29B-FX1
bA = BA = B
ABAB
Fig. 4-2
Fig. 4-1Fig. 4-3
Rank "A" Rank "A"
a
(on the right of the CRT)(on the left of the CRT)
90mm90mmcolour key 1 second or more, and the monocolour mode will be selected without the service mode.
*Continuosly press the mono-Even with TEXT key or "R.G.Cy" key, it can be directly switched to each monocolour screen.
?
screenRED
2 kgf)Monocolour
?
20 N (11
?9-2
screen BLUE
ment must be done afterMonocolourMonocolour
screen release
A.
m
PURITY ADJUSTMENT
warming up the unit for 30 minutes or longer with a beam current over 1600 50 monocolour key of R/C for process,and the monocolour screen (green) will be selected.
Tightening torque: 108 screen
mote controller, and set tthe beam current of 1.6mA with the contrast control.For the adjustable magnetic field *BH = 0 *Bv = refer to the job instructions sheet Adjustable magnetic field is shown in P8-1.zero magnetic field, and the convergence must be adjusted to be rough. With P-MG, adjust it to the center - rank A.through the microscope. Move DY fore and aft to set the landing at the point. (rank A)center "Rank AB".east direction.Enetic sheet to set the landing at Rank A for com- pensation.Note:This adjustNote:Select the service mode, and press thescreen as follows.GREENcontent. Please refer to the following page.
Monocolour
1.Select the green monocolour screen with re-2.Degauss the CRT enough with the degausing coil.3.The purity magnet must be previously set at the4.Observe the points a, b as shown in Fig. 4-15.If the a/b balance is poor, compensate it to the6.Align it to zero, keeping the raster rotation in the6.Tighten up the deflection coil fastening screws.8.Checking the CRT corner area, bond the mag-*Every push of the monocolour key changes the*Adjustment for uniformity is change to another
PURITY ADJ.
1
No.Adjusting pointAdjusting procedure/conditionsWaveform and others
Note: *SURROUND OFF *AV MODE (STANDARD) *S-NORMAL state *S-VOL Max *Bass + OFF
0.3 Vrms
?9-1
0.10 Vp-p.
?
SOUND ADJUSTMENT
Audio signal: 400Hz, 100% modulated (50KHz dev.)R) terminal. (Terminate with 10 K ohm imped- ance).Volume UP/DOWN key, so that the 400Hz sine wave be 1.76 Vp-p. Tolerance: 1.76 Vp-p Signal content: 400Hz 100% Mod.nector.cate 5.2 Vrms (at L-CH) Adjustment value: 5.2 Vrms sure the sound is heard from the speakers. Then put the unit in no signal state.
1.Receive PAL B/G signal.2.Connect the Oscilloscope to the Audio Out (L or3.Call the "RF-S-SOUND" in service mode. 4.Increase or decrease "RF S-SOUND" by using1.Receive PAL Color Bar signal.2.Connect the probel of the meter (*)to (SI) con-3.Select SUB-VOL in the service mode. 4.Adjust the SUB-VOL data to make the meter indi-1.Receive "PAL COLOUR BAR" signal. 2.Turn up the volume control to maximum, make3.Check the sound mute is effective. 4.Finally turn sound level of CTV to minimum.
RF SUB SOUND (BUS ADJUST- MENT)SUB VOL (BUS ADJUSTMENT)NOISE MUTE CHECKING
123
No.Adjusting pointAdjusting procedure/conditionsWaveform and others
9 |
ACEC
