Yamaha QL5 Service Manual

QL5/QL1
132
1-6. DSP6 test
1-7. DSP7 test
Contents Checks the condition of the address bus line and data
bus line by writing/reading each register of DSP6/
DSP7.
Compares and checks DSP6 and DSP7 by writing /
reading to DRAM and SDRAM of each DSP6 and
DSP7 through registers.
Checks the SIO connection between DSPs (including
SHARC) by transmitting and receiving signals.
Example of executing screen
DSP6 test items and display provided during execution.
1: CPU Interface (Data Bus) .................................................OK
2: CPU Interface (Data Bus) .................................................OK
3: CPU Interface (Chip Select, TXB)....................................OK
4: CPU Interface (Address Bus) ............................................OK
5: CPU Interface (BUS W/R Reg.) .......................................OK
6: DRAM Interface (Data Bus) .............................................OK
7: DRAM Interface (Address Bus) .......................................OK
8: DRAM Interface (Address Bus & MPR) ..........................OK
9: SIO Connection.....OK .......................DSP6→DSP6 SIO test
A: PIO Connection.....OK .......................DSP6→DSP6 SIO test
1-4. RTC test
Contents Obtains and sets Real Time Clock.
Example of executing screen
The automatic check (AUTO) is executed. First, sets the
time preset in PC, waits for 1 seconds and judges OK if the
difference with the obtained time is within 1 to 3 seconds.
If it is not possible to set or obtain the time, or the time
difference is below 1 second or more than 3 seconds, judgment
is NG.
1-5. PLLPU test
Contents Checks the condition of the address bus line
(A0....A4) and data bus line (D0....D15) by writing/
reading the register of PLLPU.
Example of executing screen
Display in case the check result is NG
NG:ADD[080A:5555]→[080A:FFFF] ← WhenaddressbusisNG
NG:DATA[080A:0001]→[080A:FFFF] ← When data bus is NG
Address bus which is judged as NG.
Data bus which is judged as NG.
write data
read data
write data
read data

Yamaha QL5 Specifications

General

DJ mixer	-
Product color	Black
Video capability	No
Channels quantity	72 channels
Supported sample rates	44.1, 48 kHz
Digital sound processing	- bit
Phantom power	48 V
AC input voltage	100-240 V
AC input frequency	50 - 60 Hz
Power consumption (typical)	200 W
Total Harmonic Distortion (THD)	0.05 %

Weight and Dimensions

Depth	563 mm
Width	828 mm
Height	272 mm
Weight	21800 g