SERVICE MANUAL - Nexo

NXAMP4x44-11. FLASH test4-13. SLOT testPress the [B] button to start the test. The following displayappears.Rear panelExpansion slotPress the [B] button to continue the test. The test executesautomatically.If the test result is OK, the display automatically returnsto the test menu screen.(If an error occurs, “ERROR” appears and the test programis stopped.)4-12. FAN testPress the [B] button to start the test. The following displayappears.The FAN starts rotating at low speed.Check that the FAN rotates at low speed, and press the[B] button to continue the test. The following display appears,and the FAN rotates at middle speed.Check that the FAN rotates at middle speed, and pressthe [B] button to continue the test. The following displayappears, and the FAN rotates at high speed.Check that the FAN rotates at high speed, and press the[B] button to return the display to the test menu screen.(Turn off the power to this unit, and insert the SLOT jiginto the expansion slot. Restart the test program, andselect this test.)Press the [B] button to start the test. The test executesautomatically.If every signal is normal, the following display appearsand the LED of the SLOT jig lights.(If an error occurs, “ERROR” appears and the test programis stopped.)Input the 1 kHz, -10 ±1 dBu sine wave to the channel1 input terminal and confirm that the output voltageobtained at the channel 1 output terminal is +24.1 ±2.0dBu.If OK, press the [B] button to return the display to thetest menu screen.4-14. ATTENUATION testPress the [B] button to enter the attenuation test mode.The following display appears.Perform the test according to the “Inspection with attenuationtest mode”. (See page 79).If OK, press the [B] button to return the display to thetest menu screen.68