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I am very pleased with the service manual for my RT-909. This was an easy purchase and great procuct, and much cheaper than other venues i had looked at. This web site is now listed in my favorites list. KEEP UP THE GOOD WORK. THANKS. J. BROWN
A very well written and easy to understand manual.
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I found this service manual to be complete in every detail except for troubleshooting charts. It would be helpful if it had a set of troubleshooting charts; however it is a very good manual otherwise and for the price it is very well worth it.
Complete manual included schematics layouts and alignment procedure, clear to read and magnify, extremely pleased with manual and owner manual . com's service
1. IC10 (TDA7513) -The Tuner adjustment method
â¢ When IC10 and its circumference are fixed, according to the following order, it readjusts if needed. â¢ The adjustment item changes with parts to exchange. Please refer to "Parts vs Adjustment item table". 1-1. VCO Coil Adjustment -- Adjustment of Tunning Voltage Voltage Check Point : Vt-Check Land (PWB Side_B, around D506) Adjustment Coil : L507 (VCO Coil) The adjustment method : VCO coil is turned and adjusted according to the following tables.
TYPE E/M K J W(Wide Band) Mode AM AM FM FM freq. 1611kHz 1700kHz 90.0MHz 108.0MHz Voltage 5.5 Â± 0.1(V) 5.8 Â± 0.1(V) 5.6 Â± 0.1(V) 7.2 Â± 0.1(V) Fig (C) (C) (C) (C)
1-3. Adjustment of FM_ANT&RF Coil Voltage Check Point : S_METER-Check Land (PWB Side_B, around W572) Adjustment Coil : ANT_Coil = L505 RF_Coil = L506 Setting of Signal Generator : Refer to the following tables.
TYPE E/M K J W(Wide Band) MODE FM FM FM FM freq. 87.5MHz 87.9MHz 76.0MHz 65.0MHz Mod. OFF OFF OFF OFF ANT Input 5 or 11dBuEMF 5 or 11dBuEMF 5 or 11dBuEMF 5 or 11dBuEMF Fig (A),(C) (A),(C) (A),(C) (A),(C)
xThe appearance and the coil with which S-METER DC voltage serves as the maximum are turned and adjusted in the above-mentioned SG input. âBy the above-mentioned adjustment method, same adjustment is performed to both sides (ANT&RF Coil). 1-4. Adjustment of STEREO (adjustment of 456k-VCO) Adjust in TEST_MODE â¢ How to enter the test mode While pressing on [ FM ] and [ PRESET 6 ] keys, reset the unit. â¢ Adjustment method Complete on condition that show "ALL OFF" when pressing on [ PRESET 1 ] and [ PRESET 6 ] keys. (Writing adjustment valve to the EEPROM.) Effect of adjustment is in cofirmation of adjustment status at [ PRESET 4 ] key. â¢ Display of [ PRESET 4 ] Adjustment "OK" : 14seg model "E2P OK" 7seg model "EPO" Adjustment "NG" : 14seg model "E2P ERR" 7seg model "EPE" â¢ Releasing the test mode Reset mode only. ACC off, Power off, Power down and Remove the panel mode is not releasing.
M : AM Adjustment For Your Information : The frequency of SET is only set up by Pre-Set-Key in case this adjustment 1-2. Adjustment of 1st & 2nd-MIX Coil Voltage Check Point : S_METER-Check Land (PWB Side_B, around W572) Adjustment Coil : 1stIFT = L508 / 2ndIFT = L509 Setting of Signal Generator : Refer to the following tables
TYPE K E,M,J,W MODE AM AM freq. 1000kHz 999kHz Mod. OFF OFF ANT Input 35dBuEMF 35dBuEMF Fig (B),(C) (B),(C)
xThe appearance and the coil with which S-METER DC voltage serves as the maximum are turned and adjusted in the above-mentioned SG input. âBy the above-mentioned adjustment method, same adjustment is performed to both sides (1st&2nd MIX Coil).
L505 L506 L507 L508
(C) DC Voltmeter Vt Check Land IC10
S-METER Check Land (OVER VIEW) (UNDER VIEW)