SERVICE MANUAL Product Type: Chassis: Manual Series: Manual Part #: Model Line: Product Year: Model Series: Consumer Color TV XC CM152 923-03435 C 2000 C27C35T C27C35TF C27C41T C27C41TF C32C35T C32C35TF C32C41T C32C41TF C36C35T C36C35T8 C36C35TF C36C41T C36C41T8 C36C41TF C32C84R C32C86R C36C86R LGC29C35TM CONTENTS General Info/Remotes .................................... 1 Factory Menu ................................................ 2 Servicing/Troublshooting ...............................
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. $ & 9ROWPHWHU When servicing this product, under no circumstances should the original design be modified or altered without permission from Zenith Electronics Corporation.
PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO-VIDEO PRODUCTS The Zener Diode function is to keep a constant voltage on its terminals. Since the Zener is in series with the ICX2200 (see the figure below) a difference of voltage will appear on pin 29. So, if the voltage coming from the sweep is incremented drastically (as the HV does), the threshold voltage on pin 29 of ICX2200 should be reached and the TV set will turn off immediately.
PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO-VIDEO PRODUCTS SAFETY CIRCUIT TEST PROCEDURE Equipment required: a) K.V. DC meter (0 to 30 KV, high Z). b) Video Generator Before turning the TV on, connect the HV meter’s negative probe (-) to ground (DAG ground recommended) and the positive probe (+) in the anode of the CRT. Apply a video signal or tune the TV to a crosshatch pattern (either Lion or Convergence). Access the Video Menu and adjust Brightness and Contrast controls for minimum screen luminance.
TABLE OF CONTENTS SECTION 1 .................... OVERVIEW SECTION 4 ........................... PARTS OVERVIEW ..................................................... 1-1 INTRODUCTION ............................................... 1-1 REMOTES ....................................................... 1-2 MBR3457T REMOTE CONTROL ......................... 1-2 MBR3458T REMOTE CONTROL ......................... 1-3 REMOTE PROGRAMMING ................................ 1-4 PROGRAMMING CODES ..........................
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SECTION 1 OVERVIEW OVERVIEW ); . /; ,&; ,& 5 ); 7; ,& 7 * 0(18 &+ 83 '$* ,5 92/ ':1 &+ ':1 ,& 6: 6: 287 9&& *1' 6: 6: 21 2)) 6: 6: 92/ 83 . ( ,&; $ 4; & ( & % % & < :7 ) ,& 5 287 & ,&; : * 28 7 7[ ,& % 2 87 *1 ' )5217 -$&.
REMOTES MBR3457T REMOTE CONTROL 32:(5 7XUQV 79 2Q RU 2II )/$6+%.
MBR3458T REMOTE CONTROL 32:(5 )/$6+%.
REMOTE PROGRAMMING PROGRAMMING INSTRUCTIONS If you’re using Zenith products, the remote is already programmed for most common codes: TV = 101, VCR = 201, CABLE = 353, and AUX = 401. For other brands, or if your remote fails to control your Zenith products, you’ll have to program the remote. CABLE BOX This remote can control the cable/converter box volume and muting (instead of the TV’s) if available on your equipment. 1. Program the cable/converter box normally. 2.
