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Exactly what was needed to assess the product - excellent value and great service
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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.
The following is a simple adjustment method. � Simple Adjustment � Note: Since exact adjustment cannot be performed, remember the positions of the controls before performing the adjustment. If the positions after the primary adjustment are only a little different, return the controls to the original position.
8. Connect the oscilloscope to TP (TRACKING-Y) and TP (VC) on the CD board. 9. Adjust RV704 so that the waveform is as shown in the figure below. (tracking gain adjustment)
VOLT/DIV: 1 V TIME/DIV:2 ms 0V
oscillosope (DC range) CD board TP (FOCUS-Y) TP (TRACKING-Y) TP (VC)
+ �
� Incorrect Examples (fundamental wave appears)
low tracking gain VOLT/DIV: 1 V TIME/DIV: 2ms 0V
Procedure: 1. Keep the set horizontal. If the set is not horizontal, this adjustment cannot be performed due to the gravity against the 2-axis device. 2. Connect the oscilloscope TP (FOCUS-Y) and TP (VC) on the CD board. 3. Insert the disc (YEDS-18) in and close the lid for CD. 4. Put the set into test mode. (See page 14.) 5. Press the ( button. From focus searching, focus is turned ON while entering CLV drawing-in mode. Tracking and sled are turned OFF. 6. Press the ( button. [Both tracking and sled are turned ON.] 7. Adjust RV702 so that the waveform is as shown in the figure below. (Focus gain adjustment)
VOLT/DIV: 100 mV TIME/DIV:2ms 100 mV
high tracking gain high fundamental wave than for low gain VOLT/DIV: 1 V TIME/DIV: 2ms
0V
Note:
0V
VOLT/DIV: with the 10:1 probe in used.
10. Release test mode after adjustment is completed. � Inconnect Examples (DC level changes more than on adjusted waveform)
low focus gain VOLT/DIV: 100 mV TIME/DIV:2ms 250 mV 0V
Adjustment Location: CD board (See page 17.)
high focus gain VOLT/DIV: 100 mV TIME/DIV:2ms 100 mV 75 mV 0V
� 16 �
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