Yamaha portatone psr 1100 Service Manual page 43

No. LCD (initial)
42 042: MIC Check
(PSR-2100 only)
43 043: ROM Check2
44 044: RAM Check2
45 045: Flash Check2
46 046: Wave ROM Check2
47 047: Wave RAM Check2
55 055: Factory Set
56 056: Test Exit
Note: 0 dBm=0.775 V
Time is required to complete the checks performed by test No. 45 and 46.
• Power On Reset
All the RAMs are initialized and set to the factory preset data when the [STANDBY/ON] switch is turned on while pressing the highest
(rightmost) white key on the keyboard.
Test Function and Judgment criteria
Connect a microphone to the [MIC./LINE IN] jack and speak to it.
Set the [MIC./LINE] select switch to [MIC.] and set the [INPUT VOLUME] at maximum.
Check the voice sound by hearing that there is not unusual noise or abnormal sound.
Checks the ROMs that are connected to the CPU bus.
Check the LCD "ROM Check2 OK"
Checks the RAMs that are connected to the CPU bus.
Check the LCD "RAM Check2 OK"
Checks the Flash Memories that are connected to the CPU bus.
Check the LCD "Flash Check2 OK"
Checks the ROMs that are connected to the TG bus.
Check the LCD "XG Wave ROM Check OK"
Checks the RAMs that are connected to the TG bus.
Check the LCD "XG Wave RAM Check OK"
All the RAMs are initialized and set to the factory preset data when executing this test.
Exit from the test program after executing this test.
PSR-1100/PSR-2100
43