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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 servo circuit of this model is designed to be adjustment-free and the adjustment value and disc distinction (CA-DA. CD-R and CDRW etc.) is adjusted by within the IC. Therefore the adjustment is performed by each TOC reading. The adjustment conditions within the IC of each servo can be monitored in this test mode.
1. How to start the Test Mode
Starting method of the test mode differ depending upon the type of disc being used. This is because the adjustment values of each servo also differ depending upon the type of disc. When using the CD-DA or CD-R 1) Short-circuit the test land and the OPEN/CLOSE SW land. 2) Insert the AC plug and install the CD-DA or CD-R disc. 3) Press the PLAY and STOP buttons in this sequence and read the TOC. 4) Press the DISPLAY/ENTER button and confirm that all LCD light up. When using the CD-RW 1) Short-circuit the test land and the OPEN/CLOSE SW land. 2) Insert the AC plug and install the CD-RW disc. 3) Press the PLAY, STOP and DSL buttons in this sequence and read the TOC. The LCD display should display CD-r at this point. 4) Press the DISPLAY/ENTER button and confirm that all LCD light up. Note 1) If the TOC cannot be read, press the DISPLAY/ENTER button once �Err� has appeared on the LCD, causing all the LCDs to become lit up. The following steps 2 and 3 can be confirmed even if the TOC cannot be read. Note 2) By repeatedly pressing the DISPLAY/ENTER button, all LCD will light up and the TOC display will be repeated. Note 3) By repeatedly pressing the DSL button, the �CD-d� and �CD-r� displays will be repeated. When the LCD displays �CD-d,� ¡ CD-DA, CD-R is selected. When the LCD displays �CD-r,� ¡ CD-RW is selected. Note 4) The test mode is cancelled by disconnecting the AC plug and removing the soldering of short land.
2. DISC distinction (confirmation of FE waveform)
This mode is possible to perform a confirmation of the disc distinction. Confirmation method 1) Press the DSL button and select �CD-d� or �CD-r� (Refer to Note 3). 2) Install the disc. 3) Press the MODE button. The LCD will change as follows. Example: Test disc: TCD-782, DISC type select: CD-d, Judgement value: 7F, Measurement value: 3D BE.
Judgement value
Measurement value
*All numerical values are displayed in HEX What disc the IC has selected can be understood according to this judgment value. The decision standard of IC is as follow. LCD displays �CD-r� 0 < Judgment value < 10 10 < Judgment value < 32 32 < Judgment value < C8 C8 < Judgment value LCD displays �CD-d� No disc CD-RW CD-DA and CD-R No disc No disc CD-RW CD-DA and CD-R
The state of the FE waveform can also be understood from this judgment value.
3. Confirmation of sled movement
By pressing the F. SKIP or B. SKIP button continuously when all LCD light up, it is possible to transfer the pick-up to either the outer circumference or the inner circumference (the LCD is to remain all light up).
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