Test Program And Initialize; Manual Mode; Auto Mode - Yamaha PORTATONE PSR-540 Service Manual

PSR-540
1. TEST PROGRAM
A. PREPARATION
1) PA-6 (AC adapter) 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: Use a stereo plug to the [PHONES / AUX OUT] jack at 33 ohms.
4) Jigs:
Foot switch, MIDI cable, Floppy Disk(2HD, 2DD)
B. HOW TO ENTER THE TEST PROGRAM

AUTO MODE

While pressing the C3#, F3 and G3# keys, turn the [STAND BY/ON] switch to the "ON" position.

MANUAL MODE

While pressing the C2#, F2 and G2# keys, turn the [STAND BY/ON] switch to the "ON" position.
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 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 [BANK +] and [NEXT -] 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 Displays Rom version
Rom (Program, Wave) versions are displayed alternately on the LCD.
2 002: Rom Chk1 Checks the ROM
The tset results appear on the LCD.
3 003: Ram Chk1 Checks all the RAMs that are connected to the CPU.
The test results appear on the LCD.
4 004: WaveRomChk1 Checks the WAVE ROMs that are connected to the CPU.
The test results appear on the LCD.
7 007: FDD Chk Insert the floppy disks one by one (2DD and 2HD).
Checks the floppy disk drive unit
9 009: Eff1Ram Chk Checks the effect RAM1
11 011: TG1 Chk Outputs the sine wave by changing the channels in sequence from C2 to G4.
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.)
13 013: Pitch Chk Connect the frequency counter to the [PHONE/AUX OUT] jack.
Set PAN to Center and produce a signal at 440 Hz +/- 0.22.
Check that the correct signal is produced.
16
Test functions and Judgement Criteria
14 014: Output R Connect the level meter (with a JIS-C filter) to the [PHONE/AUX OUT] jack. (33
ohm load)
Set the [MASTER VOLUME] at maximum.
Check the output level (1kHz).
Phones L: Less than -60.0 dBm
Phones R: -10 dBm +/- 2 dB
15 015: Output L Connect the level meter (with a JIS-C filter) to the [PHONE/AUX OUT] jack. (33
ohm load)
Set the [MASTER VOLUME] at maximum.
Check the output level (1kHz).
Phones L: -10 dBm +/- 2 dB
Phones R: Less than -60.0 dBm
19 019: D/A Noise Connect the level meter (with a JIS-C filter) to the [PHONE/AUX OUT] jack. (33
ohm load)
Set the [MASTER VOLUME] at maximum.
Phones L/R: Less than -80 dBm
20 020: SW, LED Chk 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.
21 021: ALL LED On Check that the LED on the panel is on.
22 022: Red LED On Check that the red LED on the panel is on.
23 023: Green LED On Check that the green LED on the panel is on.
28 028: All LCD On Check that all LCD dots are on.
29 029: All LCD Off Check that all LCD dots are off. The LCD becomes white
31 031: Pedal1 Chk Connect the foot switch to the [FOOT SWITCH] jack.
Check that the C3 note is output when starting the test program.
Check that the C4 note is output when pressing the pedal and that the tone is
turned off when releasing the pedal.
The test results appear on the LCD.
37 037: Midi Chk After connecting the [MIDI IN] jack and [MIDI OUT] jack with a MIDI cable, ex-
ecute the test.
Check that the C4 note is output and that the test results appear on the LCD.
38 038: To Host Chk For factory test use only
40 040: Battery Chk Checks the voltage of the Battery terminal
41 041: Rom Chk2 Checks the ROM
The test results appear on the LCD.
42 042: Ram Chk2 Checks the RAMs that are connected to the CPU.
The test results appear on the LCD.
43 043: WaveRom Chk2 Checks the WAVE ROMs that are connected to the CPU.
The test results appear on the LCD.
44 044: WaveRam Chk1 Checks all the WAVE RAMs that are connected to the CPU.
The test results appear on the LCD.
46 046: Backup Chk2 Performa the RAM back-up check.
Check that the display reads "NG," then turn off the power switch.
Enter the test program and perform the RAM back-up checks, then check again.
Check that the LCD displays "OK."
Note: Do not turn on the power switch by normal mode while standing by, as
the RAM data will be lost.
47 047: Factry Set All the RAMs are initialized and set to the factory preset date when executing
this test. The results appear on the LCD.
48 048: Test Exit Exit from the test program after executing this test.