2Tr In/Out (Dio) Test; Adat Test; Word Clock Test; Midi Test - Yamaha 01v 96 Service Manual

01V96
Example of execution screen
DSP6 test items
1: CPU Interface (Data bus) 1: CPU Interface (Data Bus)
2: CPU Interface (Data bus) 2: CPU Interface (Chip Select)
3: CPU Interface (Chip Select, TXB) 3: CPU Interface (Address Bus)
4: CPU Interface (Address bus) 4: E-RAM Interface (Data Bus)
5: CPU Interface (BUS W/R Reg.) 5: E-RAM Interface (Address Bus)
6: DRAM Interface (Data Bus) 6: SIO Connection (DSP7 → DSP6)
7: DRAM Interface (Address Bus) 7: SIO Connection (DSP6 → DSP7)
8: DRAM Interface (Address Bus & MPR) 8: SIO Connection (DSP7 → DSP7)
9: SIO Connection
(DSP6--->DSP6 SIO test) A: SIO Connection (DSP7 → ATSC)
Explanation of display when DSP6 and DSP7 are common
or 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 IC201 S0[xx] -> IC301 SI[xx]

1-6. MIDI test

Contents: Send/Receive the character string
"SCI2:TEST¥n" (¥n = 0Ah) from/to MIDI
OUT → MIDI IN at 31.25 Kbps and check
that the sent and received strings are
identical.
Preparation: Connect the MIDI IN connector to the
MIDI OUT of the unit with a MIDI cable.
Example of execution screen
--- MIDI Loopback ---
OK MIDI Check
OK: SCI2
EXIT ([DEC] Key->[ENTER] Key)
92
All items are selected
automatically and cannot
be selected manually.
Items are displayed one
after another after "1:"
during execution.
Details are displayed
when NG is determined.
When there are many
NG items, the display
stops after about 20 items.
DSP7 test items
9: SIO Connection (ATSC → DSP7)
B: SIO Connection (ATSC → ATSC)
IC number
... NG: IC201
LSB

1-11. 2TR IN/OUT (DIO) test

Contents: Use the DSP SIO and check 2TR OUT
DIGITAL → 2TR IN DIGITAL.
Preparation: Connect the 2TR IN DIGITAL to the 2TR
OUT DIGITAL of the unit with a cable.
Example of execution screen
--- 2TR IN/OUT ---
OK FS
OK OUT-->IN
OK DIR Lock (RERR)
OK DIT,DIR CDIN, CDOUT
NG: DIO_SIO 2TR1 [W:12485100 -> R:00000000]
EXIT ([DEC] Key->[ENTER] Key)

1-12. ADAT test

Use the ATSC2 and check ADAT OUT →
Contents:
ADAT IN.
Preparation: Connect the ADAT IN to the ADAT OUT
of the unit with a cable.
Example of execution screen
--- ADAT ---
OK ADAT OUT->IN
OK: ADAT
EXIT ([DEC] Key->[ENTER] Key)

1-13. WORD CLOCK test

WORD CLOCK OUT → IN is counted by
Contents:
PLLP2 and automatically checked (Fs =
44.1/48/88.2/96 kHz). For the PLL LOCK
check, Read the UNLOCK signal and
check when the clock is stable after the
FS change (after about 200 ms).
To confirm the UnLock, disconnect the
cable connected to WORD CLOCK IN
and check.
Preparation: Connect the IN to the WORD CLOCK
OUT of the unit with the BNC cable.