.


Assistência TécnicaAs dicas apresentadas destinam-se a técnicos de eletrónica, a tentativa de reparação ou assistência sem ter conhecimentos de eletricidade e eletrónica, podem provocar danos mais graves aos equipamentos e, devido a tensões muito elevadas em alguns circuitos, graves danos fisicos que podem constituir um risco em determinadas reparações.

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