|
|
|
Categories
|
|
Information
|
|
Featured Product
|
|
|
 |
|
|
There are currently no product reviews.
 ;
It's complete and helpful manual with good quality of scan. Thanks very much.
;
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.
;
Exactly what was needed to assess the product - excellent value and great service
 ;
Nice to have the service manual for the Sony DCR-TRV345E now. The document is of excellent quality.
;
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.
IC DESCRIPTION IC, HD6473837UX
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 24 25 26 27 28 ~ 30 31 32 33 34 35 36 37 38 39 40 41 42 43 Pin Name LCD TP AVSS TEST X2 X1 VSS OSC1 OSC2 RESET MODE SDA SCL PWAD LCD RST KOUT0 KOUT1 NC DAC RST ENC/DEC DEC PUP DEC WRDY SCK2 NC SO2 PWR DEC PWR AMP VSS NC VCC LCD RD LCD WR LCD RS LCD CS KIN0 KIN1 KIN2 KIN3 KIN4 KIN5 KIN6 KIN7 I/O I � I O I � I O I I I/O I/O O O O O � O O I I O � O O O � � � O O O O I I I I I I I I LCD TEST PIN A/D Converter ground PIN Not for use in appllication systems. It should be connected to Vss. 32.768Khz crystal 32.768Khz crystal Ground 5MHz crystal 5MHz crystal When the this pin is driven low the chip is reset This pin controls system clock oscillation in the reset state. "IIC data line (MAS3507D,DAC3550A)" "IIC clock line (MAS3507D,DAC3550A)" Power down (AK4518) LCD RESET# (KS0713) Key scan out 0 Key scan out 1 Not connected DAC3550A RESET "H"=Encode (MP3/ADPCM), "L"=Decode(ADPCM) MAS3507D Power Up MAS2507D Ready MP3/ADPCM bitstreem clock out Not connected MP3/ADPCM bitstreem data out Power control Power control Ground Not connected 2.9V LCD read control pin LCD write control pin "LCD register select pin(L=control,H=data)" LCD chip select pin Key in 0(REPEAT/REC KEY)Pull-UP Key in 1(BASS/REW KEY)Pull-UP Key in 2(VOICE/STOP KEY)Pull-UP Key in 3(MP3/VOLUME_UP KEY)Pull-UP Key in 4(ERASE/VOLUME_DOWN KEY)Pull-UP Key in 5(A/B KEY) Pull-UP Key in 6(PLAY KEY)Pull-UP Key in 7(HOLD KEY)Pull-UP Description
17
|
|
|
> |
|
