Measurements And Adjustments - Panasonic RQ-SX77V Service Manual

I/O
Pin Terminal
No. Name
75 C1 - LCD power booster control
76 C2 - LCD power booster control
77 - LCD power booster control
V
EE
78 C3 - LCD power booster control
79 C4 - LCD power booster control
80 VLCD - LCD power booster control

13. Measurements and Adjustments

13.1. Preparation for Adjustment
Follow step1 to step 6 in item on "Checking for the main P.C.B. (A side)" for Operation Checks
and Component Replacement Procedures.
Connect lead wire for test points TP101 and TP102. / Refer to
13.1.1. Measurement Condition
1. Set volume control to maximum.
2. Set Dolby NR switch to OFF.
3. Release the head state.
4. Set power source voltage to 1.3 V±0.5V DC.
13.1.2. Control Positions and Equipment Used
1. Signal generator (AM/FM)
2. Oscilloscope
3. Frequency counter
4. Test tape (QZZCWAT)
13.2. Tuner section
13.2.1. AM RF Adjustment
1. Fashion a loop of several turns of wire and radiate a signal into
Function
Fig. 13-1
Fig. 13-1.