Yamaha O2R96 Service Manual page 155

1. Service Check
Common contents
1) The contents and example screens of execution for
each check item are displayed.
Common preparation
1) Objectives to be checked: 02R96 + MB02R96
2) Cable: MIDI cable: 2
CANNON cable: 2
COAXIAL cable: 1
BNC cable: 1
D-SUB 68pin (CASCADE) cable: 1
3) How to During normal operation, pressing the
Start 02R96: [SEL] key in the order CH [6, 7, 1, 1]
and pressing the [ENTER] key will
display the dialogue box for approval.
After this, selecting YES and pressing
the [ENTER] key will restart the
02R96 in the Service Check mode.
4) Ending method: Switch off the power to escape from
the inspection mode.
Connection diagram of Service Check
02R96
2TR OUT D1
2TR OUT D2
2TR OUT D3
WCLK OUT
TO HOST-SERIAL
TO HOST-USB
SLOT1
TIME CODE-MTC
TIME CODE-SMPTE
SLOT2
SLOT3
SLOT4
2TR IN D1
2TR IN D2
2TR IN D3
WCLK IN
CASCADE
IN
CASCADE
OUT
MIDI IN
OUT
THRU
CONTROL
MB02R96
METER
1-1 MCS(FPGA) Test
Contents: Read/Write the Reg. (00, 0f, 10, 11, 15, 16)
of FPGA to compare and judge and then
readout the Reg.12 (Ver) and display it.
Example of execution screen
--- MCS(FPGA) ---
NG Adrs,Data BUS
OK Ver.Check
Version: 0212
NG: MCS Wxx:12 --> Rxx:FF
EXIT ([DEC Key]->[ENTER Key])
For the Ver.Check test, select OK when "Version: 0212" is
displayed.
1-2 BATT Test
Contents: Measure the voltage of the backup battery
in A/D for automatic judge.
Example of execution screen
--- BATT ---
OK BATT
NG:BATT (2.56V)
EXIT ([DEC Key]->[ENTER Key])
1-4 DSP6, S10 Test
1-5 DSP7, S10, ATSC2 test
Contents: Check DataBUS and AddressBUS for good
or bad by Writing/Reading the Register of
each DSP6 and DSP7.
Compare and check by Writing/Reading
DRAM and SDRAM of each DSP6 and DSP7
through the Register.
Check the SIO connection between each
DSP, and between ATSC by sending/
receiving signal.
Example of execution screen
--- DSP6 ---
OK DSP6,SIO
1: CPU Interface (Data bus)
NG: TxBusy
--- DSP7 ---
OK DSP7,SIO,ATSC2
1: CPU Interface (Data bus)
NG: BIF #01 0000 XXXX 0000 ...
EXIT ([DEC Key]->[ENTER Key])
02R96
Reg.12 (Ver) is
displayed
Displayed when NG.
Certified voltage range
2.80V~3.50V
Below 0.5V is NG:
BATT NONE
Items are not selectable
since all items are auto
matically selected.
During execution,
displayed one after
another from "1:".
Details when NG are displayed.
Too many NGs will stop the
display within about 20.
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