Alignment Point - Panasonic RM-1100 Service Manual

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• FM RF ALIGNMENT
• FM STEREO ALIGNMENT
----_
......
'-'-
nl
B;5
~
PILOT
76 kHz
VR2
eI
DC BALANCE
FM 2nd
IO.7MHz
---.
T3
o
Azimuth
Screw
o
Fig. 20
CJ
AM ANT
550kHz
L304
• ALIGNMENT POINT
·Please refer to Circ·uit Board for test points locaton.
FM SIGNAL GENERATOR FREQUENCY DC
BAND DISPLAY VOLTMETER ADJUSTMENT REMARKS
.. _ CONNECTIONS
FREQUENCY SETTING
Disconnect No signal 87.5 MHz
V·.·(+)
L5 Adjust for 1.2±0.05 V
applied V··(-) (FMOSCCoil) readig on DC voltmeter.
FM Disconnect
No signal
108 MHz V ...(+) CT3 Adjust for 8±0.1 V
applied
V···(-)
(FM OSC Trimmer) reading on DC voltmeter.
Repeat steps (1) and (2).
FM SIGNAL GENERATOR FREQUENCY AC
BAND DISPLAY VOLTMETER ADJUSTMENT REMARKS
CONNECTIONS FREQUENCY SETTING
Antenna socket 89 MHz
. . .(+)
L1 (FM ANT Coil) Adjust for maximum
(FMRFDummy (400 Hz 30%) 89 MHz
V ..(-)
L4 (FM ANT Coil) reading on AC voltmeter
Fig. 19)
FM " 107 MHz 107 MHz
T .. (+)
CT1 (FMANT
"
Trimmer)
-
(400 Hz 30%)
v··(-) CT2 (FM ANT
Timmer)
Repeat steps 4 and 5.
FM SIGNAL GENERATOR FREQUENCY DC
BAND DISPLAY VOLTMETER ADJUSTMENT REMARKS
CONNECTIONS FREQUENCY SETTING (center "0")
Antenna scoket 89 MHz
V· ..
·(+)
T3 Adjust T3 for -0.05~0.05 V
FM (400Hz, 30% 89 MHz
V .. ··(-)
(FM 1FT) reading on DC voltmeter.
Mod. 60 dB)
.
Notes: 1. Stereo modulator ................ -Connect stereo modulator output to EXT MOD terminal of signal generator.
-Pilot signal modulation to "10%".
2. FM signal generator . . . . . . . . . . . . - Frequency approximately 100 MHz/Output level to
"60~
70 dB", 1
~3
mY.
-Modulation mode to "FM".
CIRCUIT SIGNAL FREQUENCY AC ADJUSTMENT REMARKS
GENRATOR
COUNTER VOLTMETER
High side thru.
PILOT 89 MHz 100 kO to test
- -
VR2 Adjust for 76.00 kHz±50 Hz readign on
(0% Mod. 80 dB)
point
V
Negative
I
(Pilot) frequency counter.
sidetoV
89 MHz Make adjustment so that when the antenna
SEPARATION
(400 Hz. 30% Mod.
f. .
L Ch
(+) VR1 input is sUbjected to L modUlation (or R
... Rch (+)
80 dB)
... (-)
(Separation) modulation.) R channel output (or L
channel output) becomes minimum.
• AZIMUTH ALIGNMENT
TAPE AC AC ADJUSTMENT REMARKS
VOLTMETERG) VOLTMETER@
Playback the azimuth tape. Across headset Across headset V··Lch (+) Adjust for same reading on AC
V .. Rch (+)
voltmeterCD and @.
v··(-)
(6)
L - _ - - - L _
• DC BALANCE NB ALIGNMENT
(2)
(1)
(3)
(5)
(4)
II1ARKS
.2±0.05V
Cvoltmeter
.8±0.1
v
DC voltmeter
II1ARKS
laximum
~r
"
JlARKS
laximum
~
rmaximum
mon
ope.
'ig. 16)
laximum
laximum
'ig. 17)
Fig. 21
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