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SHARP 14E2RU
Service Manual


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

Description of SHARP 14E2RU 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 7 (click to view)
ADJUSTMENT PRECAUTION: PURITY ADJUSTMENT Make sure TV Set is in "Normal Condition" before switch to service mode for adjustment. No. point Adjusting procedure/conditions Waveform and others
1 PURITY ADJ. 1. Receive GREEN-ONLY signal. Adjust the beam current to about 700 µA(21") and 500µA

(14").

PIF ADJUSTMENT
a b 2. Degauss CRT enough with the degausing coil.
just the magnetic field. 1 Tuner IFT 1. Get tuner ready to receive the CH. E 9 field and keep the static convergence roughly Adjust the PLL data.
Oscilloscope IF OUT

No. point Adjusting procedure/conditions Waveform and others Note: Follow the Job Instruction Sheet to ad-

( PRESET ) signal,but with no signal input. 3. Maintain purity magnet at the zero magnetic 4. Observe the points a, b as shown in Fig. 4-1 the tuner antenna. ( RF SWEEP )
100k 75ohm

2. Connect the sweep generator's output cable to 1n60 1000p adjusted. 10k Fig. 4-1 through microscope. Adjust landing to the rank A requirements. 5. Orient the raster rotation to 0 eastward. ANCE probe with wave detector ; see Fig.1 ) to 6. Tighten up the deflection coil screws. A the tuner's IF output terminal. ( This terminal Fig.1 7. Make sure CRT corners landing meet the A 5. Set the RF AGC to 0 6 V no saturation with
P C to correct it.

3. Adjust the sweep generator's to 80dBuV.

4. Connect the response lead ( use LOW IMPED-

must have the probe alone connected ). » Tightening torque: 108 20 N (11 ± 2 kgf) E-9 CH rank requirements. If not, stick the magnet sheet B the waveform. Note: This adjustment must be done after shown in Fig. 2. -1.5+/-0.8dB warming up the unit for 30 minutes or longer with a beam current over 500 Note: Be sure to keep the tuner cover in position Fig.2 µA 14" and over 700 for 21". Fig. 4-2 during this adjustment. µA

6. Adjust tuner IF coil to obtain the waveform as

A = B

* For the following colours press R/C RGB key to (on right of the CRT)

Rank "A"

2 RF-AGC 1. Receive "PAL COLOUR BAR" signal. Note: For the 50 ohm signal change.

7
+ —

TAKE OVER » Signal Strength: 57 ± 1 dBµV (75 ohm open) strength gauge, when not POINT AD2. Connect the oscilloscope to TP201(Tuner’s AGC u s g 0 / 7 5 i m p d a n c e Green-only Blue-only Red-only JUSTMENT Terminal) as shown in Fig. 3. adapter, signal strength is (I C BUS 52±1dBµV(75 ohm open), inA2 CONTROL) Oscilloscope stead of 57±1dBµV (75 ohm

Precaution: The loss of using

+ TP201 screen cleared

open). Signal-colour 0.1V B
A = B Bias box TV Set

— impedance adapter

Fig. 4-3
» Bias box: About 4.5 V Rank "A"

(on left of the CRT)

Fig. 3

3. Call "AGC" mode in service mode. Adjust the * Press R/C RGB key for 1 sec-

"AGC" bus data to obtain Tuner output pin ond in NORMAL MODE, the drop 0.1V below maximum voltage. colour will change to RGB mono

4. Change the antenna input signal to 63~67dBµV, colour mode.

and make sure there is no noise.

5. Turn up the input signal 90~95 dBµV to be sure The TEXT "R. G. Cy" Key to other colours screen.

that there is no cross modulation beat. can be directly use to change

14E2-RU 21E2-RU

7-1 7-2

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