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Aiwa TV-AN1410, Service Manual

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Aiwa TV-AN1410 Service Manual Download Page 19

– 19 –

5-1.   VCO ADJUSTMENT    VCO (PIF) Adjustment /

Video Carrier Frequency Free Running Adjustment

Input signal : RF-Color bar

                               Input level : 90dB

µ

V

                               Broadcast CH/fc=45.75MHz

Mode : TUNER
Test point : INPUT/TP-102   IF   (TU101-PIN 11)

                            OUTPUT/TP-201   AFT   (IC301-PIN 44)

Adjustment point : L205/P-IF
Measuring instrument : Oscilloscope

                                                Pattern generator / Leader : LCG-404

1. Connect oscilloscope to TP-201.
2. Input specified level of RF signal to TP-102 and adjust L205 until

TP-201 voltage becomes 2.8V

±

0.3VDC.

5-2.   SIF ADJUSTMENT    Audio IF Modulation Adjustment

Input signal : AM/FM-SG  RF  OUT/4.5MHz - SIF

                               MOD  OFF
                               90dB

µ

V

• Simple adjustment method receives normal broadcasting.
Mode : TUNER
Test point : INPUT / TP-203 : IC301-PIN 52

                            OUTPUT / TP-202 : IC301-PIN 54

Adjustment point : L201/S-IF
Measuring instrument : Oscilloscope

                                               AM/FM-Signal generator

1. Connect oscilloscope to TP-202.
2. Input specified signal to TP-203 and adjust L201 until TP-202

voltage becomes 4.5V 

±

 0.2VDC.

5.

Tuner Adjustment:

Perform the following adjustment in case of replacing any adjustment element during the repair. Proceed with the following adjustments as well
as in the adjustment menu screen. If those adjustments are not completed on both sides, the required adjustment will not be registered even
thought the adjustment has been processed in the adjustment menu screen.

The components which will be affected due to the repair.
• VCO coil
• SIF coil

Summary of Contents for TV-AN1410

Page 1: ...P P L E M E N T TV AN1410 NH This Service Manual contains the additional information NOTICES BEFORE REPAIRING DISASSEMBLY INSTRUCTIONS and ADJUSTMENT for the model TV AN1410 NH If requiring the other information see Service Manual of TV AN1410 NH S M Code No 09 99B 417 4R1 ...

Page 2: ... to deal with it 6 Avoid an X ray Safety is secured against an X ray by giving considerations to the cathode ray tube and the high voltage peripheral circuit etc Therefore when repairing the high voltage peripheral circuit use the designated parts and do not change the circuit Repairing except indicates causes rising of high voltage and the cathode ray tube emits an X ray 7 Perform a safety check ...

Page 3: ... bent the hook to remove the cap the spring characteristics of the hook could be lost and when reinstalled the cap would come off from the CRT anode button easily causing an accident Do not turn the anode cap 3 If the anode cap is turned in the direction of its circumference the hook is likely to come off 2 2 Anode Cap Removal Discharge the anode voltage See Fig 2 1 1 Connect a flat bladed screwdr...

Page 4: ...and so it does not come off 2 1 Caution before Reinstalling Never turn the anode cap after installing it Never re use the hook when it has been deformed 1 If the anode cap is turned after it is installed it may come off Therefore arrange the high voltage cable before attaching the anode cap See Fig 3 1 2 If you have attached the anode cap before arranging the high voltage cable arrange the cable c...

Page 5: ...ble is not arranged correctly the anode cap could turn and cause an installation defect 4 Turn over the rubber cap symmetrically on the left and right See Fig 3 4 Caution Take great care not to damage the anode cap 5 Fit your forefinger over the projection at the center of the cap and hold the cap between your thumb and middle finger See Fig 3 5 Fig 3 4 Fig 3 5 ...

Page 6: ...utton Hook 30 Anode button Hook 8 Pull the anode cap slightly with the rubber cap turned over and visually check that the hook is engaged securely 9 Release your hand from the rubber cap of the anode cap Caution Cover the anode cap so that it does not lift 10 Hold the skirt of the andoe cap slightly to improve the close contact between the cap and CRT 11 Check that the anode cap is in close contac...

Page 7: ... diection of arrow 1 See Fig 4 1 5 MAIN C B PWB MAIN REMOVAL 1 Remove connector CN401 2 Remove connector CN801 3 Remove connector CN802 4 Pull out the MAIN C B in the direction of arrow 2 See Fig 4 1 CN801 Power Cord Front cabinet MAIN C B CN401 Speakers CN903 NK C B CN902 CN901 CN802 Degauss cord Fig 4 1 ...

Page 8: ... picture quality for each mode to the factory setting 4 Position the front screen facing to the east as much as possible 1 2 Purpose 1 Beam landing adjustment purity magnet Set the left right balance of beam landing If there is a discrepancy in this adjustment a color irregularity will occur After completion of the landing adjustment it is necessary to perform a convergence adjustment Color irregu...

Page 9: ...he CRT s back screen and disengage Be careful not to loose the lock ring too much If the magnet assembly has become shifted during adjustments secure it to the position in Fig 1 4 3 Beam convergence adjustment 6 pole magnet With a 4 pole magnet align the G beam with the already aligned R B beam Align the G beam with the R B beam Fig 1 3 DY lock screw Purity 4 pole 6 pole Lock ring NK C B Magnet as...

