Yamaha MR816x, Service Manual

Page: 41 / 107

41
MR816CSX/MR816X
TEST PROGRAM
1. Preparations
Jig
• IEEE1394 repeater hub 2 pcs.
[ex.:1394-RP2GPH by Sanwa Supply]
• IEEE1394 cable
2 pcs.
• RCA pin cable 1 pc.
• Optical digital cable 1 pc.
• BNC-BNC cable 1 pc.
• Stereo PHONE cable (TRS) 1 pc.
Measuring Instruments
• Level meter (JIS-C fi lter)
• Frequency counter
• Distortion meter
• Oscilloscope
• Jitter meter
2. How to enter the Test Program mode
①
While holding down the [ASSIGN 2] encoder and
[QUICK CONNECT 4] buttons, turn on the power.
(Fig. 1)
②
Release the buttons when the Firmware version* of the
MR816CSX/MR816X is shown to enter the test program
mode.
③
The LED will be as shown in Fig. 2 in the test program
mode.
*: Refer to "FIRMWARE VERSION CHECK" on P.34.
(Fig. 2)
3. Test program item list
(Table 1)
“No. 0: ANALOG test mode” will be selected just after
entering the test program mode.
Wordclock source is INTERNAL 96 kHz.
“Analog test mode” will always be selected when none of
the “Memory”, “LED”, “Switch”, “Encoder” or “Digital I/O”
test is being conducted.
4. Selection of test item, executing procedure and
indication of results
4-1. Turn the [ASSIGN 1] encoder to select a test item.
LEDs around the [ASSIGN 1] encoder light to
indicate which test is selected. Refer to Fig. 3 for
correspondence between LEDs and test items.
4-2. Turn the [ASSIGN 1] encoder to select a test item and
then press the [ASSIGN 1] encoder to execute the test.
4-3. The LEDs around the [ASSIGN 2] encoder will indicate
the test result. (Lighting: OK, Not lighting: NG,
Blinking: Not tested (No.0: Analog test mode))
Refer to Fig. 3 for an LED corresponding to each test
item.
(Fig. 3)
4-4. Turn off the power of the MR816CSX/MR816X to
leave the test program mode.
No. Item
0 ANALOG
1 MEMORY
2 LED
3 SWITCH
4 ENCODER
5 DIGITAL I/O
6 1394_CONNECT
MR816CSX Only Power
ASSIGN 2
QUICK CONNECT 4
ASSIGN 2 ASSIGN 1
6. 1394 CONNECT
4. ENCODER
3. SWITCH
1. MEMORY
2. LED
5. DIGITAL I/O
6. 1394 CONNECT
4. ENCODER
5. DIGITAL I/O
3. SWITCH
1. MEMORY
2. LED
Result of tests
Lighting:
The result is successful
Not Lighting:
The result is unsuccessful
Blinking:
No. 0 Analog test mode
The LED corresponding to the selected test item lights up.
MR816CSX Only
Lighting
Blinking
[SIG/PEAK] The LED lights up in green
[QUICK CONNECT 4] LED lights up
Clock source indication (UNLOCK: Blinking, LOCK: Lighting)
Synchronous sampling frequency indication