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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.
CT-L5
6.2.1 Playback Section
(1) Tape Speed Confirmation
No. 1 Mode PLAY Input Signal/Test Tape NCT-111 (3 kHz) Adjustment Points VR2701 (Main Unit) (Refer to Fig. 6�4) Measurement Points TP R (W183) ( MAIN UNIT) Adjustment Value Remarks FWD adjustment REV Confirmation ( 3000 Hz +60 Hz ) �60
3000 Hz
+10 �10
Hz
(2) Head Azimuth Adjustment
¶ This unit is equipped with auto tape selector. ¶ Do not switch between forward and reverse operation with the screwdriver inserted.
No. Mode Input Signal/Test Tape Adjustment Points Head azimuth adjustment Screw (Fig. 6�4) Measurement Points TP L (W185) TP R (W183) ( MAIN UNIT) Adjustment Value Max. Playback signal level Remarks After adjustment, apply silicon bond to the head azimuth adjustment screw.
1
PLAY
STD-331E test tape (Playback: 10 kHz, �20 dB)
(3) Playback Level Adjustment
¶ Since this adjustment determines playback DolbyNR level, Perform it carefully.
No. Mode Input Signal/Test Tape Adjustment Points L ch R ch Measurement Points TP L (W185) TP R (W183) ( MAIN UNIT) Adjustment Value Remarks
1
PLAY
STD-331E test tape (Playback: 315 Hz, 0 dB)
VR2301 VR2302
�3.7 dBV
6.2.2 Recording Section
(1) Recording Bias Adjustment
¶ After the adjustment, caution should be exercised so as not to become under bias by checking the distortion rate.
No. Mode Input Signal/Test Tape Adjustment Points Measurement Points Adjustment Value Remarks
1
REC/ PAUSE REC = PLAY
Input a 315Hz signal to the AUX � terminal of XC-L5. Load the STD�632 test tape and record/playback the 315Hz and 10kHz signals. (see the Note below)
Input signal level L ch R ch
�23.7 dBV
TP L (W185) TP R (W183) ( MAIN UNIT) Repeat adjustment until playback level of the 10kHz signal is within 0.5dBV ±0.5dB from that of the 315Hz signal.
VR2801 VR2802
2
Note: Set the 10kHz input signal level to the same value as the 315Hz input signal level of step 1.
(2) Recording Level Adjustment
No. Mode REC/ PAUSE REC = PLAY Input Signal/Test Tape Input a 315Hz signal to the AUX � terminal of XC-L5. STD�632 test tape and record/ playback the 315Hz signal. Adjustment Points Measurement Points Adjustment Value Remarks
1
Input signal level L ch R ch
�7.7 dBV
TP L (W185) TP R (W183) ( MAIN UNIT) Repeat recording, playback and adjustment until playback level of the 315Hz signal becomes �7.7dBV±0.5dB.
VR2441 VR2442
2
*:
In case of adjustment as a single unit, enter the signal at 13P(RECL) and 15P(RECR) of CN2601(MAIN UNIT). At this time, connect an output buffer amplifier to the oscillator, and then connect a series resistor (180 �) after the impedance has become sufficiently low. (For MPX filter impedance matching)
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