REMOTE CODES TV Admiral 116, 121, 130, 133 Akai 104 Amark 103, 146 AOC 104 Bell & Howell 121 Broksonic 131, 136, 182 Candle 139 Centurion 119 Citizen 121, 139 Contec 141 Coronado 103 Crown 103 Curtis Mathis 116, 119, 121 Daewoo 149, 159 Daytron 119 Elektra 121 Emerson 103, 104, 123, 124, 131, 136, 145, 176 Fisher 109, 118 GE 106, 107, 114, 116, 117, 161 Audio CD ADC 940 ADO 939 Aiwa 938 Akai 409, 424, 937 Carver 510 Crown 410 Denon 411, 935 Dynatech 953
REMOTE CODES GE VCR Admiral Adventura Aiwa Akai 208, 261 231 231 223, 238, 241, 292, 717, 718, 719, 720 Audio 202, 206, 218, Dynamics 247, 726 Bell & Howell 206, 247 Broksonic 221, 226, 233, 250, 255, 729 Candle 727 Canon 214, 704 Capeheart 728 Citizen 209, 727 Craig 212 Criterion 239 Curtis Mathis 214, 259, 266, 725, 727 Daewoo 244, 246, 248, 254, 703, 729 Daytron 236, 246 DBX 202, 218, 726 Electrochrome 730 Emerson 203, 209, 221, 223, 226, 233, 235, 243, 250, 293, 721, 722, 729, 730, 731, 732 Fisher 211
REMOTE CODES Cable & Satellite Allegro 358, 362 Allegro A/B Switch 361 Hamlin 302, 303, 345, 365, 366 ProScan 510, 517 STS3 508 Hitachi 519, 520 Radio Shack 362 Teleview 326 Hughes 514 RCA 510, 517 Texscan 339, 356, 371 Jasco 325 RCA DSS 341, 373, 394 Tocom 317, 318, 346 Jerrold 304, 307, 308, 309, 310, 318, 360, 363 Realistic 506 Toshiba 509, 512 Regal 366 Toshiba DSS 391 Regency 329 Uniden 522 Samsung 326, 335 Unika 325, 348, 362 Scientific Atlanta 316, 323, 3
USER MENUS 905-10525 905-10525 USER MENUS SET UP MENU When a channel is selected with the Surf key, the channel will be marked in the SURF option or it can be selecting in the Setup Menu. The Setup Menu and all of the options for the XC Chassis are described below. AUTO PROGRAM To start the Auto Program, press the Left/Right arrow key. If the cable TV input type is selected, the Auto Program routines will determine what type of cable system is present.
905-10525 USER MENUS (continued) TIME SET Use the Up/Down arrow keys to adjust the clock the desired Time Set option. SET UP A B C D B D EZ PROGRAM EZ CLOCK ADD/DEL/SURF EZ CLOCK CAPTIONS CAPTION/TEXT LANGUAGE SOURCE/MENU CLOCK MODE TIME SET 12 : 00 AM PM FLSHBK MOVE MOVE MENU MENU BACK CAPTION TEXT This feature allows the customer to activate or deactivate Captions or Text.
905-10525 USER MENUS (continued) SET UP SOURCE MENU A A B C D B D EZ PROGRAM ADD/DEL/SURF EZ CLOCK CAPTIONS CAPTION/TEXT LANGUAGE SOURCE/MENU MOVE MENU MAIN MENU PIP SOURCE ANTENNA/CABLE VIDEO 1 VIDEO 2 ENGLISH SPANISH FRENCH BACK MOVE SOURCE MENU MENU BACK PIP SOURCE The selection of PIP Source determinates the signal that feeds the video processor. This feature allows select the PIP Source using Up/Down arrow keys. This menu has two items, Main Source and PIP Source.
905-10525 USER MENUS (continued) BRIGHTNESS For adjust this feature use Left/Right arrows keys. Note: If the program does not support Stereo, there the audio will reproduce in mono. SOUNDRITE The Sound Rite feature is used to obtain a uniform volume level, particularly while changing channels. The Sound Rite feature can be best demonstrated on a channel with no signal (snow). Use the Up/Down arrow key.
905-10525 USER MENUS (continued) LOCK ON/OFF This item turns the Parental Control feature On/Off. The Parental Control feature can only be turned on if the hours > 0, and a password has been set. Otherwise the Lock On/Off line will display either of the following error messages: (“Must Set Hours”) or (“Must Set Password”). CONTENT BLOCK Use the Left/Right arrow keys to select the Content Block Menu.
905-10525 USER MENUS (continued) SLEEP TIMER ON/OFF TIME The On/Off Time can be selected using the Up/Down keys. (Use volume down and volume up for 6-key keyboard). Pressing the TIMER key will increment the Sleep timer to 0:10 and restore all other key functions. Note: Both the On time and the Off time must be specified, before turning on the “On/Off Timer” - - otherwise an error message (“Must Set On/Off”) will be displayed on the displayed in the On/Off Timer line.
