Yamaha O2R96 Service Manual page 156

02R96
Test item for DSP6
1: CPU Interface (Data bus)
2: CPU Interface (Data bus)
3: CPU Interface (Chip Select, TXB) 3: CPU Interface (Address Bus)
4: CPU Interface (Address bus)
5: CPU Interface (BUS W/R Reg.) 5: E-RAM Interface (Address Bus)
6: DRAM Interface (Data Bus)
7: DRAM Interface (Address Bus)
8: DRAM Interface (Address Bus & MPR) 8: SIO Connection (DSP7 -> DSP7)
9: SIO Connection
(DSP6--->DSP6 SIO test)
Explanation about expression when DSP6 and DSP7 are
common, or when NG:
1) CPU Interface (Data Bus)
0000 0000 XXXX 0000 0000 0000 0000 X00X
MSB X=Error bit
Connection (DSP7 -> DSP6) ...
2) SIO
NG: 1 IC111(1)[Soxx] -> IC401(1)[Sixx]
1-7 MIDI Test
Contents: Sending/Receiving the string
"SCI2:TEST¥n"(¥n=0Ah) at 31.25Kbps from/
into MIDI OUT→MIDI IN, verify if identical.
Preparation: Connect MIDI OUT and MIDI IN connector
of the unit.
Example of execution screen
--- MIDI Loopback ---
OK MIDI Check
OK: SCI2
EXIT ([DEC Key]->[ENTER Key])
1-13 2TR IN/OUT (DIO) Test
Contents: Connect 2TR OUT DIGITAL 1,2,3 to 2TR IN
DIGITAL 1,2,3 and verify by using DSP SIO.
Preparation: Connect each MIDI OUT DIGITAL 1,2,3 and
each MIDI IN DIGITAL 1,2,3 connector of
the unit respectively.
Example of execution screen
--- 2TR IN/OUT ---
OK FS,SRC ON/OFF
OK OUT-->IN
OK DIR Lock(RERR)
OK DIT,DIR CH Status
NG: DIO IC114-SO62-->IC651-->IC902
-->IC903-->IC604-->IC101-SI30
EXIT ([DEC Key]->[ENTER Key])
156
Test item for DSP7
1: CPU Interface (Data Bus)
2: CPU Interface (Chip Select)
4: E-RAM Interface (Data Bus)
6: SIO Connection (DSP7 -> DSP6)
7: SIO Connection (DSP6 -> DSP7)
9: SIO Connection (ATSC -> DSP7)
A: SIO Connection (DSP7 -> ATSC)
IC number
... NG: IC401(1)
DSP number
(#1..#nn)
LSB
1-14 WORD CLOCK Test
Contents: Count FPGA over WORD CLOCK OUT→IN
for automatic judge (Fs=44.1/48/88.2/96kHz).
For the LOCK check of PLL, read the UNLOCK
signal for judge after the clock becomes stable
(after about 100ms).
The UnLock check of PLL inspect after
disconnecting the cable connected to
WORD CLOCK IN.
Preparation: Connect WORD CLOCK OUT→IN with
the BNC cable.
Set the 75 Ω switch on the WORD CLOCK
to ON.
Example of execution screen
--- WORD CLOCK ---
OK OUT->IN
NG PLL(DIR2,DBL)
NG PLL(DIR2,DBL) UnLock
NG:DBL_PLL_48K_COUNT=220
EXIT ([DEC Key]->[ENTER Key])
1-16 CASCADE Test
Contents: Send each signal from CASCADE OUT to
CASCADE IN for automatic judge.
Preparation: Connect CASCADE OUT to CASCADE
IN of the unit.
Example of execution screen
--- CASCADE ---
OK WCK
OK SIO
OK COM
NG LINES
OK ID Read
NG: CAS:AUX1-2 [W:12345678 -> R:00FF0011]
EXIT ([DEC Key]->[ENTER Key])