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3

1. SAFETY 

PRECAUTIONS 

1.  The design of this product contains special hardware, many 

circuits and components especially for safety purposes. For 
continued protection, no changes should be made to the 
original design unless authorized in writing by the 
manufacturer. Replacement parts must be identical to those 
used in the original circuits. Service should be performed by 
qualified personnel only. 

 
2.  Alterations of the design or circuitry of the products should 

not be made. Any design alterations or additions will void the 
manufacturer’s warranty and will further relieve the 
manufacturer of responsibility for personal injury or property 
damage resulting therefrom. 

 
3.  Many electrical and mechanical parts in the products have 

special safety-related characteristics. These characteristics 
are often not evident from visual inspection nor can the 
protection afforded by them necessarily be obtained by using 
replacement components rated for higher voltage, wattage, 
etc. Replacement parts which have these special safety 
characteristics are identified in the parts list of Service 
manual. Electrical components having such features are 
identified by shading on the schematics and by ( 

  ) on 

the parts list in Service manual. The use of a substitute 
replacement which does not have the same safety 
characteristics as the recommended replacement part 
shown in the parts list of Service manual may cause shock, 
fire, or other hazards 

 
4. 

Don’t short between the LIVE side ground and 
ISOLATED (NEUTRAL) side ground or EARTH side 
ground when repairing

. Some model’s power circuit is 

partly different in the GND. The difference of the GND is 
shown by the LIVE: (   ) side GND, ISOLATED  
(NEUTRAL): (      ) side GND and EARTH: (        ) side GND. 
Don’t short between the LIVE side GND and ISOLATED 
(NEUTRAL) side GND or EARTH side GND and never 
measure with a measuring apparatus (oscilloscope etc.) the 
LIVE side GND and ISOLATED (NEUTRAL) side GND or 
EARTH side GND at the same time. If above note will not be 
kept, a fuse or any parts will be broken. 

 
5.  If any repair has been made to the chassis, it is 

recommended that the B1 setting should be checked or 
adjusted (See ADJUSTMENT OF B1 POWER SUPPLY). 

 
6. 

The high voltage applied to the picture tube must conform to 
that specified in Service manual. Excessive high voltage can 
cause an increase in X-Ray emission, arcing and possible 
component damage, therefore operation under excessive 
high voltage conditions should be kept to a minimum, or 
should be prevented. If severe arcing occurs, remove the AC 
power immediately and determine the cause by visual 
inspection (incorrect installation, cracked or melted high 
voltage harness, poor soldering, etc.). To maintain the proper 
minimum level of soft X-Ray emission, components in the 
high voltage circuitry including the picture tube must be the 
exact replacements or alternatives approved by the 
manufacturer of the complete product. 

 
7.  Do not check high voltage by drawing an arc. Use a high 

voltage meter or a high voltage probe with a VTVM. 
Discharge the picture tube before attempting meter 
connection, by connecting a clip lead to the ground frame 
and connecting the other end of the lead through a 10k

 2W 

resistor to the anode button. 

 
8.  When service is required, observe the original lead dress. 

Extra precaution should be given to assure correct lead 
dress in the high voltage circuit area. Where a short circuit 
has occurred, those components that indicate evidence of 
overheating should be replaced. Always use the 
manufacturer’s replacement components. 

9. Isolation 

Check 

(Safety for Electrical Shock Hazard) 
After re-assembling the product, always perform an isolation 
check on the exposed metal parts of the cabinet (antenna 
terminals, video/audio input and output terminals, Control 
knobs, metal cabinet, screw heads, earphone jack, control 
shafts, etc.) to be sure the product is safe to operate without 
danger of electrical shock. 

10.  The surface of the TV screen is coated with a thin film which 

can easily be damaged. Be very careful with it when handle 
the TV.

 

Should the TV screen become soiled, wipe it with a 

soft dry cloth. Never rub it forcefully. Never use any cleaner 
or detergent on it.

 

 
(1) Dielectric 

Strength 

Test 

The isolation between the AC primary circuit and all metal 
parts exposed to the user, particularly any exposed metal 
part having a return path to the chassis should withstand a 
voltage of 3000V AC (r.m.s.) for a period of one second. 
(…Withstand a voltage of 1100V AC (r.m.s.) to an appliance 
rated up to 120V, and 3000V AC (r.m.s.) to an appliance 
rated 200V or more, for a period of one second.) 
This method of test requires test equipment not generally 
found in the service trade. 

