Panasonic OmniVision PV-M1326, Service Manual, Page: 35 / 173

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