Inspections - Yamaha O2R96 Service Manual

02R96

INSPECTIONS

Perform the Check of 02R96.
1. Preparation
1-1. Condition
Conditioned as follows unless specified:
WORD CLOCK to be INT 96kHz.
Only CH to be checked shall be turned ON.
PAN: Center
GAIN: MIN
PAD: ON
INSERT: OFF
FADER: NOMINAL (0dB)
0dBu = 0.775Vrms
0dBV = 1Vrms = 2.2dBu
0dBFS = 0 decibel full scale
Output impedance of oscillator shall be 150Ω.
Input impedance of oscilloscope, level gauge shall
be over 100kΩ.
Noize measuring shall be at 12.7kHz, and be
corrected with LPF of –6dB/OCT.
(Not average value but effective value should be
measured.)
Measurement should be performed at 80kHz and
corrected with LPF of –6dB/OCT.
When checking analogue output, the following
conditions shall be added or changed:
When measuring maximum output, unless
specified, output 0dB from the built-in oscillator.
The load of analogue output shall be as follows:
INSERTOUT:
STEREO OUT (XLR):
STEREO OUT (PIN):
CONTROL ROOM MONITOR OUT:
STUDIO MONITOR OUT:
OMNI OUT:
PHONES:
1-2. Selected DSP7 Inspections
The latest version of the selected DSP7 program
must be installed beforehand.
(Refer to "1-4. Program writing wProcedure of
version up" for details on installation procedures.)
q
Check to ascertain that it is possible to perform
the initialization procedure in accordance with the
instructions in "1-3. Initialization".
w
Press channels 1, 9, 9 and 7 in that order with the
channel [SEL] key, and then press the [ENTER]
key.
134
e
The LCD screen will change as shown below, and
the selected DSP7 program will start up.
****H**M [Elapsed Time]
[DSP7 Number] [Error Count] [First Time] [Latest Time]
0
#
1
#
2
3
4
#
5
6
#
7
8
#
r
The LCD screen will be determined in accordance
with the following standards after the power has
been left on for one hour.
a. No error → Proceed to page 1-3.
b. Error → Replace the DSP7 in which the error
DSP sheet and location support is shown below.
DSP7 Number
ICB1 ICB2 ICB3 ICB4 ICB5 ICB6 ICB7 ICB8 ICB9
Location
1-3. Initialization
Press down simultaneously on the AUX SELECT
[DISPLAY] key and the [AUX1] key and then switch
on the power to start up the system. Check to
10kΩ
ascertain that the DIO WORD CLOCK SELECT
600Ω
screen is displayed. Important data should be
10kΩ
backed up by MIDI dump. (See page 176.)
10kΩ
10kΩ
1-4. Main program writing
10kΩ
If the program version is not latest, program of the
8Ω
latest version must be installed.
q
How to check the program version.
Turning ON the power while pressing the [UTILITY]
key will display the version number.
w
Procedure of version up
a. Prepare the application to be used for writing
data into the computer, and the data file that is
to be loaded.
b. Connect the personal computer to the 02R96
with a USB cable, and disconnect all other
cables.
c. Switch on the power to the 02R96 while pressing
down on the [REC] button. (The communication
standby screen will be displayed.)
****H**M ****H**M
****H**M ****H**M
****H**M ****H**M
****H**M ****H**M
****H**M ****H**M
occurred, and then run the inspection
again.
0 1 2 3 4 5
Supplementary information)
, and [ ] will not be
displayed.
[Error Count], [First Time]
and [Latest Time] will not
be displayed if no errors exist.
6 7 8