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PSR-280/PSR-282
TEST PROGRAM
A. PREPARATION
1) PA-3B (AC adaptor) is used.
2) The volume is usually moved to the use position when no volume change is required.
3) Measuring instruments: frequency counter, level meter (with JIS-C filter)
Note: Connect a stereo plug to the [PHONES] jack at 33 ohms.
4) Jigs: foot switch, MIDI cable.
B. HOW TO ENTER THE TEST PROGRAM
AUTO MODE
While pressing the C3#, F3 and G3# keys, turn the [STANDBY/ON] switch on.
MANUAL MODE
While pressing the C2#, F2 and G2# keys, turn the [STANDBY/ON] switch on.
C. PROCEEDING THROUGH THE TEST PROGRAM
AUTO MODE
When the test program is started, the test is automatically executed.
When confirmation is necessary, the test program stops operating and waits for the instruction. At this time, press the
[START/STOP] button; the next test is automatically executed.
MANUAL MODE
The LCD will display "TEST" when entering the test program.
To select the program number, use the [-/NO] and [+/YES] buttons.
To execute the test, press the [START/STOP] button.
To proceed to the next test, press the [START/STOP] button.
D. TEST PROGRAM LIST
TEST NO.
LCD (initial)
1
001: Version
2
002: Rom Chk1
3
003: Ram Chk1
4
004: WaveRomChk1
11
011: TG1 Chk
13
013: Pitch Chk
14
014: Output R
15
015: Output L
19
019: Noise
20
020: SW,LED Chk
24
Test Functions and Judgment Criteria
Displays ROM version
ROM (Program, Wave) versions are displayed alternately on the LCD.
Checks the ROM
The test results appear on the LCD.
Checks all the RAMs that are connected to the CPU
The test results appear on the LCD.
Checks the WAVE ROMs that are connected to the CPU
The test results appear on the LCD.
Outputs the sine wave by changing the channels in sequence from C1 to C4
After auto-scaling is finished, individual keys can be played. (If playing two or more keys
simultaneously, the first pressed key has priority to make a sound.)
Connect the frequency counter to the [PHONES] jack.
Sets PAN to Center and produces a signal at 440 +/- 1.76 Hz
Check that the correct signal is produced.
Connect the level meter (with a JIS-C filter) to the [PHONES] jack. (33 ohm load)
Set the [MASTER VOLUME] at maximum and check the output level (1 kHz).
PHONES L:
less than -53.0 dBm
Connect the level meter (with a JIS-C filter) to the [PHONES] jack. (33 ohm load)
Set the [MASTER VOLUME] at maximum and check the output level (1 kHz).
PHONES L:
-6.0 dBm +/- 2 dB
Connect the level meter (with a JIS-C filter) to the [PHONES] jack. (33 ohm load)
Set the [MASTER VOLUME] at maximum. Check D/A converter noise.
PHONES L/R: Less than -78.0 dBm
Check the switches on the panel.
Press the switches that are displayed on the LCD. A pre-assigned note is output when pressing
the switch.
The test results appear on the LCD.
PHONES R:
-6.0 dBm +/- 2 dB
PHONES R:
less than -53.0 dBm
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