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Mar, 1998
CHECKING THE SOFTWARE VERSION NUMBER
Holding down MONITOR SEL and SOLO buttons, turn on VS-840.
The version number will appear on the LCD panel.
TEST MODE
In the test mode, the following circuits are checked.
Digital block:
CPU
16M DRAM (for CPU)
8M flash ROM
DSP
4M DRAM (for DSP)
Gate array
A/D , D/A
LED matrix
Switch matrix
Digital out
Timing generator ( PLL block )
Digital volume control
SCSI IF block (VS-840S only)
Analog block:
Input -> Input Sens -> A/D
|
-> Peak LED drive
D/A ->-> Mute ->->-> Output
|
-> Phones select -> Phones VR -> Phones amp -> Phones out
Setting up VS-840 for test
INPUT SENS - 1, 2, 3, 4
: MIN.
PHONES
: MAX.
FADER - 1, 2, 3, 4, 5/6, 7/8, MASTER : MIN.
TRACK CUE - 1, 2, 3, 4, 5/6, 7/8
: MIN.
NOTICE : Insert a Blank ZIP DISK ( P/No. 01343023 ) formatted by VS-
840 into the internal drive before testing.
If it is necessary to check the connection with on external ZIP
Drive ,connect it before the VS-840S is turned on.
Starting the test program
Holding INPUT, EQ and EFFECT LEVEL buttons simultaneously, turn
on VS-840.
The test program will display the test options:
0: Auto Check
1: Memory Check
2: GA Check
3: DSP Check
4: LCD Check
5: SW Check
6: LED Check
7: Encoder Check
8: Fader Check ( incl. Track Cue )
9: MIDI Check
10: SCSI Check ( VS-840S only )
11: Audio Check
Select the desired test option with TIME/VALUE dial (normally, 0: Auto)
and then press REC button.
0: Auto Check
Test program 1: Starts with memory check and will display "OK" for 2
seconds if the test is successful. And then will proceed to the next
test, if possible. The program will display "Error" if a test fails and
then abort the test.
To force the program to proceed to the next test, press REC button.
1: Memory Check
External DRAM (16M) and CPU RAM
The program writes data (0xAA, 0x55) into each memory location
and then reads back the data for verification.
If the test is successful, the program displays "OK" and proceeds to
the test 2.
2: GA Check
The program checks the data transfer line between the gate array
and CPU.
If the test is successful, the program displays "OK" and proceeds to
the test 3.
3: DSP Check
The program checks the DSP internal memory and 4M DRAM.
If the test is successful, the program displays "OK" and proceeds to
the test 4.
4: LCD Check
Verify that all segments are uniformly turned on.
Press PLAY button to start the contrast test.
Verify that entire LCD screen automatically changes from dark to
light and then back to dark.
Press REC button to start the test 5.
5: SW(itch) Check (including foot switch)
Press the button whose name is displayed on the LCD. If the button
is OK, the next button name is displayed. Press the corresponding
button.
Repeat the test until REC button is indicated. The program proceeds
to the test 6.
6: LED Check
Verify that the LEDs are fully turned on at the same intensity.
Press the following buttons and verify state change of the LEDs.
[ZERO] : off
[REW] : solid light in red
[FF] :
solid light in green
[STOP] : solid light in orange
[PLAY] : solid light
The program will proceed to the test 7.
7: Encoder Check
Turn the TIME/VALUE dial clockwise 10 clicks or more.
Turn the dial counterclockwise 10 clicks or more.
The program will display "OK" and proceed to the test 8.
VS-840/840S
7
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