Service Manual
Page 1
com. cn f i nepr i nt . CAUTION READ THIS MANUAL CAREFULLY TO DIAGNOSE TROUBLE CORRECTLY BEFORE OFFERING SERVICE . SERVICE MANUAL Colour Television Haier model: 21F7A Customer model: MT2025D l FEATURES l DVD-TV 21" COMBO l AUTO TUNE/181 CHANNES l DVD/VCD/SVCD/CD/CD-R/CD-RW/JPEG/MP3 COMPATIBLE l FORMATO DE VIDEO 4:3PS、4:3LB l DOLBY AC-3 DECODE l PANATAL LOCK l ATSC TUNER l AC/DC PDF pdf Fact or y Pr o wÿww.
com. cn f i nepr i nt . CAUTION READ THIS MANUAL CAREFULLY TO DIAGNOSE TROUBLE CORRECTLY BEFORE OFFERING SERVICE . SERVICE MANUAL Colour Television Haier model: 21F7A Customer model: MT2025D l FEATURES l DVD-TV 21" COMBO l AUTO TUNE/181 CHANNES l DVD/VCD/SVCD/CD/CD-R/CD-RW/JPEG/MP3 COMPATIBLE l FORMATO DE VIDEO 4:3PS、4:3LB l DOLBY AC-3 DECODE l PANATAL LOCK l ATSC TUNER l AC/DC PDF pdf Fact or y Pr o wÿww.
Service Manual
Page 2
Replacement of memory IC 5 4. com. ICs functional description 8 6. Purity / convergence adjustment 11 9. CONTENTS 1. DVD maintenance 13 2 PDF pdf Fact or y Pr o www. Test point waveform 10 7. Service adjustment 5 5. f i nepr i nt . cn All ICs voltages 10 8. . Safety precautions 3 2. TV block diagram 4 3.
Replacement of memory IC 5 4. com. ICs functional description 8 6. Purity / convergence adjustment 11 9. CONTENTS 1. DVD maintenance 13 2 PDF pdf Fact or y Pr o www. Test point waveform 10 7. Service adjustment 5 5. f i nepr i nt . cn All ICs voltages 10 8. . Safety precautions 3 2. TV block diagram 4 3.
Service Manual
Page 3
.... Where a short circuit has occurred, those used in tropical area, this must not exceed 0.75V AC (r.m.s.). Never rub it when handle the TV. However, in the parts list of electrical shock. 10. Any voltage measured must not exceed 0.2mA AC (r.m.s.). ●Alternate Check Method Plug...conform to the original design unless authorized in the GND. When service is partly different in writing by qualified personnel only. 2. Should the TV screen become soiled, wipe it . (1) Dielectric Strength Test The isolation between the LIVE side ground and ISOLATED (NEUTRAL) side ground or ...
.... Where a short circuit has occurred, those used in tropical area, this must not exceed 0.75V AC (r.m.s.). Never rub it when handle the TV. However, in the parts list of electrical shock. 10. Any voltage measured must not exceed 0.2mA AC (r.m.s.). ●Alternate Check Method Plug...conform to the original design unless authorized in the GND. When service is partly different in writing by qualified personnel only. 2. Should the TV screen become soiled, wipe it . (1) Dielectric Strength Test The isolation between the LIVE side ground and ISOLATED (NEUTRAL) side ground or ...
Service Manual
Page 5
.... 2. Press [Program+] / [Program-] to select items and press [VOLUME+] / [VOLUME-] key, to CRT horizontal centre. Press "EXIT" key to CRT vertical centre. com. This TV uses memory IC. PROCEDURE FOR REPLACING MEMORY IC (1) Power off Switch the power off and unplug the power cord...f i nepr i nt . cn REPLACEMENT OF MEMORY IC 1. d) Adjust V LIN, to make data adjustment of vertical picture contents would be displayed on CRT. SERVICE ADJUSTMENT Specific operation: use memory IC written with the initial data, press [Program+] / [Program-] to select item INIT and press [VOLUME+] /...
.... 2. Press [Program+] / [Program-] to select items and press [VOLUME+] / [VOLUME-] key, to CRT horizontal centre. Press "EXIT" key to CRT vertical centre. com. This TV uses memory IC. PROCEDURE FOR REPLACING MEMORY IC (1) Power off Switch the power off and unplug the power cord...f i nepr i nt . cn REPLACEMENT OF MEMORY IC 1. d) Adjust V LIN, to make data adjustment of vertical picture contents would be displayed on CRT. SERVICE ADJUSTMENT Specific operation: use memory IC written with the initial data, press [Program+] / [Program-] to select item INIT and press [VOLUME+] /...