Ram Battery Test; Power Battery Test; Lcd Test - Yamaha QY100 Service Manual

Display of Test Results
OK
01: RAM R/W
NG
01: RAM R/W
Test End
Testing ends after the test result is displayed. Press the
[F4] key and the [+1] key, and the program will proceed to
the next test. All the RAM data is preserved.
2.

RAM BATTERY TEST

Initial Display
QY100 TEST MANUAL
MAIN ROM Ver=#.##
SUB CPU Ver=#.##
02:RAM Battery
[ENTER]:Test Start
[-1,+1]:INC,DEC
[F4]:Exit
Test Content
This test measures the RAM backup battery voltage and
checks the measured voltage whether OK or NG.
Measurement point: A/D input terminal of CPU
Judgment criteria: NG when voltage obtained at the above
terminal is 2.90V or less.
Display of Test Result
OK
02: RAM Battery
NG
01: RAM Battery
### Low
NG
01: RAM Battery
### High
###: Voltage is indicated in 10bit conversion.
ex. 950
→ 3.30/1024x950=3.06[V]
Test End
Testing ends after the test result is displayed and output.
OK
NG
OK
NG
NG

3. POWER BATTERY TEST

Initial Display
QY100 TEST MANUAL
MAIN ROM Ver=#.##
SUB CPU Ver=#.##
03:Power Battery
[ENTER]:Test Start
[-1,+1]:INC,DEC
[F4]:Exit
Test Procedure
This test checks that the voltage of the battery can be read
properly.
Measurement point: A/C input terminal of CPU
Measurement condition: AC adapter unconnected, battery
(DC power 8.0 ± 0.3V) mounted
Judgment criteria: NG when voltage obtained at the above
terminal is 1.67V or less or 2.01V or more.
Display of Test Result
OK
03:Power Battery
###
NG
03:Power Battery
### Low
NG
03:Power Battery
### High
###: Voltage is indicated in 10bit conversion.
ex. 650
→ 3.30/1024x650=2.09[V]
Test End
Testing ends after the test result is displayed and output.

4. LCD TEST

Initial Display
QY100 TEST MANUAL
MAIN ROM Ver=#.##
SUB CPU Ver=#.##
04:LCD Check
[ENTER]:Test Start
[-1,+1]:INC,DEC
[F4]:Exit
QY100
OK
NG
NG
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