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There are currently no product reviews.
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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.
R-SG7/SG7G
CIRCUIT DESCRIPTION
5. TEST MODE
5-1 AMP test mode using main unit's keys
� Entering the AMP test mode Turn on the power while pressing the[BAND] key. � Canceling the AMP test mode By turning off the power, the systen is initialized and the test mode is canceled. 5-1-1 Contents of AMP test mode (1) Automatic on/standby ON � The POWER ON state is entered when the power is turned on whille pressing the [BAND]key. All functions are then initialized and activated in the all-lighting mode. � Sub-clock oscillation diagnosis function The oscillation diagnosis (existence of oscillation and measurement of period) of a sub-clock is performed before the test mode is entered. If the diagnosis result is OK,the system enters the test mode. If the diagnosis result is NG,the oscillation of the sub-clock is diagnosed again. If the result is OK, the system enters the test mode. If the diagnosis result is continuously NG five times, the system stops with ERR1 and ERR2 displayed. (2) All- lighting mode � All the fluorescent display indicators and LED lamps light when the power is turned on while pressing the [BAND] key. After that, all- lighting mode is canceled when any main unit's key is pressed. The normal display is obtained when the selector is set to TUNER then appears. (3) Others � The AMP test mode is not terminated even if the selector is set to positions other than TUNER. � In the AMP tesst mode,the muting during mode selection is not controlled. However, the operation during the power-on sequence is the same as the normal operation. � The SP protection operation is also the same as the normal operation. � In the AMP test mode using main unit's keys,the keys below provide a special operation according to the position where the selector is set. The main unit key's except described below and the rotary encoder provide the normal operation. (4) When selector is set toTUNER Keys Operation PURE A Increase the P.CALL every time this key is pressed. N.B./TONE Decrease the P.CALL every time this key is pressed. ENTER Selects the display cyclically in the order below every time this key is pressed. 1 Write data in the unused area of E2PROM, then read the written data. If the read data is the same as the written data, RAM OK is displayed in the fluorescent display indicator. If the former is the different from the later, RAM NG is displayed. 2 Set the TUNER ATT to OFF and display the S level in hexadecimal when the [ENTER] key is pressed . (ATT OFF V V is displayed in the fluorescent display indicator.) 3 Set the TUNER ATT to ON and the display S level in hexadecimal when the [ENTER] key is pressed. (ATT ON V V is displayed in the fluorescent display indicator.) * The special display using the [ENTER] key is continued until the next operation is carried out. ( V V : S LEVEL) When keys other then ENTER are pressed in items 1 to 3 above, the TUNER ATT is set to OFF and the normal display appears. The operation corresponding to the key that has been pressed performed in this case. (5) When selector is set to positions other than TUNER. 1 ENTER and PURE A keys. The master volume level is selected cyclically, while pressing the [ENTER] key. Value of Master Press the Press the PURE A key, volume. ENTER key. then press the ENTER key. MAX 86 16.00 MID 40 8.00 MIN 1 0.20 2 AUTO/MONO key. Selects the mute operation and equalizer cyclically in the order below for operation display every time this key is pressed. KEY OPERATION AUTO/MONO *In the operation for except the AUTO key, become precondition equalizer. *Pre -condition : The equalizer becomes the condition to be pushed the AUTO key before (include N.B. circuit). 3 BAND and tuning UP/DOWN keys. KEYS OPERATION BAND Every time this key is pressed, all the displays go off and the normal display is selected cyclically. TUNING UP/DOWN
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