Yamaha SP2060 Service Manual page 38

SP2060
Press the [ ↓ ] and [ ↑ ] keys of the personal computer to move "*" mark at the position of "01 Product-SP2060", and press the [0]
2-4.
(zero) key. (The manual mode is selected.)
Then the testing item selection list screen is displayed.
Example of testing item selection list screen
** Diag Mode **
Total Result [ ]
* 00 RESERVE-SP2060
01 SRAM
02 BATTERY
03 PLLP2
04 DSP7
10 WCLK
13 LCD
14 LED
15 SW
17 DIGITAL IN
20 ANALOG
21 ==> Category Menu
Press the [ ↓ ] and [ ↑ ] keys of the personal computer to move "*" mark at the position of the test item which you wish to execute
2-5.
and press the [ENTER] key. Then the selected test is started.
• The test items No. 01, 02, 03, 04 and 10 are executed automatically.
• The test items No. 13 and 14 are executed visually.
• The test items No. 15, 17 and 20 are executed semi automatically.
2-6. The test results, OK or NG, are displayed on the testing item selection list screen.
Test items table
No. Test item
01 SRAM
02 BATTERY
03 PLLP2
04 DSP7
10 WORD CLOCK
13 LCD
14 LED
15 SWITCH
17 DIGITAL IN
20 ANALOG
38
OK 

OK

NG
Check the address bus and data bus.
Check the voltage of the back-up battery.
Check the register of the gate array PLLP2 by reading/writing.
Check the register of DSP7 by reading/writing.
Count the Fs of the oscillator using WCLK IN and check the lock state of PLL.
Check that the entire screen is displayed in black and white.
Check that the LED lights in the specified order.
Check switches by pressing them in the specified order.
Check the word clock audio data using DIGITAL IN.
Check the mute control.
Test results
Outline of tests Judge
Auto
Auto
Auto
Auto
Auto
Visual check
Visual check
Semi-auto
Semi-auto
Semi-auto