Imoortant
e
Customers may complain that their ASR will not read some of their disks.
Please be aware that High
Density
(I-ID)
disks that have been formatted as Double Density (DD) on a DD drive in a unit such as an EPS,
EPS-16 PLUS, or a Macintosh Plus will not be recognized in machines that have an HD drive. This would
include the ASR, as well as an IBM PC or clone. Disks that have been pre-formatted for MS DOS are not
always reliable and should not be used.
e
On early units, removing the disk drive causes the disk drive bezel to break.
The Sony 420-l disk drive has a jumper block. The correct jumper settings are shown in figure 4.
Figure 4
-
Correct Sony 420-l jumper settings
CF In keyboard units, some plastic on both the wheel cover and end cap has to be removed. Replacement
disk drives now come with a template and instructions for cutting the plastic on the wheel cover for older
units. See the information included with the new drive.
UNIT SOUNDS DISTORTED
l
If the Peak LEDs on the Input Level are always on, this usually indicates a blown fuse.
l
Setting the loop end point before the loop start point can cause the unit to make funny sounds. To check
this, select the sound that this is occurring on, then select the wavesample: press Edit, underline WS, and
play a key that plays the offending sound so that the display shows a number (rather than ALL). If no
number will show up, underline layer and choose a new layer, then try again. Press Wave, press right
arrow repeatedly until the display shows LOOP START. Note the percentage number in the parenthesis.
Press right arrow again until the display shows LOOP END and note the number in the parenthesis for
loop end. The loop end number must be larger than the loop start number. No factory sounds are shipped
this way, so this is most likely to occur on sounds that the customer has created or modified.
l
Make sure that the cable for each jack board is connected properly.
l
ESP download failures will show up as either a “SYSTEM ERROR xxx” or as the outputs playing “dry”
without any effects, with garbled effects, or with no sound at all. If sounds set to DRY sound fine, but
sounds with effects don’t, replace the digital board.
l KEYBOARD ONLY: If there is distortion on the tail of every sound, and the serial number of the unit is
between 10970 and 11700, replace the analog board.
l
If a sample that the customer recorded into the ASR sounds distorted or there is a click in the beginning
and/or end of the sound, check the A/D chip on the Analog board:
a)
Make sure that NOTHlNG is plugged into either of the ASR Audio Input jacks.
b)
Keyboard only: Make sure that the MIC/LINE switch is in the LINE (down) position.
C
)
Make sure that the Input Level pot is turned fully down (counterclockwise when facing the back of
the ASR).
d) Press Command, then Env 1.
4
ASR Service Manual
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