Audio System Adjustment; Ee-Output Level Check - Sony CCD-TRV32 Service Manual

6-4. AUDIO SYSTEM ADJUSTMENT

• The right channel (STEREO) adjustment is performed in
STEREO MODEL only.
• Use the alignment tape for audio system adjustment.
• Connect an audio input signal from VC-188 board CN501 as
shown in Fig.6-4-1.
Audio
transmitter
Pin4
Attenuater
600Ω
Pin2
Pin3
4-1.

EE-OUTPUT LEVEL CHECK

Mode Record
CN501 pin 4 INPUT (Left)
signal
CN501 pin 2 INPUT (Right)
400 Hz, –38 dBs
Audio input from CN501 pin 4, 2
Measurement Point AUDIO output terminal (Left/Right)
(no load)
Measuring Instrument Audio level meter
–7.5 ± 2.0dBs
Specification Value
Check procedure:
Order
1 Check that 400 Hz signal level satisfies the
specification.
VIDEO CAMERA
Audio level meter or
RECODER
distortion meter
CN501
L
L
R
R
AUDIO output
terminal
VC-188 board
Procedure
Alignment tape
〈MONO model〉
〈STEREO〉
When connecting AFM DEV jig
Stabilized power supply
(+7Vdc to +9Vdc)
+
–
47kΩ
Oscilloscope
CH1
CH2
Fig. 6-4-1
Red
White
TP3(L OUT)A
White
Red
A : 1.5MHz deviation adjustment
B : 1.7MHz deviation adjustment
6-76
WR5-5CSP : PAL
WR5-5NSP : NTSC
WR5-9CS : PAL
WR5-9NS : NTSC
A B
TP27
INV SIN
(GND)
S3
T28(DC)
TP33(GND)
TP32(R OUT 1)B
TP31(L OUT 1)A
TP30(R OUT 2)
TP29(L OUT 2)
J1(R)
J2(L)
J3
TP1(GND)
TP2(R OUT)B
4 6 7
CN2 CN1
VC-188 BOARD
AUDIO L
terminal
2
AUDIO R 3 CN102
8
terminal
AFM DEV jig
(J-6082-312-A)
S2
PAL
NT
ST
S1
BIL
CN2
4 RF SWP
6 REC RF
7 RF GND
CN102
2 REC 2
3 GND
8 RF SWP