Furuno FS-1570, Руководство по обслуживанию

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6.5 TEST function in DSC SETUP menu
6-18
PANEL PCB test
The “LCD”, alarm LEDs, keys and the knob are tested.
- LCD: LCD is tested by four patterns.
- CONTRAST: LCD contrast is tested. The larger the number, the higher the
brightness.
- BACK LED: Backlight LEDs for keyswitches are tested.
- ALARM LED: ALARM and DISTRESS LEDs are tested.
- KEY INPUT: Keys except for [CANCEL] and [POWER]SW are tested. Acronym
on the key top appears when the key is pressed.
- ENCODER: Rotating the knob from fully ccw to fully cw changes the indication
from –99 to +99.
T-CPU PCB test
The T-CPU PCB test is made on two pages. The result is showed by OK or NG.
- FROM: Shows T-CPU program version. The program is installed on Flash ROM (U4).
- EEROM: Shows the read/write test result of EEPOM (U5).
- SRAM: Shows the read/write test result of SRAM (U6 and U7).
- DSC: Shows the DSC program version.
- NBDP: Shows the NBDP program version.
- NMEA: Loopback test of the NMEA data line. The same as REMOTE test on page
6-16. The test jumper is required.
- DMC: Loopback test of DMC data line. The same as REMOTE test on page 6-16.
- MIF: Loopback test of MIF data line. The same as REMOTE test on page 6-16.
- RX1: W/R1 board is tested. The same as RCVR-1 in DSC self test. See page 6-1.
- RX2: W/R2 board is tested. The same as RCVR-2 in DSC self test. See page 6-1.
- TRX: TX/RX circuit is tested. The same as TRX in DSC self-test. See page 6-1.