Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
---|---|---|---|---|---|
Sony | SPP300 | UNIT IN 20 T PULSE ONLY - RESOLDER S502 IN BASE | Unit will not switch to 10t or tone dial modes, switch good. | ||
Sony | SPP300 | NO DIAL TONE - REPLACE IC-508, P/N 8-759-921-08. | No dial tone from corded handset or cordless. Found voltageat IC501/pin 12 to change from 4.4 volts to 1.8 volts as the hook switchis pressed. IC508/pin 6 would not change. IC508 (3/4) would notrecognize 1.8 volts as being a low. | ||
Sony | SPP300 | NO AUDIO TO/FROM CORDLESS HANDSET- INTERCOM OK - (IC-507) | The unit's handset would not receive or transmit audio to orfrom the outside line. The intercom function worked normally meaning theproblem must be in the base unit. I found pins 11, 12 and 13 of IC507 atvarying voltages causing the output pin 10 to st | ||
Sony | SPP300 | HANDSET DOES NOT COMMUNICATE WITH BASE | Cordless handset had low B+ to PLL. Only 1.2 volts on Q-210collector. | ||
Sony | SPP300 | NO DIAL TONE - Q610, Q611 | Unit will not work. | ||
Sony | SPP300 | IMPEDANCE OF SONY TELEPHONE PRODUCTS | What is the impedance of our phone products? -HQ COMMENTS: All Sony phones fall in the range of 50 to 300 Ohms whenthe phone is off-hook and when DC-loop current is in the range of 15 -120 ma. | ||
Sony | SPP300 | CUSTOMER OPERATION MANUAL | On page 7 of instruction manual they show the AC-T40connected to the base unit. I believe the AC-T90 is the adaptor usedfor the base station. | ||
Sony | SPP300 | PART NUMBER CORRECTION | Part number in service manual = 8-729-201-79. Part numbershould be 8-729-201-78. -HQ COMMENTS: Thank you for your information. We will publish a servicebulletin. 5/88: TEL S/B # 005 was published this month. |