Furuno FE-700 - Manual (Page 31)

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6.6 Diagnostic Test
The diagnostic test checks the ROM, RAM, color
bar and keyboard for proper operation.
1. Turn on the power while pressing any key.
Release the keys when the following display
appears.
EXTENSION MODE
+ : TRANSDUCER SETTING
- : TEST
▲ : CLEAR MEMORY
▼ : DEMONSTRATION
SELECT MODE
2. Press the [-] key.
RANGE: 4
GAIN : 150
MODE : 5
BATTERY : OK
PROGRAM No.: 0252297002
Key status
Gain knob setting
Position of Mode knob
Position of Range knob
Color bar
(16 colors)
ROM : OK
DRAM : OK
SRAM : OK
3. The ROM, DRAM, SRAM and internal
battery are checked and the results are
displayed as OK or NG (No Good).
If NG appears, contact your dealer for
advice.
4. Press and release each key (except the
POWER switch) one by one. If the key is
normal, its on-screen location lights in black
while the key is pressed.
5. Operate the controls. The RANGE and
MODE control setting indications should be
the same as actual control settings. The
GAIN control setting indication should be
between 0 and more than 230.
6. Press the POWER SWITCH to finish. Turn
on the power again to resume operation.
6.7 Test Pattern
The test pattern is used to check color
performance.
1. Turn on the POWER SWITCH while pressing
any key.
2. Press the BRILL key three times. Press the
BRILL key again to change the test pattern
as below.
BLACK
↓
WHITE
↓
BLK RED GRN Blue YEL PPL Aqua WHT
↓
3. Press the BRILL key again to return to the
EXTENSION MODE menu.