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SHARP 21GT-22
Service Manual


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  • Contains Circuit Diagrams
  • Download
  • PDF Format
  • Complete manual
  • Language: English
Price: $4.99

Description of SHARP 21GT-22 Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagrams, printed circuit boards, repair tips, wiring diagrams, block diagrams and parts list. Service Manual ( sometimes called Repair Manual ) is used mainly by technicians.

If You just want to know how to use Your tv, video, mp3 player etc. You should look for Owner's Manual. After placing order we'll send You download instructions on Your email address.

The manual is available in languages: English

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Text excerpt from page 7 (click to view)
PURITY CONVERGENCE ADJUSTMENT

NO. Adjustment part Adjusting procedure conditions Waveform and others

PURITY ADJ. GREEN-ONLY Adjust 1 CONVERGENCE 1. Receive the "Crosshatch Pattern" signal. BGR

beam current to ~ 700 µA. ADJ. 2. Using the remote controller, call NORMAL
R 3. Maintain purity magnet at the zero magadjustment.) Static convergence

2. Degauss CRT enough with the degausing (To be done mode. B

coil. a b G after the purity

4. Observe the points a, b, as shown in Fig. 1-1 colours. Fig. 1-1 A rank requirement. angle in order to superpose the green colour
G

netic field and keep static convergence 1. Turn the 4-pole magnet to a proper opening roughly adjusted. angle in order to superpose the blue and red Fig. a
RGB through microscope. Adjust the landings R 5. Orient raster rotation to 0 eastward. over the blue and red colours.

2. Turn the 6-pole magnet to a proper opening

6. Tighten up the deflection coil screws. B

» Tightening torque: 108N ± 20 N Dynamic convergence

7. Make sure CRT corners landing meet screen in the following steps. Fig. b

(11kgf ± 2 kgf) 1. Adjust convergence on fringes of the A
B

A rank requirements. If not, stick magnet RGB a) Fig. a : Drive the wedge at point "a" and sheet to correct it. B swing the deflection coil upward. G Note:This adjustment must be done after b) Fig. b : Drive the wedge at point "b" and "c" R warming up unit for 30 minutes or and swing the deflection coil downward. longer with a beam current over 700 c) Fig. c : Drive the "c" wedge deeper and
A = B µA.

swing the deflection coil rightward. Fig. 1-2
R G

* For following colours press R/C RGB key to d) d : Drive the "b" wedge deeper and Fig. c
(on right of the CRT)

change. Rank "A" swing the deflection coil leftward. BGR 3. Apply lacquer to the deflection yoke lock screw,
A

2. Fix all wedges on the CRT and apply glass tape over them. B magnet unit (purity, 4-pole, 6-pole magnets) and magnet unit lock screw. Fig. d Green-only Blue-only Red-only

7
B on the screen.

Finally received the Red-only and Blue-only signals to make sure there is no other colours Wedge "a"
screen cleared
A = B

Signal-colour About 100°

4-pole magnet 6-pole magnet CRT neck Fig. 1-3

Lacquer

(on left of the CRT) Wedge

Rank "A"
"b" "c"

* Press R/C RGB key for 1 second in NORMAL MODE, the colLacquer our will change to RGB mono Purity magnet colour mode.

20mm

21GT-22

7-1 7-2

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