905-10525 USER MENUS (continued) PIP MENU All menu items are adjust with the Left/Right arrows keys, except the size menu. TINT PIP This item allows the PIP tint. Tint adjustment has 63 steps (0 to 63). SIZE PIP This option is used to select size of the PIP window. The customer may select the PIP window size either Large or Small. Use the Up/Down arrow keys to selecting.
905-10525 USER MENUS CHANNEL AND PIP DISPLAY The following display appears when the channel display and PIP is on. EZ TIMER EZ HELP SLEEP TIMER IF YOU DO NOT HAVE ANY ON TIME WATCHABLE CHANNELS OFF TIME 12 : 00 CH 60 MUTED CABLE TV AIR ANTENNA ON/OFF TIM. EZ PROGRAM PIP CH 2 MOVE MOVE MENU MENU BACK BACK ADD/DEL/SURF HELP This feature offers help for the programming of the channels. EZ HELP EZ TIMER SLEEP TIMER IF YOU WANT TO ADD OR ON TIME A DELETE CHANNEL OFF TIME 12 : 00 CH 9 ON/OFF TIM.
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SECTION 2 905-10525 FACTORY MENU at 15. FACTORY MENU ADJUSTMENTS To access the Factory Menu, press and hold the MENU key until the User Menu display disappears, then press 9876, and then ENTER to access the Factory Menu. 1485-00 1.05 01 Microcontroller part number Program Revision Font Revision 03 H Pos Build Date 02/15/00 03 H0RZ POS: Moves On-Screen Displays horizontally. Range is from 1-45. Generally set at 20. 04 FEATURE LEVEL: There are three positions: 0,1 and 2.
905-10525 FACTORY MENU (continued) 17 RED CUT: B&W tracking adjustment. Range is 0 to 254. Typical value is 0. 37 PIP V LEV: PIP auto gain controle. Range is 0 - 15 . Typical is 14. 18 GREEN CUT: B&W tracking adjustment. Range is 0254. Typical value is 0. 38 YOFSET: PIP luminance offset. Range is 0 - 3. Typical is 0. 19 BLUE CUT: B&W tracking adjustment. Range is 0-254. Typical value is 0. 39 PIP PLLITC: PIP PLL syncronization. Range is 0 - 3. Typical is 0. 20 GREEN GAIN: B&W tracking adjustment.
905-10525 FACTORY MENU (continued) ITEM 00 F MODE 01 PICTURE PREFERENCE 02 VERTICAL POSITION 03 HORIZONTAL POSITION 04 FEATURE LEVEL 05 TUNING BAND 06 POWER ONLY 07 RF SUB BRIGHTNESS 08 AUX SUB BRIGHTNESS 09 MAX CONTRAST 10 VERTICAL SIZE 11 HORIZONTAL SIZE 12 VERTICAL PHASE 13 HORIZONTAL PHASE 14 HORIZONTAL AFC 15 BAND PASS FILTER 16 TRAP 358 17 RED CUT OFF 18 GREEN CUT OFF 19 BLUE CUT OFF 20 GREEN GAIN 21 BLUE GAIN 22 SWITCH 60 HZ 23 WHITE COMPRESS 24 6 KEY SYSTEM 25 FRONT JACK 26 XTAL SELECT 27 SOUND ATT
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SECTION 3 SERVICING When troubleshooting video circuits, remember that all video travels through the PIP IC (if used) and the Video/Audio switcher IC. A defect in either of these IC’s can result in no video. GENERAL INFORMATION Servicing the XC chassis is the same as with other Zenith single-board chassis. If the set is dead, first check the standby and switched voltages. If the switched voltages do not appear, check the power “On” circuit.
SERVICING (continued) ADJUSTMENTS IF AND AUDIO SERVICING G2 ADJUSTMENT Use the following procedure when resetting G2. 1. Set brightness and contrast in Video Menu to mid range. 2. Set color level to minimum. 3. Connect output of an NTSC generator to the antenna input on the receiver. Select a color bar signal and turn chroma off. 4. Adjust G2 control so that bar patterns range from completely black to a “not overdriven” (not saturated) white.
SERVICING (continued) PURITY & CONVERGENCE SETUP PROCEDURE PRELIMINARY SETUP 1.Allow the receiver to warm up for 15 to 20 minutes. CONVERGENCE ADJUSTMENT 1.Release locking assembly. 2.Degauss the CRT. 2.Connect crosshatch generator to the receiver and adjust static (center) convergence as follows: 3.Connect a crosshatch generator to the receiver and “rough in” the static (center) convergence. Follow the Convergence Procedure. a.
