User manual ACER AW2000H-AW170HD

[. . . ] Assembly and Disassembly Procedures-----------------------------------------------------------12 05. Troubleshooting----------------------------------------------------------------------------------------20 06. Schematics and Layouts------------------------------------------------------------------------------ 31 Appendix I : User's Manual Appendix II : Spare Parts Llist Safety Notice Any person attempting to service this chassis must familarize with the chassis and be aware of the necessary safety precautions to be used when serving electronic equipment containing high voltage. Published by LITE-ON Service Printed in Taiwan © All rights reserved Subject to modification 21th-Nov-2007 Important Safety Notice ACER P243W 1 Go to cover page Product Anouncement: This product is certificated to meet RoHS Directive and Lead-Free produced definition. Using approved critical components only is recommended when the situation to replace defective parts. [. . . ] Inrush current is measured at an ambient temperature of 25oC, with the unit temperature stabilized in the power-off. The power supply shall be damaged when switched ON for one second and OFF for one second for seven consecutive after operating for one hour at full load, 25oC, and nominal input line voltage. The power supply shall contain protection circuitry such that the application of an input voltage below the minimum specified in this table shall not cause damage to the power supply unit nor cause failure of the input. The power supply shall operate within IEC 801-4 (± 1KV) and IEC 801-5 (± 2KV) for the domestic U. S. The UPS power supply shall operate and comply with CE mark. 1. 4. 2 Panel Timings The controller included with the monitor shall translate all video timings from the CPU that meet the timing requirements listed in Panel specification into timings appropriate for the panel. Under no circumstances may the controller supply the panel with timings that may result in damage. The controller shall insulate the panel from the CPU , so that the panel shall always be driven per it's own specification regardless of the timings being sent from the CPU. 1. 4. 3 Polarizer Hardness The outer face of the front polarizer panel shall be covered with a coating with a # 3 hardness value . 1. 4. 4 Backlight Requirements 1. 4. 4. 1 General Requirements The backlight assembly shall be designed to support field replacement at the customer site or authorized service center. The lamps shall have a continuous operating life of at least 40, 000 hours at 25. The operating life is defined as having ended when the illumination of light has reached 50% of the initial value. Defects not apparent within one minute shall be ignored. 1. 4. 5. 5 Defect Terminology Table 3 gives the descriptive terms used in classifying defects. Average Diameter smaller of (L+W)/2 or L/20+2W Acceptable Number Minimum Separation D a rk / S p o ts / L in e s S p o ts o r lin e s th a t a p p e a r d a rk in th e d is p la y p a tte rn s a n d a re u s u a lly th e re s u lt o f c o n ta m in a tio n . D e fe c ts d o n o t v a ry in s iz e o r in te n s ity (c o n tra s t) w h e n c o n tra s t v o lta g e is v a rie d . C o n tra s t v a ria tio n c a n b e a c h ie v e d th ro u g h th e u s e o f v a ry in g g ra y s h a d e p a tte rn s . S p o ts o r lin e s th a t a p p e a r lig h t in th e d is p la y p a tte rn s . D e fe c ts d o n o t v a ry in s iz e o r in te n s ity (c o n tra s t) w h e n c o n tra s t v o lta g e is v a rie d . C o n tra s t v a ria tio n c a n b e a c h ie v e d th ro u g h th e u s e o f v a ry in g g ra y s h a d e p a tte rn s . W h e n th e u n it lig h ts , lin e s a p p e a r lig h t (w h ite ) w ith d is p la y p a tte rn s d a rk a n d d o n o t v a ry in s iz e . P h y s ic a l d a m a g e to th e p o la riz e r th a t d o e s n o t d a m a g e th e g la s s W h e n th e u n it lig h ts , s p o ts a p p e a r lig h t (w h ite ) w ith d is p la y p a tte rn s d a rk a n d d o n o t v a ry in s iz e . P h y s ic a l d a m a g e to th e p o la riz e r th a t d o e s n o t d a m a g e th e g la s s . H o riz o n ta l o r d ia g o n a l lin e s th a t a p p e a r g ra y w ith th e d is p la y p a tte rn s d a rk a n d m a y h a v e re s u lte d fro m a n " o u t o f c o n tro l" ru b b in g p ro c e s s o n th e p o ly im id e o r " w a v e s " o n th e B E F s o r p ris m s h e e ts . T h e " ra in b o w " e ffe c t c a u s e d b y n o n -u n ifo rm c e ll th ic k n e s s . [. . . ] Troubleshooting (continued) ACER P243W 25 Go to cover page 5. 6 Abnormal Plug and Play Operation 5. 6. 1 Abnormal DDC2 (D-SUB) Failure Point Confirm the output of serial data on I312 pin6 synchronize SCLK at TTL level NG I312 is defected OK Failure Point 1. The host machine isn't communicating in DDC2 mode. The video cable may have defected or may not be established connection for DDC. The I312 pin6 and P304 pin15 may have no signal or incorrect. [. . . ]