(2)  Leakage Current Check 

Plug the AC line cord directly into the AC outlet (do not use 
line isolation transformers during this check). Using a 
“Leakage Current Tester”, measure the leakage current from 
each exposed metal part of the cabinet, particularly any 
exposed metal part having a return path to the chassis, to a 
known good earth ground (water pipe, etc.). Any leakage 
current must not exceed 0.5mA AC (r.m.s.). 
However, in tropical area, this must not exceed 0.2mA AC 
(r.m.s.). 

Alternate Check Method 

Plug the AC line cord directly into the AC outlet ( do not use 
a line isolation transformer during this check.). Use an AC 
voltmeter having 1000 ohms per volt or more sensitivity in 
the following manner. Connect a 1500

 10W resistor 

paralleled by a 0.15µF AC-type capacitor between an 
exposed metal part and a known good earth ground (water 
pipe, etc.). Measure the AC voltage across the resistor with 
the AC voltmeter. Move the resistor connection to each 
exposed metal part, particularly any exposed metal part 
having a return path to the chassis, and measure the AC 
voltage across the resistor. Now, reverse the plug in the AC 
outlet and repeat each measurement. Any voltage measured 
must not exceed 0.75V AC (r.m.s.). This corresponds to 
0.5mA AC (r.m.s.). 
However, in tropical area, this must not exceed 0.3V AC 
(r.m.s.). 
This corresponds to 0.2mA AC (r.m.s.) 

 

 

 

Summary of Contents for 1407

Page 1: ...SERVICE MANUAL Colour Television Haier model 1407 Customer model HTAR14 CAUTION READ THIS MANUAL CAREFULLY TO DIAGNOSE TROUBLE CORRECTLY BEFORE OFFERING SERVICE ...

Page 2: ...ock diagram 4 3 Replacement of memory IC 5 4 Service adjustment 5 5 ICs functional description 8 6 Test point waveform 10 7 All ICs voltages 10 8 Purity convergence adjustment 12 9 CIRCUIT DIAGRAM Attached 10 WIRING CONNECTION DIAGRAM Attached ...

Page 3: ...not check high voltage by drawing an arc Use a high voltage meter or a high voltage probe with a VTVM Discharge the picture tube before attempting meter connection by connecting a clip lead to the ground frame and connecting the other end of the lead through a 10kΩ 2W resistor to the anode button 8 When service is required observe the original lead dress Extra precaution should be given to assure ...

Page 4: ... 4 2 Block diagram TDA11115HPS N2 series with mono intercarrier sound demodulator ...

Page 5: ... of corresponding factory menus Press EXIT key to exit factory mode Focus adjustment 1 Receive a crosshatch signal 2 While watching the screen adjust the FOCUS VR on the FBT to make the vertical and horizontal lines as fine and sharp as possible Geometrical adjustment Receive PAL standard complete pattern signal Adjustment steps a Adjust VSL to the centre horizontal line just appears from half bot...

Page 6: ... Take Over A AGC SPEED AGC SPEED A OIF 8 A IF 0 38MHz 1 45 75MHz 2 38 90MHz 3 33 90MHz 0 FFI EVERADJUST 0 GD 0 MTXF 0 BRIGHTMAX 63 CONTRASTMAX 63 CONTRASTMID 55 HUEMID 32 NOTE THE ITEMS WITH REMARK A IS ADJUSTABLE DATA Optional data 1 OP1 Bit Function Description Preset Remark Bit 0 6HSH 5HSH 0 63 0 63 EA Bit 1 VSD 0 63 0 63 EA 2 OP2 Bit Function Description Preset Remark Bit 7 5 6VSL Vertical slo...

Page 7: ... 32 EA 5 OP5 Bit Function Description Preset Remark 1 0BRI Soft Brightness 40 EA 2 0COL Soft Color 40 EA 3 0CON Soft Contrast 40 EA 4 0SHP Soft Sharpness 50 EA 5 1BRI Standard Brightness 50 EA 6 1COL Standard Color 50 EA 7 1CON Standard Contrast 50 EA 8 1SHP Standard Sharpness 20 EA 9 COLORMID COLORMID 26 EA 10 BRIGHTNESSMID BRIGHTNESSMID 32 EA 11 VOLUMEMID VOLUMEMID 32 EA 6 OP6 Bit Function Descr...

