Panasonic RF-800UGA / RF-800UGS Service Manual ▷ View online
21
7 Measurements and Adjustments (Tuner)
7.1.
FM IF Alignment
7.1.1.
Setting up for FM IF Alignment
ALIGNMENT: MGS - WS42 - 01
INSTRUMENT: IF SWEEMAR SCOPE
SIGNAL INJETION I/P: TP 4 (SIGNAL), TP 6 (GND)
INSTRUMENT: IF SWEEMAR SCOPE
SIGNAL INJETION I/P: TP 4 (SIGNAL), TP 6 (GND)
JIG O/P TEST: TP 3 (SIGNAL), TP 5 (GND)
7.1.2.
Alignment Part
EXPECTED RESULT
A Well 'S' Curve should be like the picture as shown below
A Well 'S' Curve should be like the picture as shown below
READ CAREFULLY BEFORE ATTEMPTING ALIGNMENT
1. Set selector switch to FM, MW, SW1 or SW2.
2. Set volume level to maximum.
3. Output of signal.
2. Set volume level to maximum.
3. Output of signal.
'S' CURVE
PART LOCATION
T1
PART NUMBER
RLI4B153-C
22
7.2.
RF Alignment
7.2.1.
Setting up for RF Alignment
7.2.2.
Method of signal injection and O/P test point
Note : SW2 injection point
ALIGNMENT STANDARD : MGS - WS41 - 03, 04, 05 (For AM)
: MGS - WS42 - 02, 03 (For FM)
INSTRUMENT
: AM AND FM SWEEMAR SCOPE
BAND
FM
MW, SW1
SW2
SIGNAL INPUT
DIRECT
RADIATED
DERECT
INJECTION DUMMY LOAD
50
Ω UNBALANCED DUMMY ANT
1 TURN LOOP ANT
10 pF DUMMY ANT
JIG l/P TEST POINT
TP1 (SIG), TP2 (GND)
-
TP10 (SIG), TP2
JIG O/P TEST POINT
TP4 (SIG), TP5 (GND)
TP3, TP5 (GND)
TP3, TP5 (GND)
23
7.2.3.
Alignment frequencies
Note : ~ Follow the sequence of alignment : MW
→ SW1 → SW2 → FM.
BAND
OSC BLOCK LOCATION (RANGE ALIGNMENT)
ANT BLOCK LOCATION (SENS ALIGNMENT)
FM
FREQUENCY
(GA).....86,2 MHz
(GS).....87,40 MHz
(GS).....87,40 MHz
(GA).....109,2 MHz
(GS).....108,30 MHz
(GS).....108,30 MHz
106 MHz
CR-NO
L11
CT1 - 4
CT1-3
MW
FREQUENCY
(GA).....511 KHz
(GS).....520 KHz
(GS).....520 KHz
(GA).....1650 KHz
(GS).....1640 KHz
(GS).....1640 KHz
550 KHz
1500 KHz
CR-NO
L12
CT1-2
L3
CT1 - 1
SW1
FREQUENCY
2.249 MHz
7.230 MHz
2.3 MHz
7.0 MHz
CR-NO
L13
CT11
L3
CT1
SW2
FREQUENCY
6.84 MHz
22.80 MHz
7.0 MHz
22.0 MHz
CR-NO
L14
CT12
L7
CT2
24
Click on the first or last page to see other RF-800UGA / RF-800UGS service manuals if exist.