Page 10: ...m with the landing magnet After using the landing magnet be sure to demagnetize the CRT with degausser and verify that there is no occurrence of color irregularity Refer to Fig 1 6 Landing magnet 81 JTI 710 010 two sided adhesive tape 80 XVI 218 010 Cushion Fig 1 6 R G B R B S N N S NS SN NN SS S S N N 5 Gradually shift the deflecting yoke toward the front toward the CRT funnel Stop movement at th...

Page 11: ...of the two magnets it is possible to adjust the amount of the beam s movement 1 Receive the dot pattern signal through the pattern generator 2 Pay attention to the center of the screen and perform adjustments with two 4 pole magnets so that the R beam and B beam are perfectly aligned and become a magenta color Refer to Fig 1 2 3 In the same way pay attention to the screen and perform adjustments w...

Page 12: ...mode operation method Make sure that do confirmation after replacing EEP ROM 1 Enter to the Aging Mode by pressing the TEST key on the remote controller Refer to Fig 1 2 Press the SYSTEM key to check the status of distinction switch Refer to Fig 2 If the contents are different choose IN ST by pressing the 1 key for the destinations For the data move 0 F by using channel keys and change to 0 or 1 C...

Page 13: ...CONTRAST PUSH CH UP DN KEY PUSH CH UP DN KEY PUSH CH UP DN KEY PUSH CH UP DN KEY PUSH CH UP DN KEY PUSH CH UP DN KEY PUSH CH UP DN KEY PUSH CH UP DN KEY PUSH 1 6 KEY PUSH 1 5 KEY PUSH 1 4 KEY PUSH 1 4 KEY 1 H POS 2 V POS 3 V SIZE 4 OSD POS 5 PIF VCO SD AFT SD AFT 6 RF AGC PAGE 1 1 R CUTOFF 2 G CUTOFF 3 B CUTOFF 4 G DRIVE 5 B DRIVE PAGE 2 1 SUB CONTR 2 SUB BRIGHT 3 SUB TINT 4 SUB COLOR PAGE 3 1 358...

Page 14: ...N902 1 CN901 J402 VIDEO 1 INPUT OUTPUT REAR MAIN C B Top View A FOCUS SCREEN T601 FBT J403 HEADPHONE J401 VIDEO 2 IN FRONT TP102 RF AGC TP102 IF R103 IC301 1 TP302 PIN 3 TP202 FM DET TP201 AFT 1 BT301 TU101 AERIAL L201 S IF L205 P IF R101 R211 TP203 C213 C332 SW801 POWER 1 IC1 T601 FBT SFR ...

Page 15: ...of squares on both top and bottom of the dot Fig 1 2 1 3 V SIZE Vertical Size Adjustment Adjustment Menu Screen PAGE 1 3 Input signal Crosshatch Measuring instrument Pattern generator Leader LCG 404 Using the volume keys on the jig remote controller adjust the vertical number of squares on the crosshatch screen to 13 or 14 Fig 1 3 1 Menu Screen Adjustment Operate after inputting the following init...

Page 16: ...O Adjustment Adjustment Menu Screen PAGE 1 5 Input signal ANT RF INPUT Color bar Measuring instrument Pattern generator Leader LCG 404 Using the volume keys on the jig remote controller adjust AFT status on the screen to OK Fig 1 5 If there is more than one area to adjust select the average figure NG will be indicated for SD when no screen signal was sent It will not be any problem for VCO adjustm...

Page 17: ...lume keys on the jig remote controller adjust the figure of 5 B DRIVE to more than 200 until the screen becomes bluish color 2 6 Reduce the figure to the point where the bluish color disappears 2 7 Repeat the above process of 2 1 to 2 6 for several times to adjust the screen whiter Focus Adjustment Input signal Dot pattern Adjustment point SFR located at upper part of FBT T601 Measuring instrument...

Page 18: ...cilloscope Pattern generator Leader LCG 404 Test point TP302 BT301 wire connector PIN 3 1 Connect oscilloscope to TP302 2 Use the volume keys of the jig remote controller and adjust the top and bottom excursions of waveform to be linear as shown in the Fig 3 4 4 TV SETTING CHECK Checking of Setting per Model Basis Adjustment Menu Screen PAGE 4 1 4 The setting details are fixed per model basis Do n...

Page 19: ...imple adjustment method receives normal broadcasting Mode TUNER Test point INPUT TP 203 IC301 PIN 52 OUTPUT TP 202 IC301 PIN 54 Adjustment point L201 S IF Measuring instrument Oscilloscope AM FM Signal generator 1 Connect oscilloscope to TP 202 2 Input specified signal to TP 203 and adjust L201 until TP 202 voltage becomes 4 5V 0 2VDC 5 Tuner Adjustment Perform the following adjustment in case of ...

Page 20: ...2 11 IKENOHATA 1 CHOME TAITO KU TOKYO 110 JAPAN TEL 03 3827 3111 Printed in Singapore 9420025 ...

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