Audio System Alignment; Audio A/D Error Adjustment - Sony HDCAM HDW-F900R Maintenance Manual

10-2. Audio System Alignment

The audio system adjustment is performed in the factory at
the time of shipment, and the adjustment values are saved
in the EEPROM (IC819) on the FP-152 board.
When replacing the EEPROM (IC819) or the FP-152
board, perform the audio system adjustment.
Also, when replacing the volume control RV2 or RV3 on
the FP-152 board, perform "AUDIO LEVEL Volume
Control (Inside Panel) Adjustment".
In Audio System Alignment, adjustments are performed
using the SERVICE menu.
S12 O VTR MAINTE
C0: SERVO
C1: RF
C2: AUDIO
A0: SERVO
A1: RF
→
A2: AUDIO
A4:MECHANISM
A9: OTHERS
AUDIO ADJUST MODE
A20:AUDIO A/D ADJ
A21:AUDIO D/A ADJ
→
A22:AUDIO SIDE VOL ADJ

10-2-1. Audio A/D Error Adjustment

Equipment/Tools
. Generator
Adjustment Procedure
1. Set the AUDIO SELECT switch (CH1, CH2) to "AUTO".
2. Input a +4dBu, 1kHz sine wave to the AUDIO IN
CH1 connector and CH2 connector at the rear.
3. Perform AUDIO A/D ADJUST from the VTR MAIN-
TENANCE page in the SERVICE menu.
AUDIO ADJUST MODE
A20:AUDIO A/D ADJ
ADJUST START
→
YES
SET BOTH OF THE LINE/
AES/EBU/MIC SWITCHES
TO "LINE".
INPUT THE SINE WAVE OF
+4dBU OF 1KHZ TO THE AU
CH1&CH2 XLR ON THE REAR
10-2
TOP
CHECK
CHECK
CHECK
ADJUST
ADJUST
ADJUST
ADJUST
ADJUST
NO
4. Turn the MENU knob to select "YES", and press the
MENU knob.
The auto adjustment starts. The following screen is
displayed during the auto adjustment.
Screen during the CH1 adjustment
AUDIO ADJUST MODE
A20:AUDIO A/D ADJUST
CH1:ADJUSTING
CH2:
CH3:
CH4:
Screen during the CH2 adjustment after the CH1 adjustment
AUDIO ADJUST MODE
A20:AUDIO A/D ADJUST
CH1:COMPLETE
CH2:ADJUSTING
CH3:
CH4:
Screen when the adjustments for both CHs are complete
AUDIO ADJUST MODE
A20:AUDIO A/D ADJUST
CH1:COMPLETE
CH2:COMPLETE
CH3:COMPLETE
CH4:COMPLETE
5. When the adjustment is complete, press down the
MENU ESCAPE switch.
m
. If "TIME OVER ERR" appears in the adjustment screen,
check the input signal etc and perform the adjustment
again.
. If "INPUT OVER ERR" appears in the adjustment
screen, check the signal level since the level of the signal
being input may be too large.
. If "INPUT UNDER ERR" appears in the adjustment
screen, check the signal level since the level of the signal
being input may be too small.
. If "NO INPUT ERR" appears in the adjustment screen,
check the input signal since the signal may not be input
correctly.
HDW-F900R/V1 (E)