SERVICING (continued) MODIFICATION 1.Place the magnet on the CRT funnel as shown in the figure displayed below, in the quadrant exhibiting impurity. VERTICAL-TILT WEDGE ADJUSTMENT The vertical lines at 6 and 12 o’clock are converged by vertically tilting the yoke and inserting a wedge at the top of the yoke until it is firmly seated between the CRT glass and the horizontal coils. 2.Rotate the magnet in place to the position shown for best purity.
SECTION 4 MODEL PARTS MODEL PARTS C27C41TF C27C35T 049-01368-03 Speaker, Oval, 6 X 13 cm 049-01368-03 Speaker, Oval, 6 X 13 cm 050-02576-05 Connector & Cable Assy, 2.5mm, 4 Contact, 1 Up 050-02576-05 Connector & Cable Assy, 2.
MODEL PARTS (continued) 992-10035 Lens, IR 197-00180-01 Cup, Cabinet Back 901-10005 Addendum, Operation Guide 206-3603 Instruction Book, Operation Guide 901-10006 Instr Book, Operation Guide (French) A-17985-17 Cable and Connector Assembly A-19107 Crt & Yoke Assy, A81AGZ50X02ZN 814-10140 Cover, Back, 32" Traditional 814-10128 Cabinet, Main Assy F-53908 Line Cord Assy F-53918 Gnd Strap Assy F-53919 Keyboard Assy F-53921 Detector/Amp F-53937 Connector & Cable 812-10110 Cover, Jack
MODEL PARTS (continued) C36C35TF C36C41T 009-02169 Module, Main with 1 PIP, 6 Jacks & Keyboard, MTS, Digital Comb Inv 009-02170 Module, Main with 2 PIP, 6 Jacks & Keyboard, MTS, Digital Comb Inv 049-01368-03 Speaker, Oval, 6 X 13 cm 049-01368-03 Speaker, Oval, 6 X 13 cm 050-02576 Connector & Cable Assy, 2.5mm, 4 Contact, 1 Up 050-02576 Connector & Cable Assy, 2.
MODEL PARTS (continued) LGC29C35TM C36C41T8 009-02170-01 Module, Main 36V, 2 Pip, 6 Jack & Keyboard, MTS,Digital Comb 049-01368-03 Speaker, Oval, 6 X 13 cm 050-02576-05 Connector & Cable Assy, 2.5mm, 4 Contact, 1 Up 020-04330-34 Coil, Degausser 924-10084 Space Command Transmitter, MBR3457T 049-01368-03 Speaker, Oval, 6 X 13 cm A-14323 Balun Assembly 050-02361 Connector and Cable Assembly, 35V Ctv Yoke A-18681-01 Line Cord Assy with Yeonho Connector 050-02576 Connector & Cable Assy, 2.
COMPONENT PARTS LIST COMPONENT PARTS LIST REFERENCE CHART The following information is for models in and out of warranty. The XC models are component level repair.
COMPONENT PARTS COMPONENT PARTS LIST SEE REFERENCE CHART ON PAGE 5 NOTE: This list will enable you to easily determine the parts used on each Model, Chassis, or Assembly.
COMPONENT PARTS LIST SEE REFERENCE CHART ON PAGE 5 NOTE: This list will enable you to easily determine the parts used on each Model, Chassis, or Assembly.
COMPONENT PARTS LIST SEE REFERENCE CHART ON PAGE 5 NOTE: This list will enable you to easily determine the parts used on each Model, Chassis, or Assembly.
COMPONENT PARTS LIST SEE REFERENCE CHART ON PAGE 5 NOTE: This list will enable you to easily determine the parts used on each Model, Chassis, or Assembly.
COMPONENT PARTS LIST SEE REFERENCE CHART ON PAGE 5 NOTE: This list will enable you to easily determine the parts used on each Model, Chassis, or Assembly.
COMPONENT PARTS LIST SEE REFERENCE CHART ON PAGE 5 NOTE: This list will enable you to easily determine the parts used on each Model, Chassis, or Assembly.
