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SHARP 14R2BK
Service Manual


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

Description of SHARP 14R2BK 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.

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Text excerpt from page 8 (click to view)
14R2BK

CONVERGENCE CRT CUT-OFF, BACKGROUND AND SUB-CONTRAST ADJUSTMENT
BGR ( To be done (I C BUS DRI-RS/RW/RC, DRI-GS/GW/GC, DRI-BS/BW/ same as beside procedure. 2

No. point Adjustment conditions/procedure Waveform or others No. point Adjustment conditions/procedure Waveform or others

1 CONVERGENCE 1. Receive the "Crosshatch Pattern" signal. 1 CRT CUTOFF Remark *Alternative Procedure

ADJ. 2. Using the remote controller, call NORMAL mode. ADJUSTMENT 1. Before CRT cutoff adjustment, SUB-BRIGHT, (1) Step (1), (2), (3) and (4) are

after the purity STATIC CONVERGENCE CONTROL) BC, CUT-R and CUT-G must be INITIAL DATA. (2) Then continue adjust until readjustment. 1. Turn the 4-pole magnet to a proper opening anG

2. Turn the 6-pole magnet to a proper opening anNO VIDEO signal. related test points as below gle in order to superpose the green colour over sistor. TP47G, BLUE = TP47B. *4. Next, checking AKB circuit function by slowly in(4) Then adjust Screen VR until the DYNAMIC CONVERGENCE R suddenly on and off (AKB start function). 3.3Vdc B Fig. 5-1

R ours. 1. Switch TV VIDEO mode,BLUE BACK OFF, with (3) Connect the oscilloscope to

B 2. CRT Cutoff adjustment must be done inside a trace line appear and make sure dark room. the colour appear whether red, green or blue.
gle in order to superpose the blue and red col-

2. Press R/C to set Picture Normal condition. which is based on colour appear blue and red colours. RGB 3. First, off the by adjust screen variable reat (2) RED TP47R, GREEN =

1. Adjust convergence on fringes of the G crease screen variable resistor until colour raster tip of signal reach 3.3Vdc.

RGB
adjustment.nextthecontinueGt

screen in the following steps. 5. Then continue adjust until retrace line appear. a) Fig. 5-1: Drive the wedge at point "a" and swing 6. Finally, slowly decrease the screen variable rethe deflection coil upward. Fig. 5-2 sistor until screen retrace line cut off. (Not Raster) b) Fig. 5-2: Drive the wedge at points "b" and "c" Note : and swing deflection coil downward. Must confirm the AKB function in set before B c) Fig. 5-3: Drive the "c" wedge deeper and swing

R 0 the deflection coil rightward.
NESS hatch pattern with 5 black level windows) the deflection coil leftward.

d) Fig. 5-4: Drive the "b" wedge deeper and swing 2 SUB-BRIGHT1. Call " SUB-BRI" in service mode. (Receive Cross1 Fig. 5-3 (I C BUS that line 1and 2 have the tapesame overdarkness them.2

2. Fix all wedges on the CRT and apply glass ADJUSMENT *(2) Adjust the SUB BRIGHT " bus data in order 1 2 3 4 5

R 2. Finally data minus 1 to make line 1, 2, B brighter than line 2 magnet unit lock screw.

BGR CONTROL) wherelse line 3 is one step (data) brighter than 3. Apply lacquer to the deflection yoke lock screw,

magnet unit (purity, 4-pole, 6-pole magnets) and G Line 3 is one step (data) and 3 are in same level (darkness).

2
1 2 3 4 5 Fig. 5-4

8
screen.

Finally received the Red-only and Blue-only signals to make sure there is no other colours on the

Wedge "a" About 100° Lacquer Wedge "c" "b"

4-pole magnet 6-pole magnet CRT neck

Note*** SAMSUNG CRT : 32mm CPT CRT : 35mm TOSHIBA CRT : 35mm

Purity magnet

Lacquer Note***

8-1 8-2

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