Yamaha CS1D Service Manual page 132

CS1D
14-1.CS1D-DIGITAL I/O (COAXIAL 1-2) TEST
This test checks the digital I/O coaxial terminal (STO port -> STI port).
14-1.CS1D-DIG I/O(COAXIAL) OK
* W.CLK 75ohm SW
OK
* W.CLK
OK
In 48 kHz + 6%
In 44.1kHz - 10%
Jitter 48 kHz
Jitter 44.1kHz
DIR2
In/Out
* COAXIAL 1 (St.OUT A ->2Tr.IN 1)
OK
* COAXIAL 2 (St.OUT B ->2Tr.IN 2)
OK
Detects PLL for valid detection (IC301 of IFC3 sheet).
NG sample
Please refer to page 111 for NG chart.
14-2.CS1D-DIGITAL I/O (AES/EBU 1-2) TEST
This test checks whether or not audio data and channel status signals are correctly transmitted and received at the digital I/O
AES/EBU terminal (STO port -> STI port).
14-2.CS1D-DIG I/O(AES/EBU) OK
* AES/EBU 1 (St.OUT A ->2Tr.IN 1)
OK
* AES/EBU 2 (St.OUT B ->2Tr.IN 2)
OK
14-3.CS1D-DIGITAL I/O (AES/EBU 3-6) TEST
This test checks whether or not audio data and channel status signals are correctly transmitted and received at the digital I/O
AES/EBU terminal (STO port -> AEI port).
123
14-1. CS1D-DIG I/O (COAXIAL 1-2)
W.CLK 75ohm SW: OK
W.CLK: OK
In48kHz + 6%: OK
In44.1kHz - 10%: OK
Jitter48kHz: OK
Jitter44.1kHz: OK
DIR2 OK
In/Out: OK
LED2: OK
COAXIAL 1 (St.OUT A -> 2Tr.IN 1): OK
COAXIAL 2 (St.OUT B -> 2Tr.IN 2): OK
14-2.CS1D-DIG I/O (AES/EBU 1-2)
AES/EBU 1 (St.OUT A ->2Tr.IN 1): OK
AES/EBU 2 (St.OUT B ->2Tr.IN 2): OK
For the 75 switch items, the pop-up box below is displayed, so send any
clock with the function generator and judge visually with the oscilloscope.
Please check [WordClock 75ohm SW].
OK
Normal oscilloscope behavior
for 75 switch
The pop-up box below is displayed for items requiring connection changes.
Press OK to start the check.
Please prepare for [48kHz + 6% W.CLK].
After the check is started with the above pop-up box, a pop-up box is
displayed for the inspector to enter the results of their visual check, OK or
NG.
Please check [Jitter (48kHz)].
OK
NG example
14-2.CS1D-DIG I/O(AES/EBU)
* AES/EBU 1 (St.OUT A ->2Tr.IN 1)
OK
* AES/EBU 2 (St.OUT B ->2Tr.IN 2)
OK
Now Checking ...
AES/EBU 2
NG
ON OFF
OK
NG
14-2.CS1D-DIG I/O (AES/EBU 1-2)
AES/EBU 1 (St.OUT A ->2Tr.IN 1): NG
AES/EBU 2 (St.OUT B ->2Tr.IN 2): NG