Sansui CP 5 Service Manual

Page 2

3. ADJUSTMENTS

w 3-1. Reference Frequency Adjustment of Synthesizer Control Circuit

Note: 1. Selector Switch .............. .- ...... . TUNER
2. Band Selector Switch . ................. MW
3. See Fig. 3-7 on page 6 for MEASURE OUTPUT point.
STEP SETTING MEASURE OUTPUT ADJUST ADJUST FOR REMARKS .-
1. Memorize 1450 kHz Point® (Pin 91 of F-3693) rrc1 (F3588) 1450.0 kHz 93, «:50

using Memory key 1 Frequency Counter .m

3-2. FM Adjustment

Fig. 3-1
STEREO Sfl
DUY SCOPE
m sea um um um.
o--c .0:xe c oi mm: or a O
m" M .m urnur 0W mpg. WV: 2:: _°
AUDIO 05¢ WM

i 3
(1) FM lF Adiustment
Note: 1. Selector Switch . . . .............. . . . . . TUNER
2. Band Selector Switch .................. FM
3. FM MODE Switch .................... MONO
4. See Fig. 3-5 on page 6 for MEASURE OUTPUT and AD}UST point.
@ FEED SIGNAL MEASURE
STEP SUBJECT FROM _ To OUTPUT ADJUST ADJUST FOR REMARKS
i. Discriminatar 98MH2 ANT input ANT Between TPi and dTl +5mv ~ -5mV
coil adj. 65.2dBf (60:13) term inai TP2 of F3644 (F6644)
(No.MOD.) 7551 DC Volt Meter

O FM RF adjustment 3: Dial Calibration are not necessary. when these circuits are defective, replace FM Front-end Pack with new one.

(2) FM Stereo Adjustment .
Note: 1. Selector Switch .................. TUNER

2. Band Selector Switch . . FM
3. FM MODE Switch ........... . . . . . STEREO
4. See Figs. 3-5, 3-7 on page 6 for MEASURE OUTPUT and ADJUST point.
FEED SIGNAL WEASURE
STEP SUBJECT FROM TO OUTPUT ADJUST ADlUST FOR REMARKS
l. PLL VCO Adj. 98MHz ANT input ANT Stereo indicator dVRi Light indicator Adjust the (WM
65dBf (59.8dB), FM terminal (F6644) within center of
$56, Pilot19kH219% 750 lighting level
MOD.), R or L MODE
ikHz + Pilot (100%
MOD.), STEREO SG
FLL vco Adj, No input - Pin 9 of dlCZ dVRi 19kHz tZOOHz
in case of using - FNQ- CDUMBY (F3544) .._
Freq. Counter (F3544)
2. Muting Level 98MHz ANT input ANT Tuner Out or dVR'z Output signal
Adi. 18dBf (12.8dB), lkHz terminal indicator (F-3693) comes out.
(100% MOD.), FM 556 75:2 VTVM. Scope