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There are currently no product reviews.
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Great to have extra resources for Service Manuals, Now days you can really not trouble shoot efficiently without one , Wayne at IRIONS TV & ELECTRONICS REPAIR Clearwater , Fl. 33755 727-446-7955
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For five bucks you can barely buy a hamburger. Or for the same five bucks you can buy a service manual. Much more useful. (and better for your health, depending on where you buy your hamburgers).
Yes, there are free manual sites out there, but if they don't have what you want, you have to pay.
And five bucks isn't much. Not for full specs, schematics and adjustment and parts replacement procedures.
My only criticism is that grayscale illustrations aren't well rendered, but I've seen worse.
Schematics and text are clear.
I'll be happy to purchase from here again.
Mike
[email protected]
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Impressively thorough. Even the simple operators manual helped me "fix" one of the 2 CD players in the unit. This unit reads CD's from the top so they should be installed in the magazines "upside down" from typical CD players. The CD player service manual helped me unjam a stuck carriage because somebody transported the box laying down loaded with CD's. A little lens cleaning & the player now works well! Thanks for you help at a great price! Joe
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I was skeptical at first but later found the manual to be good quality for the price. It took a couple hours to receive the email with the download link, well worth the wait. Thanks.
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very helpful, I could not have cleaned motherboard and replaced the main fan without it
SRS-RF90R/RF90RK/TMR-RF90
SRS-RF90R
Notes: 1. Use transmitter with check and adjustment already completed. 2. On adjusting the speaker section, use the transmitter as a jig. Wireless Active Speaker : SRS-RF90R Transmitter : TMR-RF90 Procedure: 1. Connect an oscillator with attenuator and terminator (600 �) to the transmitter AUDIO IN-A connector (J402). 2. 3. 4. 5. Connect an AC adapter to the transmitter DC IN 9V jack (J404). Short between Q101 corrector and GND on the RX board. Connect an AC adapter to the speaker DC IN 9V jack (J801). Connect lead wires to IC101 pin 4, pin 6, pin 7 and GND on 13. Switch on the transmitter again. 14. Set the transmitter CHANNEL switch to 1. 15. Push the TUNE switch (S301) to receive radio frequency. 16. Check same step 8. 17. Set the transmitter CHANNEL switch to 3. 18. Push the TUNE switch (S301) to receive radio frequency. 19. Check same step 8. Setting :
regulated power supply (DC 1.2V) (from step 6 to step 9) oscilloscope (step 8, step 16, step 19)
CH2 ++ ��
+ �
TP102
IC101 pin6
CH1
IC101 pin4
the RX board. 6. Connect a resistor 33k � between IC101 pin 4 and pin 7. 7. Connect lead wires to the speakers� terminals (L+,L-,R+,R-) on the AMP board. Free Run Frequency Check and Adjustment 1. Set the transmitter AUDIO IN-A connector (J402) to no signal. Note: In this case, operation time is about 5 or 10 minutes. Perform confirmation for less than 5 minutes. 2. Check the transmitter power indicator D401 (red) lights. 3. Set the transmitter CHANNEL switch to 1. 4. Connect DC 1.2V across TP102 and GND on the RX board. 5. Connect a frequency counter to IC101 pin 4 and GND on the RX board, then confirm the frequency within 76kHz ± 50Hz 6. When the frequency dose not satisfy the specified value, adjust the value of the frequency counter to specification by RV101 on the RX board. Specified values: 76kHz ± 50Hz. 7. Remove a 33 k� resister between IC101 pin 4 and pin 7. Setting :
regulated power supply (DC 1.2V) frequency counter
Carrier Modulation Check 1. Set the transmitter CHANNEL switch to 2. 2. Set the transmitter NOISE FILTER switch to off. 3. Input a signal of 1kHz, 316mVrms to transmitter AUDIO IN-A (L-ch) connector only. 4. Set the speaker volume (RV301) to minimum. 5. Connect an oscilloscope CH1 and CH2 to IC101 pin 6 and pin 4. 6. Push the TUNE switch (S301) to receive radio frequency. 7. Check the waveform of the oscilloscope that the CH1 is demodulated 1kHz signal and CH2 is GND. 8. Connect an AC voltmeter with LPF to IC101 pin 6 and GND. 9. Check the value of the AC voltmeter to 26mVrms ± 2mV Setting :
digital voltmeter (AC range) LPF
+ �
2.2K 33000P
oscilloscope
IC101 pin6
IC101 pin6
CH1
++ ��
CH2
IC101 pin4
+ �
TP102
+ �
IC101 pin4
Separation Check 1. Set the transmitter CHANNEL switch to 2. 2. Set the transmitter NOISE FILTER switch to off. 3. Input a signal of 1kHz, 316mVrms to transmitter AUDIO IN-A (L-ch) connector only. 4. Connect an oscilloscope CH1 to speakers terminal (L+,L-) and CH2 to IC101 pin 4 and GND. 5. Push the TUNE switch (S301) to receive radio frequency. 6. Check the waveform of the oscilloscope that the CH1 is demodulated 1kHz signal and CH2 is GND. 7. Connect an AC voltmeter with LPF to speakers terminal (L+,L-). 8. Adjust the value of the AC voltmeter to specification by speaker volume RV301. Specified values: 155mVrms 9. Connect an AC voltmeter with LPF to speakers terminal (R+,R-). 10. Measure the value of the AC voltmeter. 11. Check the difference of the L and R to more than 20dB. 12. Input a signal of 1kHz, 316mVrms to transmitter AUDIO IN-A (R-ch) connector only. 13. Connect an AC voltmeter with LPF to speakers terminal (R+,R-). 14. Adjust the value of the AC voltmeter to specification by speaker volume RV301. Specified values: 155mVrms 15. Connect an AC voltmeter with LPF to speakers terminal (L+,L-). 16. Measure the value of the AC voltmeter.
Receiving Frequency Check and Adjustment 1. Set the transmitter CHANNEL switch to 2. 2. Set the transmitter NOISE FILTER switch to off. 3. Input a signal of 1kHz, 316mVrms to transmitter AUDIO INA(L-ch) connector only. 4. Keep distance between transmitter and speaker to 5 meters over. 5. Set the speaker volume (RV301) to minimum. 6. Connect DC1.2V across TP102 and GND. 7. Connect an oscilloscope CH1 and CH2 to IC101 pin 6 and pin 4. 8. Check the waveform of the oscilloscope to CH1 is demodulated 1kHz signal and CH2 is GND. 9. If CH1 and CH2 are not satisfied in step 8, adjust the coil (L101) on the RX board to satisfied step 8. 10. Disconnect DC1.2V across TP102 and GND. 11. Open between Q101 corrector and GND on the RX board. 12. Switch the transmitter off and push the TUNE switch (S301). Check the waveform of the oscilloscope at the TP102 as follows: Setting :
oscilloscope
Waveform of auto-tuning 1.8V voltage at the TP102 2-3sec GND 0.6V
CH1
TP102
+ �
10
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