Service manual

AO8
20
INSPECTION
1. Range of Applicability
These specifications apply to the AO8 and AO8-DA8.
2. Preparations
2-1. Conditions
For details on the connection method, refer to the Test Program Specifications KES-92653.
Unless otherwise specified, the conditions are as follows.
· Set the INPUT SELECTOR switch to A.
· Set WORD CLOCK IN 75 Ω to ON.
2-2 Loading the Firmware
The firmware used must be the “AI8/AO8 Firmware” (managed with the already drawn CD-R assembly drawing (3JL-XY714A0))
of the PM1D System Software matching the version on the cover sheet. For details on the firmware writing method, refer to the
Test Program Specifications KES-92653.
2-3. Test Program
For details on the starting method etc., refer to the Test Program Specifications KES-92653.
3. Inspection
3-1. Inspection with Test Program
· Inspect based on the Test Program Specifications KES-92653.
3-2. Jitter Measurement
· Connect the LMY-slot inspection jig Canon terminal to DSA1.
· Set Fs to 48 kHz and 44.1 kHz with the test program and measure the jitter at DSA1.
3-3. Fan Operation Check
· Check that the fan rotates while the power is on.
3-4. Sound
· The connections are as in the diagram below.
· Set the AI8 and AO8 sheet UNC DIP switch as below. DIP Switch 8 is not used.
· For 01V, OSC1kHz is output from OMNI1 OUT and the signal input to INPUT is assigned to ST OUT.
· For AO8, insert the inspection LMY4-DA cards in Slot 1-8.
· For AO8-DA8, insert the shipping LMY4-DA cards in Slot 1-8.
Range of tolerance
48 kHz
44.1 kHz
6 nsec max.
5 nsec max.
Connection diagram
68-pin cable
BNC
OUTPUT A
x 8
x 8
INPUT A
INPUT
Function Generator
Power speaker
01V
AO8AI8
LMY4-DA
LMY4-DA
LMY4-AD
LMY4-AD
OMNI OUT
ST OUT
AI8
AO8
OFF
OFF
ON
OFF
OFF
OFF
OFF
ON
ON
OFF
ON
OFF
ON
OFF
DIP SW
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