User manual ZENITH H27E35DT8 SERVICE MANUAL

[. . . ] SERVICE MANUAL Product Type: Chassis: Manual Series: Manual Part #: Model Line: Product Year: Commercial Directview TV CL SR24 923-03508 E 2002 Model Series: H20E35DT HPK20E35DT HW20E35DT H25E34Y H25E35DT HW25E35DT H25E39Y H27E35DT HPK27E35DT H27E35S H27E35DT8 H27E35S8 H32E35DT CONTENTS Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Published October 2002 by Technical Publications Zenith Electronics Corporation 201 James Record Road Huntsville, Alabama 35824-1513 Copyright Printed in U. S. A. 2002 by Zenith Electronics Corporation PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO-VIDEO PRODUCTS IMPORTANT SAFETY NOTICE This Manual was prepared for use only by properly trained audio-visual service technicians. When servicing this product, under no circumstances should the original design be modified or altered without permission from Zenith Electronics Corporation. All components should be replaced only with types identical to those in the original circuit and their physical location, wiring and lead dress must conform to original layout upon completion of repairs. [. . . ] In the Factory Menu, only the selected menu item is displayed, near the top of the screen. 1390 - 06 Microcontroller part number 1. 57 Program Revision 01 Font Revision 03HPos9 Factory Option Build Date 10/05/02 TE Status TE=10110000 In the Factory Menu, only the selected menu item is displayed, near the top of the screen. When the Factory Menu is on, the AC Power-On feature is always enabled regardless of the setting of AC ON in the Installer's Menu. Use the remote to reenter the Installer's Menu to turn the Factory Menu off. The Factory Mode may also be turned off by setting the clock, or running the Auto Program feature in the customer Set Up menu. 01 PRESET PX: Stores the video customer menu adjustments in the nonvolatile memory of the EAROM. Settings for Contrast, Brightness, Color and Tint are stored in this manner. 02 PRESET AX: Stores customer Audio menu adjustments in the nonvolatile memory of the EAROM. Settings for Bass, Treble, Balance and SoundRite are stored in this manner. 0 is custom and 1 is Preset stored. 1-7 is the length of time (in hours) that the set will continue to operate if unattended. When the set nears turn off time, an on-screen message appears telling you to press any key to continue normal viewing. 06 BAND/AFC: There are eight positions: 0 is Broadcast fixed 1 is CATV AFC 2 is HRC AFC 3 is ICC AFC 4 is Broadcast AFC 5 is CATV fixed 6 is HRC fixed 7 is ICC fixed SR24 - 923-03508 SERVICE MENU 18 SLEEP TIMER: Enables sleep timer key. This item is generally set to off so it can be controlled with entertainment unit. Set to one for operation with "Spectramate" systems from On Command Corporation. Set to 1 for operation to restore previous on/off state after TV is initially turned on. 0-1 Shows up and suppress channel preview screen in the function menu with some pay per view systems. 2-3 as the same like 0-1 respectively plus Show up and suppress Caption lock option in Caption menu. If its is 1 and Hospital Mode=0 or 2 the selected IR codes are Zenith, in another way the selected IR codes are Private. 26 RF BAND PASS: Sets adjustment range of the customer control for brightness in therefore mode. 27 RF BRT (RF brightness) Sets adjustment range of customer control for brightness in RF mode. 28 AUX BRT: (Auxiliary Brightness) Sets adjustment range of the customer control for brightness in AUX mode. 29 MAX CONTRAST: Sets adjustment range of customer control for contrast. 47 A VCO: Stereo VCO and Audio SAP VCO free running frecuency Adjustment. [. . . ] 3 +5V SB +5V SB B RM4201 1K B C Q4200 221-01310A E C Q4201 221-01310A E +4. 1 VSW +4. 1VSW +4. 1 VR +4. 1VR Sht. 3 RADIO/TV-SWITCH R4200 10K L4205 10µH C4250 100µF 16V H20E35DT H25E34Y H25E35DT H25E39Y H27E35DT HPK20E35DT HPK27E35DT HW20E35DT HW25E35DT H32E35DT B A SR24 - 923-03508 CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER "X" IN THEIR COMPONENT DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED. 6-9 ALL SYMBOLS WITH "M" ON END OF DESIGNATOR INDICATE SURFACE MOUNTED COMPONENT CL SHEET 9 AV Switch Circuit (20-27") 1 G +9V SWY C Q2901 E 0TR945009AA B RM2908 100 JM2901 0. 1 RM2905 10K C2932 390pF R2932 75 ZD2905 103-ZENER-PROV 1/2W Q2904 P/L E C2916 470µF 16V +9V SWY RM2928 C B JM2902 PROV RM2947 150 100 CM2928 220pF 50V W2934 W2933 +9V 5W CM2934 SMD-PROV +9V SW L2903 10µH +9V SWY 2 3 4 5 6 7 8 9 10 C2905 PROV C2906 100µF 16V 29 WF F Y-MAIN Y-MAIN CM2908 100pF 50V RM2909 150 RM2910 P/L Sht. 6 C-MAIN IC2900 221-1438 +9V SWC C Q2902 P/L E RM2913 150 RM2914 150 JM2904 0. 1 C2909 RM2912 10K B RM2911 100 4 LTV 5 TV 6 RTV C2910 10µF 50V 1/2W +9V SWF R2924 1K Q2906 0TR733009AA E RM2952 B 100 C RM2954 0. 1 DATA C-MAIN Sht. [. . . ]