Teac D-70, Руководство по обслуживанию

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2-2 Audio System
Setting
CLOCK MODE: PLL
AES3 INPUT: SINGLE
DIGITAL FILTER: FIR
DIGITAL IN: Fs=44.1kHz, FullBit
●
If you intend to use a digital output of the P-70 or others for
connection to the digital input, use a digital signal that is not
upconverted.
2-2-1 DC Offset Adjustment
1. Set the OUTPUT SELECT switch on the rear panel to "XLR".
2. Apply a digital signal to the DIGITAL IN and check to see that
the input indicator turns on and that a sampling frequency
shows in the display. (Check of the lock status.)
3. Turn the OUTPUT LEVEL control counterclockwise, so that the
output level is –
∞
(as shown by "
___._
" in the display).
4. Measure the DC offset voltage between pins 2 (+) and 3 (–) of
LINE OUT (XLR). Adjust VR303 (L) and VR403 (R) on ANALOG
PCB for
±
5mV.
− 3 −
VR403 VR303
ANALOG PCB
XLRピン番号
2 ADJUSTMENTS AND CHECKS
2-1 Test Mode
2-1-1 Getting into Test Mode
While holding down the INPUT SELECTOR
＜
and
＞
buttons,
power on the unit and hit the DIGITAL FILTER button repeatedly.
2-1-2 Version Display
When the test mode is activated, the microcomputer version
information, "
uComVer X.XX ", is displayed. Then, at each
press of the INPUT SELECTOR
＞
button, the RDOT version
information, "
R D O T v e r X X X X
", and the RAM version
information, "
RAMversionXX
", are displayed in sequence.
2-1-3 FL Grid Check
After displaying a series of version information, pressing the
INPUT SELECTOR
＞
button activates the grid check mode and
the display reads "
GridChecking
". Turn the OUTPUT LEVEL
control to check to see that the grids turn off one after another.
Continue to turn the OUTPUT LEVEL control to check to see that
the grids turn on one after another.
2-1-4 FL Segment Check
When the FL grid check is done with, press the INPUT SELECTOR
＞
button to activate the segment check mode. Turn the OUTPUT
LEVEL control to check to see that the dot matrix turns on by dot.
2-1-5 LED Check
When the FL segment check is done with, press the INPUT
SELECTOR
＞
button to activate the LED check mode. The display
reads "
LEDCHECK RDT
". Turn the OUTPUT LEVEL control to
check to see that each LED turns on.
2-1-6 Resetting EEPROM
When the LED check is done with, press the INPUT SELECTOR
＞
button and "
! EEPRESET !
" is displayed. Press the DIGITAL
FILTER button and the display changes to read "
EEPSAVE
OK
" and the ROM is reset.
XLR pin assignments