Yamaha DME24N, Service Manual, Page: 101 / 289

DME24N/DME64N
101
w
COM Terminal Connection Jig for RS232C/422 Loop
Back Test (For DME64N/24N)
Use a D-SUB 9P female connector that terminals
are short-circuited as shown below.
Fig. 3. COM Terminal Connection Jig for RS232C/422
Loop Back Test
e
Serial Communication Jig
· PC-SER Test Jig: (AAX58590)
r
MY-SLOT Check Ver. 2 Test Jig (AAX59920)
1-0-2 Starting Test Program
To start the test program, turn [POWER ON] → YAMAHA
logo appears, then press [U[ENTER] keys and
release the keys. Test Category Selection List appears
on the display.
1-0-3 Test Category Selection List Screen
Total test and test for each sheet are displayed for each
category in a list format.
※: See the service manual of MY16-C for details of
the MY16-C test.
Select a category that you want to perform from the Test
Category Selection List, and press the [ENTER] key.
Testing Item Selection List appears corresponding to
the selected category. Use JOG or [
↑ ] [ ↓ ] key ([ ↑ ]
= [F2], [ ↓ ] = [F5] for ICP1) to select an item.
1-0-4 Testing Item Selection List Screen
A list screen image for the Product (Total) Test is shown
below.
Fig. 4. Test Category Selection List Screen
Fig. 5. Testing Item Selection List Screen
∗∗
Diag Category Menu
∗∗
Ver. 1.00
02. Product (JITTER)
03. DM Sheet
01. Product
∗∗
Diag Category Menu
∗∗
Ver. 1.00
11.
08. AD Sheet
09. DA Sheet
10. MY16C
Spec TEST MODE
12. E x i t D i a g M o d e
∗∗
Diag Menu Ver. 1.00
∗∗
Total Result [ ]
01. PLLP2
02. BATTERY
00. RESERVE
∗∗
Diag Menu Ver. 1.00
∗∗
Total Result [ ]
14. LCD
15. PANEL LED-2
11. MY—SLOT
12. WORD CLOCK
13. GPI
∗∗
Diag Menu Ver. 1.00
∗∗
Total Result [ ]
21. PHONES
22. JITTER
23. Category Menu
5 4 3 1 2
6 7 8 9
D-SUB 9P
female connector