Page 8: ...Power ON this pin will be high SCL 2 I 2 C bus clock line SDA 3 I 2 C bus data line TUNING 4 tuning Voltage Vt PWM output KEY 5 Control keys input SYSTEM 6 TV system control VOL 7 Sound Volume control PWM output MUTE 8 Sound mute output VSSC P 9 Digit ground for µ controller core and periphery CTL 10 DVD power control STANDBY 11 STANDBY control VSSA 12 Analog ground of digital ground of TV process...

Page 9: ...SW2 45 YUV insertion input R2 VIN 46 R input V R Y input PR input G2 YIN 47 G input Y input B2 UIN 48 B input U B Y input PB input BCLIN 49 Beam current limiter input BLKIN 50 Black current input RO 51 Red output GO 52 Green output BO 53 Blue output VDDA 54 Analog supply of Closed Caption decoder and digital supply of TV processor 3 3 V VPE 55 Ground VDDC 56 Digital supply to core 3 3 V OSCGND 57 ...

Page 10: ...al output Vcc 3 Pump up power V PRO 8 Vertical protection V OUT 4 Vertical output V FEEDBACK 9 Vertical feedback GND 5 Ground 5 U101 Tuner PIN Function PIN Function 1 AGC 7 5V 2 vacant 8 vacant 3 Gnd 9 Vt 33V 4 SCL 10 Gnd 5 SDA 11 IF Out 6 5V 6 Test point Waveforms 5Vpp 0 9Vpp 1 3Vpp H H 1Vpp V CRT KB CRT KG CRT KR 95Vpp 95Vpp 95Vpp H H H TDA1115IN40 2 5Vpp 2 5Vpp 3 8Vpp H H H TDA1115IN40 TDA1115I...

Page 11: ...3 0 2 PIN 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 V 0 5 0 3 0 1 7 2 4 3 4 8 3 9 0 3 3 0 3 6 1 4 2 5 2 5 2 5 PIN 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 V 1 9 5 0 2 4 2 4 2 4 3 1 0 3 2 0 1 8 1 7 0 3 2 5 1 3 3 5 TDA4864 PIN 1 2 3 4 5 6 7 8 9 V 0 8 0 7 16 6 9 0 43 7 2 0 3 7 2 TDA1517 PIN 1 2 3 4 5 6 7 8 9 10 11 12 V 10 4 4 0 4 4 2 75 1 4 0 1 4 0 35 4 4 0 4 4 24C08 PCF8598 PIN 1 2 3 4 ...

Page 12: ...o the centre of the screen Fig 3 8 Move the deflection yoke forward and fix the position of the deflection yoke so that the whole screen will become green 9 Insert the wedge to the top side of the deflection yoke so that it will not move 10 Input a crosshatch signal 11 Verify that the screen is horizontal 12 Input red and blue raster signals and make sure that purity is properly adjusted CRT WEDGE...

Page 13: ...t convergence DYNAMIC CONVERGENCE ADJUSTMENT 1 Move the deflection yoke up and down and overlap lines in the periphery Fig 2 2 Move the deflection yoke left to right and overlap the lines in the periphery Fig 3 3 Repeat 1 and 2 above and make the best convergence After adjustment fix the wedge at the original position Fasten the retainer screw of the deflection yoke Fix the 6 magnets with glue FRO...

Page 14: ...C602 0 47uF 16V C601 0 47uF 16V Z201 K7266D 1 2 3 4 5 X301 RGB AMP Gnd1 L505 2uH C510 47uF 50V N505 KA431 1 2 3 4 5 VFB VCC SYNC N502 KA5Q0765BT Gnd Gnd Gnd R506 10 V509 BPSS5140S R532 1 5K R531 10K Gnd Gnd 1 2 3 4 N501 PC817 C356 22nF Gnd C309 220nF R338 100 VP1 1 VP3 2 VP2 3 GND 4 Vout 5 IN 6 IN 7 N801 TDA4864AJ Gnd SCL SDA STBY IR V305 C1815 V301 C1815 V302 C1815 IF1 IF2 Main R Main L FBLY Hout...

Page 15: ...Location No Specification Qty Cord POWER BAND AV PCB ...

Page 16: ...16 Sincere Forever ...

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