COMPONENT PARTS LIST SEE REFERENCE CHART ON PAGE 5 NOTE: This list will enable you to easily determine the parts used on each Model, Chassis, or Assembly.
COMPONENT PARTS LIST SEE REFERENCE CHART ON PAGE 5 NOTE: This list will enable you to easily determine the parts used on each Model, Chassis, or Assembly.
SECTION 5 27V Table Top Exploded View REF 1 2 3 4 5 6 7 8 DESCRIPTION FRONT CABINET SPEAKER KEYBORD IR LENS CRT & YOKE ASSEMBLY REAR CABINET MAIN MODULE REMOTE CONTROL 2 C27C35T(F) 814-10121 049-01368-03 846-10017 992-10035 A-19112 814-10122 C27C41T 814-10121 049-01368-03 846-10017 992-10035 A-19112 814-10122 COMPONENT LEVEL REPAIR COMPONENT LEVEL REPAIR 924-10084 924-10085 3 4 5 6 1 8 7 CM152 5-1 0%5 7 0%5 7 XC - EXPLODED VIEWS
32V Table Top Exploded View REF 1 2 3 4 5 6 7 8 DESCRIPTION FRONT CABINET SPEAKER KEYBORD IR LENS CRT & YOKE ASSEMBLY REAR CABINET MAIN MODULE REMOTE CONTROL C32C35T(F) 814-10123 049-01368-03 846-10017 992-10035 A-19276 814-10124 009-02167 924-10084 2 C32C41T(F) 814-10123 049-01368-03 846-10017 992-10035 A-19276 814-10124 009-02168 924-10085 4 3 6 5 1 8 7 CM152 5-2 0%5 7 0%5 7 XC - EXPLODED VIEWS
36V Table Top Exploded View REF 1 2 3 4 5 6 7 8 DESCRIPTION FRONT CABINET SPEAKER KEYBORD IR LENS CRT & YOKE ASSEMBLY REAR CABINET MAIN MODULE REMOTE CONTROL C36C35T(F) 814-10125 049-01368-03 846-10017 992-10035 A-18483 814-10126 009-02169 924-10084 2 C36C35T8 814-10125 049-01368-03 846-10017 992-10035 A-18483 814-10126 009-02169-01 924-10084 3 C36C41T(F) 814-10125 049-01368-03 846-10017 992-10035 A-18483 814-10126 009-02170 924-10085 C36C41T8 814-10125 049-01368-03 846-10017 992-10035 A-18483 814-1
32V Traditional Console Exploded View REF 1 2 3 4 5 6 7 DESCRIPTION ESCUTCHEON MAIN CABINET SPEAKER CRT & YOKE ASSEMBLY REAR COVER MAIN MODULE REMOTE CONTROL C32C84R 057-9069-27 814-10128 049-01257-08 A-19107 814-10140 009-02168-01A 924-10085 0%5 7 CM152 5-4 XC - EXPLODED VIEWS
32/36V Contemporary Exploded View REF 1 2 3 4 5 6 7 DESCRIPTION ESCUTCHEON MAIN CABINET SPEAKER CRT & YOKE ASSEMBLY REAR COVER MAIN MODULE REMOTE CONTROL C32C86R 057-09069-28 814-10129 049-01257-08 A-19107 814-10141 009-02168-01A 924-10085 C36C86R 057-09079-04 814-10130 049-01257-08 A-18639 814-10142 009-02170-01A 924-10085 0%5 7 CM152 5-5 XC - EXPLODED VIEWS
SECTION 6 1 Interconnect Diagram 2 3 4 5 6 7 8 9 10 G * 2 8 7 * 1 ' % 2 8 7 5 2 8 7 0(18 &+ 83 &+ ':1 6: 6: 6: ,5 92 / ':1 7 82 &&9 '1* 6: 92/ 83 6: 21 2)) 6: . F ,& E )5217 -$&. &57 <& 9,'(2 5,*+7 /()7 ); .
Power Supply 1 G 2 3 4 7 5 6 7 9 9 7+; 7 + ; 72 ' ( *$ 8 6 6 ( 5 9 9 $ 7+; $ ' ; 3$& .$*( & 5 % '(* &75/ .
