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SHARP 14BM2GMK2
Service Manual


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

Description of SHARP 14BM2GMK2 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 9 (click to view)
CRT CUT-OFF, BACKGROUND AND SUB-CONTRAST NTSC CHROMA ADJUSTMENT
BUS CONAV in. 4 Max 1. Receive the "Monoscope Pattern" signal.
SAME LEVEL

(Continued) No. point Adjusting procedure/conditions Waveform and others

No. point Adjusting procedure/conditions Waveform and others 2 1 SUB-TINT (I C 1. Receive the "NTSC 3.58 Colour Bar" signal thru

beam check Press R/C set Picture NORMAL condition. TROL) 2. Connect the oscilloscope to TP47B (P882 pin 5)

3. Connect the DC miliammeter between TP603 (+) BLUE-OUT.

4. Beam current must be within 800 ± 100 µA.(14") 3. Call the "SUB-TINT" mode in service mode. Adjust "SUB-TINT" bus data to obtain the wave4. Clear the SERVICE mode.

& TP602 (â). » Range : 100mV/div. (AC)(Use Probe 10:1) (Full Scale: 3 mA Range) » Sweep time : 10 µsec/div.

HORIZONTAL AND VERTICAL DEFLECTION LOOP ADJUSTMENT form shown as Fig. 1-1.

No. point Adjusting procedure/conditions Waveform and others

W Y Cy G Mg R B

Fig. 1-1

2

1 V-SLOPE (I C 1. Receive Monoscope Pattern Signal.

BUS CON2. Call the "V-LIN" mode. TROL) 3. Increase or decrease "V-LIN" by Volume key till

PROTECTOR OPERATION CHECKING horizontal line in the center of monoscope is

just at position where the blanking starts. No. point Adjusting procedure/conditions Waveform and others

2 V-SHIFT-50 Call the "V-CENT" mode. 1 BEAM PRO1. Receive "Monoscope Pattern" signal. * Select one of Q883/5/7 to do

2 (I C BUS TECTOR2. 2.Increase Setor CONTRASTdecrease MAX."V-CENT" eachby shortVolume test.key CONTROL) till the picture is centered. 3. Set BRIGHT MAX.

2

3 V-AMP50 (I C 1. Call the "V-AMP" mode. make sure the protector ON and switch to standby mode. TROL) set overscan of 9.5% typical. 2 Hâ¢V PROTEC1. Receive "Monoscope Pattern" signal.

4. During the Collector & Emitter of Q883/5/7 short,

BUS CON2. Increase or decrease "V-AMP" by Volume key to

Adjustment Spec 9.5% range +1% -0%.

H-SHIFT (50) 1. Call the "H-CENT" mode. TOR 2. Connect output of Bias Box to D603 cathode 4 (H-CENTER) 2. Increase or decrease "H-CENT" by Volume key (R610 side). 3. Set voltage of Bias Box 18V and make sure to center the picture horizontal. the protector is not work.

9
No. point Adjusting procedure/conditions Waveform and others

5 S-CORREC1. SET DATA TO 17. 4. Set voltage of Bias Box to 27V, and make sure

2 TION (I C BUS * Check the E-5 CH the Monoscope protector Pattern is then work. reCONTROL) adjust V-Slope, V-Shift and V-Amp to makesure

6 SUB-SHARPprotectors testing in +B line, check all possible damaged

adjustment is in acceptable Ring-Shaped. 3 Other 1. Once finish rectified Electrolytic Capacitor short

NESS 1. SET DATA TO 20. components on +B line. (Use random selected set for inspection) 1. Receive the "Monoscope Pattern" signal.

1 Focus

2. Press R/C to set Picture NORMAL condition. 3. Adjust focus control to get the best focusing.

A/V INPUT AND OUTPUT CHECKING PAL CHROMA ADJUSTMENT
1. Receive the "PAL Color Bar" signal (100% White 1 VIDEO AND AUDIO Color Bar, Sound 400 Hz 100% Mod). 2. Terminate the Video output with a 75 ohm imped1 SUB COLOUR 1. Receive the "PAL Colour Bar" signal. OUTPUT 3. Terminate the Audio output with a 10k ohm imVp-p ±3 dB). CONTROL) 3. Connect the oscilloscope to pedance. Make sure the O/P is as specified

No. point Adjusting procedure/conditions Waveform and others

2

ance. Make sure the output is as specified (1.0 (I C BUS 2. Press R/C to set Picture Normal condition. CHECK

Cy G B

Red cathode(D881 Cathode). » Range : 20 V/div. (AC) (Using 10:1 probe) (1.76 Vp-p ±3 dB). » Sweep time : 10 µsec/div.

4. R/C call "SUB COL" in SERVICE mode. 2 VIDEO AND 1. Using TV/AV key on the remote controller,

Adjust SUB COLOUR bus data, so 75% AUDIO INPUT make sure that the modes change in order of TV, White Red portions of PAL Color Bar be at W Y 100%W Mg R AV TV again and the video & audio output are CHECK

75% same level shown as Fig. 1-1. according to the input terminal for each mode.If
Fig. 1-1 put terminal of Front AV will be selected.

connect input to Front and Rear AV terminal, in5. Clear the SERVICE mode.

14BM2SMK2 14BM2GMK2

9-1 9-2

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