Panasonic Quasar Omnivision PV-M1326 Service Manual page 35

1. Connect the RF OUTPUT of the MTS/SAP Signal
Generator to the Antenna Input Terminal.
2. Connect the Oscilloscope to TP4901(R CH).
3. Adjust R4901 on the TV Stereo Amp C.B.A. so that the
signal level is at minimum as shown in Fig. E5-1.
Minimum
TP4901(R CH)
10mV
Fig. E5-1
Model : L
TP ADJ. MODE
TP4702 R9001 STOP (ANTENNA INPUT TERMINAL)
MTS (ONLY L CH)
300Hz±5Hz
14% or 7% Modulating
TAPE M.EQ.
OSCILLOSCOPE
MTS/SAP SIGNAL
GENERATOR
Note :
TP4702 : TV Stereo C.B.A.
R9001 : VCR Main C.B.A.
1. Connect the RF OUTPUT of the MTS/SAP Signal
Generator to the Antenna Input Terminal.
2. Connect the Oscilloscope to TP4702(R CH).
3. Adjust R9001 on the VCR Main C.B.A. so that the signal
level is at minimum as shown in Fig. E5-2.
Minimum
TP4702(R CH)
10mV
Fig. E5-2
Purpose:
Symptom of Misadjustment:
1ms
INPUT
Note:
(SETUP)
SPEC.
Refer to Descriptions
below
1ms
2-32
TV Y/C PROCESS, TV MAIN & CRT
SECTION
1. SUB CONTRAST ADJUSTMENT
To set the optimum Sub Contrast Level.
The picture is too dark or too light.
TP ADJ. MODE
TP48 R5325 STOP
TAPE M.EQ.
OSCILLOSCOPE
NTSC VIDEO
PATTERN
GENERATOR
TP48 : CRT C.B.A.
R5325 : TV Y/C Process Section on the VCR Main
C.B.A.
1. Reset the control levels to the factory -set levels using
the remote control.
2. Turn R5907 (SUB BRIGHTNESS) fully counterclockwise
for minimum level.
A
TP48
1V
Fig. E6
INPUT
(VIDEO IN)
CROSSHATCH
PATTERN SIGNAL
1Vp-p (75Ω terminate)
SPEC.
A=3.0 ± 0.1Vp-p
20µs