Service manual
* RQ OK
5-1. AO8-IPC2 [PortA] Test OK
5-1. AO8-IPC2 [PortA] Test
SI: OK
RQ: OK
AK: OK
W.CLK: OK
CONTROL: OK
MSB/LSB: OK
2CH/4CH: OK
ID: OK
* SI OK
* AK OK
* W.CLK OK
* CONTROL OK
* ID OK
* MSB/LSB OK
* 2CH/4CH OK
In
Out
NG
NG
NG
NG
NG
5-1. AO8-IPC2 [PortA] Test
5-1. AO8-IPC2 [PortA] Test
NG
NG example
Change to [B port] and push OK Button.
OK
When changing to the next port, a pop-up
box like that on the right is displayed.
* RQ
* SI
* AK
* W.CLK
* CONTROL
* ID
NG
* MSB/LSB
NG
* 2CH/4CH
In
Out
SI: NG
RQ: NG
AK: NG
W.CLK: NG
CONTROL: NG
MSB/LSB NG
2CH/4CH: NG
ID: NG
In NG
Out NG
Now Checking …
2CH/4CH
AO8
26
ON OFF
For the 75 item, the pop-up box is displayed below and the inspector judges
visually on the oscilloscope.
Please check [WordClock 75ohm SW].
NGOK
Normal behavior on the
oscilloscope for 75 switch.
For the jitter ** kHz item, the pop-up box is displayed with the system in the
48/44.1 kHz output state to ask the user to measure the jitter. The inspector
judges the jitter.
Please check [Jitter (48kHz)].
NGOK
Please check [7segment LED].
NGOK
When moving from the jitter measurement to the In/Out check, the the pop-up
box is displayed to ask the user to check the connections.
Connect [AO8 BNC Out] to [AI8 BNC In].
OK
For the LED lighting order, see *1. If the LEDs light this way, they are OK.
(*1) 7-segment LED lighting order
0.0. 1.1 .2.2. · · · 9.9.
* Input Selector SW
4. AO8-IPC4, LED2 Test OK
4. AO8-IPC4, LED2 Test
OK
OK
* W.CLK 75ohm SW OK
* 7segments LED OK
* W.CLK OK
In 48 kHz + 6%
In 44.1kHz - 10%
Jitter 48 kHz
Jitter 44.1kHz
In/Out
Input Selector SW:
OKWordClock 75ohm SW:
OK7segments LED:
OKW.CLK:
7segment LED= xx
4. AO8 - IPC4, LED2 test
This test checks around the AO8 - IPC4 and LED2.
When other checks are necessary, the pop-up dialog box is displayed to ask the inspector
to select OK or NG and the system stands by until the inspector makes a selection.
The current switch status is displayed in real time and the inspector looks at the behavior
of the system and judges it OK/NG.
Same as up till here
5. AO8 - IPC2 test
This test checks around the AO8 - IPC2. Ports A and B are both checked, so the same procedure is carried out in 5-1 for Port A and
in 5-2 for Port B.
Same as up till here