64
TEST PROCEDURES
DSP, LCD and LED Tests
The functional tests will be performed by first putting the unit under test into one of two test
modes. This puts the unit into a predetermined state so that the outputs can be predicted.
The below items will be verified during the following tests:
• 6 Audio Inputs
• 3 Audio Outputs
• Volume Control
• LED On/Off
• LCD Display
• LCD Key Operation
• Knob Control
• I/O Signal Detecting
Test mode
Before powering on the unit, press and hold the LEFT and SELECT keys. Turn on the AC
power at the ON/OFF switch located on the rear panel. After about 2.5 seconds, the Pre/Clip
LED’s and LCD display will blink four times and the output relays will switch on/off four times.
At this time the unit will be in test mode. You can now release the LEFT and SELECT keys.
2. LCD Display Tests
2.1 LCD Display Line 1 Tests. Place the unit into Test Mode using the instructions above.
Perform the keypresses listed below and verify that you get the correct information on the
display. Refer to the table below.
Display on Line 1, LCD (2 lines x16 characters)
1: U — Up key pressed No display — Up key not pressed
2: D — Down key pressed No display — Down key not pressed
3: L — Left key pressed No display — Left key not pressed
4: R — Right key pressed No display — Right key not pressed
5: S — Select key pressed No display — Select key not pressed
6: P — PTT Triggered No display — PTT not Triggered
7: D – Direct - In Triggered No display — Direct - In not Triggered
8: 1 — Xfmr Input1 Triggered No display — Xfmr Input1 not Triggered
9: 2 — Xfmr Input2 Triggered No display — Xfmr Input2 not Triggered
10: D — DC Power Supplied A — AC Power Supplied
11: No display
12: No display
13: No display
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
1
U D L R S P D 1 2 D
1~6,
In
Gain,
Right
Key
1~4,
Out En ,
Sel Key
1~6,
Input
Sel,
Up
Key
2
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