SHARP 29AFX5 Repair Manual

29A-FX8 29A-FX5
SOUND LEVEL ADJUSTMENT !"#$
NO. Adjustment partAdjusting procedure and conditionsWaveform and others
 !"#$ !"#
1SUB SOUND1Receive E-12ch (PAL colour bar). Signal con-Note:1 1
bJNO
Em^i !F


(SUB VOL)tent: 400Hz 100% Mod.* SPATIALIZER ..... OFFEpr_=sli
!
QMMeo=NMM G pm^qf^ifwbo KKKKK

(I2C bus2Connect the probe of the meter to (SI) con-* S-Normal stateEfO` !"2 ! !"# pf !"#GpJ !
adjustment)nector. (See Note)* S-VOL ................ Max3 !"#$%&'=?pr_=sli?
G pJsli KKKKKKKKKKKKKKKKKKKK

3Select "SUB VOL" in the service mode*.S-BOOSTER ...... OFF4 !"#$% !" #$%G pJ_llpqboKKKKKKKK

4Adjust the sub-sound data to make the meterUKRseaë !"#
indicate 8.5Vrms (at L-ch).
UKR
MKQseaë
Adjustment value : 8.5 ? 0.4Vrms
2Noise mute1Receive E-12CH (PAL colour bar).2 !"1
bJNO
Em^i !F
check2Maximize the sound volume to verify that the2 !"#$% !"#$%&'$()
sound is output from the speaker. Then, set !"#$%&'
the non-signal state.3 !"#$%&'()*+
3At this time, verify that the audio mute oper-4 !"# !"#$%&'()
ates.
4After checking the operation, set the sound
volume to be the minimum.
SIF (NICAM/IGR) ADJUSTMENTpfc=Ekf`^jLfdoF

NO. Adjustment partAdjusting procedure and conditionsWaveform and others
 !"#$ !"#
141VCO COIL1Receive E-69CH (PAL colour bar).1s`l=`lfi
1
bJSV
Em^i !F
T2300(Set the receiving frequency at AFT OFF Ex.qOPMME
^cq=lcc=bnKbJSVZURRKORjeo !
(in the NICAME-69=855.25 MHz.)Ekf`^j F
F
unit)2Connect the digital voltmeter to TP301 (in the2 !"#$%&qmPMNE !F

main unit).3
qOPMM
!"#$%Ms
!

3Verify that it is turned counterclockwise to 0VRs
 !"#qmOPMM !"#

and clockwise to 5V, and adjust T2300 to makeOKR
MKNs

the DC voltage of TP2300 become 2.5 ? 0.1V
in the range.
Y !"#$[=J=
<Single-unit adjustment> - For your Reference.sAAR
MKNs
Vcc5 ? 0.1Vfc !"#$PUKVjeo
NMâeo
IF input frequency 38.9MHz ? 10kHz !"#$%&
Control it under these conditions.

qOPMM
qmOPMMEkf`^j F !
Adjust T2300 to make the DC voltage of TP2300
OKR
MKNs !"
(in the NICAM unit) become 2.5 ? 0.1V.
!"#$%&' ()
After single-unit adjustment, check the practical
setup.
qmPMNE !F

!"#$ %&'"#E^cq=lccF !
Align the receiving frequency to the select chan- !"#OKR
NKMs

nel frequency. (AFT OFF)E
NKM !"#$%&'(sAA !cç

The checked TP301 in the main unit voltage must ! !"#$%& !"
be 2.5 ? 1.0V.
(Take care that ?1.0 is considered for the Vcc dif-
ference between the single unit and unit, Fo dif-
ference and so on, but is not the adjustment pre-
cision.)
E14C14