OPTIMOD
MAINTENANCE
4-9
most frequencies. However, in an emergency it is usually possible to detect many of
the more severe faults that could develop in the 8685 circuitry even in high-RF envi-
ronments.
See the assembly drawings in Section 6 for component locations. Be sure to turn the
power off before removing or installing circuit boards.
Follow these instructions in order without skipping steps.
Note:
To unbalance the analog output, connect pin 1 (ground) to pin 3, and meas-
ure between pin 1 (ground) and pin 2 (hot).
Note:
All analog output measurements are taken with a 620
Ω
±5% resistor tied be-
tween pin 2 and 3 of the XLR connector.
1.
Save your existing System Setup.
To facilitate testing the 8685, we supply several Setups to be recalled as you
work through the testing procedure below. Recalling a Setup will cause you to
lose any unsaved adjustments you have made to the 8685’s setup parameters.
Therefore, to allow you to restore your existing settings later, save them as a Sys-
tem Setup before you start testing the 8685. (See step 4 on page 2-21 and step
10 on page 2-30.)
2.
Test the power supply
A)
If the power supply is entirely dead and the fuse is not blown, verify that the
primary winding of the power transformer is intact by measuring the resis-
tance of the power supply at the IEC AC line connector.
•
For 115-volt operation, the resistance should be approximately 7.6
Ω
.
•
For 230-volt operation, the resistance should be approximately 27
Ω
.
B)
The green LED power indicator on the upper right of the front panel display
monitors the DC power supply outputs. If one or more power supply voltages
are out of tolerance, red flashes will report them according to the table be-
low. If there are multiple values out of tolerance, they are reported one after
another in a continuous loop, with one green flash indicating the beginning
of each count.
Number of Red Flashes
Problem With
1 +
unregulated
supply
2 +15V
or
–15V
3 +5V
or
–5V
4 +5V
Digital
5
Analog
Digital ground connection broken
6
DSP A +3.3V supply
7
DSP B +3.3V supply
8 CPU
+3.3V
supply
Содержание OPTIMOD 8685
Страница 1: ...Operating Manual OPTIMOD 8685 Surround Audio Processor Version 1 0 Software...
Страница 7: ...Operating Manual OPTIMOD 8685 Surround Audio Processor Version 1 0 Software...
Страница 28: ...X XLR connector wiring standard 2 8...
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Страница 120: ...2 66 INSTALLATION ORBAN MODEL 8685 NOTES...
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Страница 293: ...OPTIMOD SURROUND PROCESSOR TECHNICAL DATA 6 37...
Страница 294: ...6 38 TECHNICAL DATA ORBAN MODEL 8685 Base Board Parts Locator Drawing for schematic 62165 000 06...
Страница 299: ...OPTIMOD SURROUND PROCESSOR TECHNICAL DATA 6 43 CPU MODULE Drawing 32200 000 02...
Страница 305: ...OPTIMOD SURROUND PROCESSOR TECHNICAL DATA 6 49 RS232 Board Parts Locator Drawing for schematic 62250 000 02...
Страница 310: ...6 54 TECHNICAL DATA ORBAN MODEL 8685 8585 Digital I O SRC Control Miscellaneous Parts Locator 32330 000 02 1...
Страница 317: ...OPTIMOD SURROUND PROCESSOR TECHNICAL DATA 6 61 DSP BOARD PARTS LOCATOR DIAGRAM FOR SCHEMATIC 62375 000 xx 1...
Страница 327: ...OPTIMOD SURROUND PROCESSOR TECHNICAL DATA 6 71 LCD CARRIER PARTS LOCATOR 32270 000...
Страница 329: ...OPTIMOD SURROUND PROCESSOR TECHNICAL DATA 6 73 ENCODER BOARD PARTS LOCATOR HEADPHONE BOARD PARTS LOCATOR...
Страница 332: ...6 76 TECHNICAL DATA ORBAN MODEL 8685 FRONT PANEL INTERFACE BOARD PARTS LOCATOR DRAWING...
Страница 335: ...OPTIMOD SURROUND PROCESSOR TECHNICAL DATA 6 79 HD SDI I O BOARD Parts Locator Drawing top 32360 000 sheet 1 of 2...
Страница 336: ...6 80 TECHNICAL DATA ORBAN MODEL 8685 HD SDI I O BOARD Parts Locator Drawing bottom 32360 000 sheet 2 of 2...
Страница 354: ...6 98 TECHNICAL DATA ORBAN MODEL 8685 HD SDI RS232 RS485 SDI BOARD PARTS LOCATOR DRAWING 32365 000 sheet 1 of 1...
Страница 357: ...OPTIMOD SURROUND PROCESSOR TECHNICAL DATA 6 101...