Inspection - Yamaha AO8 Service Manual

AO8

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 with a version later than the version shown on the cover.
method, refer to theTest Program Specifications KES-92652.
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.
48 kHz 48 kHz 48 kHz 48 kHz
44.1 kHz 44.1 kHz 44.1 kHz 44.1 kHz
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.
AI8 AI8 AI8 AI8 OFF OFF OFF OFF
AO8 AO8 AO8 AO8 OFF OFF OFF OFF
· 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.
20
Range of tolerance Range of tolerance Range of tolerance Range of tolerance
6 nsec max. 6 nsec max. 6 nsec max. 6 nsec max.
5 nsec max. 5 nsec max. 5 nsec max. 5 nsec max.
Connection diagram Connection diagram Connection diagram Connection diagram Connection diagram Connection diagram Connection diagram Connection diagram
AI8 AI8 AI8 AI8 AI8 AI8 AI8 AI8
LMY4-AD LMY4-AD LMY4-AD LMY4-AD LMY4-AD LMY4-AD LMY4-AD LMY4-AD
OUTPUT A OUTPUT A OUTPUT A OUTPUT A OUTPUT A OUTPUT A OUTPUT A OUTPUT A
x 8 x 8 x 8 x 8 x 8 x 8 x 8 x 8
BNC BNC BNC BNC BNC BNC BNC BNC
LMY4-AD LMY4-AD LMY4-AD LMY4-AD LMY4-AD LMY4-AD LMY4-AD LMY4-AD
Function Generator Function Generator Function Generator Function Generator Function Generator Function Generator Function Generator Function Generator
OMNI OUT OMNI OUT OMNI OUT OMNI OUT OMNI OUT OMNI OUT OMNI OUT OMNI OUT
1 1 1 1 2 2 2 2 3 3 3 3
ON ON ON ON OFF OFF OFF OFF
OFF OFF OFF OFF OFF OFF OFF OFF
AO8 AO8 AO8 AO8 AO8 AO8 AO8 AO8
68-pin cable 68-pin cable 68-pin cable 68-pin cable 68-pin cable 68-pin cable 68-pin cable 68-pin cable
INPUT A INPUT A INPUT A INPUT A INPUT A INPUT A INPUT A INPUT A
INPUT INPUT INPUT INPUT INPUT INPUT INPUT INPUT
01V 01V 01V 01V 01V 01V 01V 01V
ST OUT ST OUT ST OUT ST OUT ST OUT ST OUT ST OUT ST OUT
DIP SW DIP SW DIP SW DIP SW
4 4 4 4 5 5 5 5 6 6 6 6
OFF OFF OFF OFF ON ON ON ON ON ON ON ON
ON ON ON ON OFF OFF OFF OFF OFF OFF OFF OFF
For details on the firmware writing
LMY4-DA LMY4-DA LMY4-DA LMY4-DA LMY4-DA LMY4-DA LMY4-DA LMY4-DA
x 8 x 8 x 8 x 8 x 8 x 8 x 8 x 8
LMY4-DA LMY4-DA LMY4-DA LMY4-DA LMY4-DA LMY4-DA LMY4-DA LMY4-DA
Power speaker Power speaker Power speaker Power speaker Power speaker Power speaker Power speaker Power speaker
7 7 7 7
ON ON ON ON
OFF OFF OFF OFF