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There are currently no product reviews.
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The service was quick and simple, finding the service manual easy and it appears to be the original with colour schematics. It contained the info I was after and so sorted the problem.
I have copied it to CD and attached the envelope to the inside back cover of the owners manual. Good manual and excelent service. Robin Wood, Wood Electronics, New Zealand.
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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 :)
CPU (HD6433298A36P)
The 16-bit CPU contains a 32k-bit ROM, a 1k-bit RAM, seven 8-bit I/O ports, an A/D convertor and serial interfaces. The CPU accesses to the working strage RAM, the DSP and the key touch LSI. The CPU also controls buttons, bender input, LEDs and MIDI input/output. The following table shows the pin functions of the CPU. Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17, 18 19, 20 21 22 23 ~ 29 30 31 ~ 38 39 40 41 ~ 56 48 57 ~ 64 Terminal P40 P41 P42 P43 P44 P45 P46 P47 TXD RXD P52 -RESET -NMI VCC -STBY VSS XTAL,EXTAL MD1, MD0 AVSS AN0 P71 ~ P77 AVCC P60 ~ P67 VCC P27 P26 ~ P10 VSS P30 ~ P37 Out In In/Out Out In Out In Out In In In In In In In In In In In Out In In/Out Out Out Out Out Out KO signal data output Clock for KO signal data APO (Auto Power Off) signal output. ON: High OFF: Low Read enable signal output Write enable signal output Not used 10 MHz clock output Wait signal input. Connected to +5 V. MIDI signal output MIDI signal input Reset signal output Reset signal input Power ON signal input +5 V source Standby signal input. Connected to +5 V. Ground (0 V) source 20 MHz clock input Mode selection input.(Internal ROM mode --- MD1: High MD0: Low) Ground (0 V) source for the built-in DAC Analog input. Connected to ground. Ternimal for button input signal +5 V source for the built-in DAC LED segment signal output +5 V source Not used Address bus Ground (0 V) source Data bus Function
Digital Signal Processor (HG51B155FD)
Upon receipt of note numbers and their velocities, the DSP reads sound and velocity data from the sound source ROM in accordance with the selected tone; the DSP can read rhythm data simultaneously when a rhythm pattern is selected. Then it provides 16-bit serial signals containing data of the melody, chord, bass, and percussion to the DAC. The DSP also adds the selected effect to the sound data using a 64k-bit RAM. The following table shows the pin functions of the DSP.
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 $4.99 AT1 CASIO
Owner's Manual Complete owner's manual in digital format. The manual will be available for download as PDF file aft…
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