Icom IC-RSOOCOL Instruction Manual page 66

11 MAINTENANCE
11-6 CPU RESETTING
(1) LOGIC CHECK SCREEN
[POWER]
[SPEECH]
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(LOGIC CHECK)
RAM MAIN
U-RAM
SUB CONTROL
SUB DATA
SUB INTERRUPT
Mch No,
DATA Passed
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LOGIC CHECK SCREEN
(2) DIRECT CPU RESETTING
[POWER]
[CLEAR]
The LCD monitor may occasionally display erroneous
information (e.g., when first applying power). This may be
caused externally by static electricity or other factors.
If this problem should occur, turn OFF power. Wait a few
seconds and turn ON again. If the problem contunues,
check the internal CPU and RAM IC chips using the logic
check screen.
The logic check screen tests a main CPU, sub CPU and
RAM IC chips for correct functioning.
1) Turn OFF the [POWER] switch.
2) Push and hold the [SPEECH] switch then turn the
[POWER] switch ON. Then release the [SPEECH] switch.
The logic check screen appears approx, 10 sec. after
power is ON.
3) When the screen shows ''Passed" to all check point, push
(F-6] "MENU."
The menu 1 screen is displayed.
4) If another comment is displayed on the screen, push
[F-1] "RESET."
The receiver checks the following items on the logic check
screen:
RAM MA\
128 k bytes V-RAM for LCDC.
SUB Control line between MAIN CPU and
CONTROL SUB CPU.
Data transferring between MAIN CPU
and SUB CPU,
SUB DATA
SUB
INTERRUPT
DATA
Interrupt data line to SUB CPU.
Indicating memory channel number.
The decimal and width of all memory
channels.
The internal CPU can be reset without displaying the logic
check screen. Use direct CPU resetting when you wish to
erase all memory channels.
1) Turn [POWER] OFF.
2) Push and hold the [CLEAR] switch then turn [POWER]
ON.
3) The CPU isynow reset and the menu 1 screen is displayed.