JRC JMA-993-SA Instruction Manual page 290

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Radar Failure Check List
When placing an order for repair of the product, it is requested that you could confirm the check items
and fill the results and sent the sheet to our contact.
lf there is any unclear items, contact the ship on which the product is installed, and give the correct
information on the product.
Ship name:
Phone:
Fax:
Radar general model name: JMA- Serial No. :
(Write the full model name correctly)
Check the following items in the order of the number, and circle the applicable answer between
YES or NO. lf the item cannot be determined as YES or NO, explain in detail in the item (18),
others.
lf any of the items (1) to (5) if marked as NO, check the fuse of the product (refer to Section 8.2
and 8.3).
Check the items (4) to (17) while the transmission (TX) in ON.
*Function mentioned in the items (14), (15) and (17) may be optional, answer is not necessary.
(18) Others (Enor messaqe. etc.)
( 1 )
Q )
( 3 )
No.
Check ltem
Result
( 1 ) Power can be turn on. (The lamp on the operation panel is lit)
YES
NO
Q )
A few minutes after powering-on, it will become standby status. YES N O
( 3 ) When powering-on (or TX ON), the LCD displays something (LCD is lit).
YES
NO
(4)
The scanner rotates at the transmission (TX) ON.
(Check the following items while transmission is ON)
YES
N O
(5) Current is supplied to the rnagnetron. (Refer to the instruction manual) YES N O
\o/
Tuning is enabled. (Check with the range of 6 NM or more)
YES
N O
( 7 \
Fixed marker is displayed.
YES N O
(8) VRM is displayed.
YES N O
(e)
While noise is displayed while set at SEA and RAIN minimum,
GAIN maximum, IR-OFF and range 48 NM.
YES
NO
( 1 0 )
Target reflection echo is displayed. YES NO
( 1 1 )
Sensitivity of reflection echo is normal.
YES NO
( 2 )
EBL is displayed.
YES N O
( 1 3 )
Cursor mark moves.
YES NO
. (14) GYRO couise can be set and normally displayed.
YES N O
. ( 1 5 ) LOG speed can be normally displayed.
YES
NO
( 1 6 ) ARPA works normally.
YES N O
* ( 7 )
lf equipped with an InterSwitch, when switching from the straight mode (l l) to
(x), the failures (items marked NO) in the above (1) to (16), are switched over lo
the other unit.
YES N O
9-2