Audio Processor 1 2 3 4 5 6 7 8 9 10 G 5 X) 9 & %$66/ %$66/ 75( 5 %$665 9 75( / %$665 6855,1 68557& 6855287 79287 / /6287 5 79287 5 /6287 / $8; / $8; 5 1& $8; / 6'$ & 0 F 9 & 0 9 & 0 E 6+7 /()7 6: 6+7 5,*+7 6: 9 & 0 & 0 S) 9 & 0 & X) 9 & X) 9 5 0 .
Main Processor 1 2 3 4 G . X6 6+7 5 0 )/< %$&. 6+7 . 5 0 & 0 ( S) 9 9(57 '5,9( 6+7 $ & % . 10 6+7 B( . 5 0 & 0 ( 9 P6 S) 9 +25= 6, = ( 6+7 & &57 352 7(&725 & 0 3 ,1 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 S) 9 S) 9 & 0 & 0 S) 9 S) 9 .
Video Processor 1 2 3 4 5 6 G ,&; 6+7 6+7 $ 6(( 6+ ((7 1 R &203 $8' 5 0 F . & 0 5 0 . % & 0 ,) 5 0 5 0 S ) 5 0 9 & % 5 0 E % ( 5 0 . % 9 & % 6+7 & 6+7 & S) 9 )%/. 3,3 5 0 .
Horizontal/Vertical Deflection 1 2 3 4 5 6 7 8 9 10 G +25= 6,=( 6+7 ) < F 72 <2.( 9 21/< 5; : 3 / : 5 3 / : &; 3 / 9 '; 3 / &; 9 9 &; 9 &; &; 3 / .9 '; .
Jack and Switch Circuit 1 G 6+7 % 2 3 9 6:) % 4 $ & 0 3529 & % 5 0 % ( 5 0 & 0 3529 5 0 $ . 5 0 N E & 0 (;7 / . & 0 X) 9 5 0 & =' 9 5 =' 9 5 =' 9 < & 9& X) 9 & X) 9 $ & 0 5 0 & < 5 $ 5 0 9 5 X) 9 5 & X) 9 .
Video Ouput 1 2 3 4 5 6 7 8 9 10 G :) 9 86 F 9 '& ) 96: 5 5 . : & 5 0 X) . E 9 & X) : 5 Red Drive * Green Drive % Blue Drive 9 . / 5 % X+ ,& :) 9 7'$ 4 9, D S) 9 & & 5 0 5 5 C * % & 0 S) * 5 '$* 92& * 92& .9 . / : . : 5 3 / 5; .
Comb Filter Module 1 2 3 4 5 6 7 8 9 10 G 9 6:$ F ,& 9 6:$ & 0 $966 $9'' / 5 0 X+ S) 9 E & 0 5 0 . 4 $ 5 0 % X+ . & 0 3529 9 6:) / 5 0 & 0 S) X) & 0 S) 5 0 . D & 0 & X) ( & X) 9 5 0 .
PIP Module 1 2 3 4 5 6 7 8 9 10 G / F 6+7 B* 6+7 B% 6+7 B% 5 )/<%$&. 4 $ ( & 0 4 $ 6+7 95$035 0 % S) 9 $ E & 0 9 $ 6+7 B% 6+7 B$ 6+7 B% 6+7 B& 6+7 B& 6+7 B$ 6+7 B$ 6+7 B& 6'$ $ 5 0 .
PCB Layout : & F 5 & ,& 5 5 5 / 5 : ' $ * & 5 ) 5 ' 3 87 (6 D : : 7 C : : & % & % ( & &, & 8 ( & 9 7 8 2 : ' & 5 5 & & 4 4 ( / & % : / / 5 : ( % 9 & ( : :
SMD Layout 5 ; ,&; 5; '; A A A A A '; & 5; : & % 4( ; & 7; 5 ; + 4 * 5 5; 5 ; ,&; 5; 0 5 5 0 & & 5 0 5& 00 ' 5 5 0 5 % 0 5 ( '; 5; : & 4 5 CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X“ IN THEIR COMPONENT DESIGNATORS.
