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Nice to have the service manual for the Sony DCR-TRV345E now. The document is of excellent quality.
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MACKIE HR824 26 pages English-only Service Manual contains:
1) HR824 technical overview with the description of front and rear panel switches.
2) HR824 specs
3) Block Diagram
4) Wiring Diagram
5) Packaging management
6) Spare part & final assembly list (for PCB rev A and B) + exploded view
7) Test Procedures (where, how to measure voltage...) including Test Point diagram on the PCB.
8) IC and Transistor charts.
Excellent guide: very clear, good scan quality enabling us to print readable diagram :-)
Note:
Mackie HR824 make extensive use of surface mount devices (SMD). Service on the HR824 must
only be undertaken by experienced service technicians with the right tools, experience and patience to perform surface mount rework when needed.
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This Service manual is very well scanned and its clean to read, no any anti-theft words that un-english could understand. I got my CCD600 working with this manual and it´s clear shematics :)
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I was very pleased with the service provided and was surprised at how good the quality was of the manual. I thought it may be a third generation copy or so, but it is as good as the websites that charge 3 times this much. I repair some electronics for family and friends without charge, so this is perfect for me. Thank you very much.
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The service was great and the document was also great. Highly recommend!!!!
If anyone has a users manual... Please email me. need one. $ [email protected]
< TUNER SECTION >(HR,HT)
1. Clock Frequency Check Settings : � Test point : TP2 (CLK) Method : Set to AM 1602kHz and check that the test point is 2052kHz ± 45Hz. 2. AM VT Check Settings : � Test point : TP1(VT) Method : Set to AM 1602kHz and check that the test point is less than 8.0V. Then set to AM 531kHz and check that the test point is more than 0.6V. 3. AM Tracking Adjustment Settings : � Test point : TP6(Lch), TP7(Rch) � Adjustment location : L981(1/3) ........................................ 999kHz Method : Adjust L981 (1/3) so that the output becomes maximum.
< DECK SECTION >
1. Tape Speed Adjustment Settings : � Test tape : TTA�100 � Test point : SP�OUT 2V � Adjustment location : SFR1 Method : Play back the test tape and adjust SFR1 for 3000Hz ± 5Hz (FWD) and FWD PLAY speed ± 45Hz (REV).
2. Head Azimuth Adjustment Settings : � Test tape :
TTA�300
Method :
� Test point : SP�OUT 2V � Adjustment location : Head azimuth adjustment screw Play back the 8kHz signal of the test tape and adjust screw so that the output becomes maximum. Next, perform on each FWD PLAY and REV PLAY mode.
4. FM VT Check Settings : � Test point : TP1 (VT) Method : Set to FM 108.0MHz and check that the test point is less than 8.0V. Set to FM 87.5MHz and check that the test point is more than 0.5V. 5. FM Tracking Check Settings : � Test point : TP6(Lch), TP7(Rch) Method : Set to FM 98.0MHz and check that the test point is less than 9.0dBµV. 6. AM IF Adjustment Settings : � Test point : TP6(Lch), TP7(Rch) � Adjustment location : L772 ................................................ 450kHz Method : Adjust L772 so that the output becomes maximum. 7. DC Balance / Mono Distortion Adjustment Settings : � Test point : TP3, TP4 (DC Balance) TP6(Lch), TP7(Rch) (Distortion) � Adjustment location : L771 � Input level : 60dBµV Method : Set to FM 98.0MHz and adjust L771 so that the voltage between TP3 and TP4 becomes 0V ± 0.04V. Next, check that the distortion is less than 1.3%
3. PB Frequency Response Check Settings : � Test tape : TTA�320 � Test point : SP�OUT 2V Method : Play back the 315Hz and 10kHz signals of the test tape and check that the 10kHz signal with respect to that of the 315Hz signal is 0dB ± 3dB. 4. REC/PB Frequency Response Check Settings : � Test tape : TTA�602 � Test point : SP�OUT 2V Method : Input a �20VU signal to the AUX terminal. Record the 1kHz and 10kHz signals on the test tape and play back them. Check that the difference between the record level and the play back level at 1kHz and 10kHz signal is 0dB to ± 3dB.
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