SERVICE MANUAL Product Type: Chassis: Manual Series: Manual Part #: Model Line: Product Year: Model Series: ZLD15A1 LCD TV ZLD CM153 923-03443R1 D 2001 ZLD20A1 CONTENTS General Info/Remotes .................................... 1 Installer’s Menu ............................................. 2 Servicing/Troublshooting ............................... 3 Module/Model Part Lists ................................. 4 Exploded Views ............................................. 5 Schematics/PCB Layouts .........
PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO-VIDEO PRODUCTS IMPORTANT SAFETY NOTICE This manual was prepared for use only by properly trained audiovisual service technicians. When servicing this product, under no circumstances should the original design be modified or altered without permission from Zenith Electronics Corporation.
TABLE OF CONTENTS TABLE OF CONTENTS .............................................. 2 SERVICING PRECAUTIONS ....................................... 3 ADJUSTMENTS ..................................................... 5 TROUBLE SHOOTING .............................................. 7 PARTS LIST .......................................................... 8 EXPLODED VIEW ................................................... 14 BLOCK DIAGRAM ..................................................
SERVICING 9. Use with this receiver only the test fixtures specified in this service manual. CAUTION: Do not connect the test fixture ground strap to any heatsink in this receiver. SERVICING PRECAUTIONS CAUTION: Before servicing receivers covered by this service manual and its supplements and addenda, read and follow the SAFETY PRECAUTIONS on page 3 of this publication.
SERVICING GENERAL SOLDERING GUIDELINES 1. Use a grounded-tip, low-wattage soldering iron and appropriate tip size and shape that will maintain tip temperature within the range or 500cF to 600cF. 2. Use an appropriate gauge of RMA resin-core solder composed of 60 parts tin/40 parts lead. 3. Keep the soldering iron tip clean and well tinned. 4. Thoroughly clean the surfaces to be soldered. Use a mall wire bristle (0.5 inch, or 1.25cm) brush with a metal handle. Do not use freon-propelled spray-on cleaners. 5.
SERVICING 3. Solder the connections. CAUTION: Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures. CIRCUIT BOARD FOIL REPAIR Excessive heat applied to the copper foil of any printed circuit board will weaken the adhesive that bonds the foil to the circuit board causing the foil to separate from or “lift-off” the board.
SECTION 1 OVERVIEW SERVICING USING METHOD FOR CA-110 ADJUSTMENTS This set uses an adapter, so connect the adapter and the set correctly before adjustment. The adjustment must be performed under the correct sequence. The adjustment must be performed in the circumstance of 25+/-5cC of temperature 65+/-10% of relative humidity if there is no specific designation. The input voltage of the receiver must keep 220V, 60Hz in adjusting.
ADJUSTMENT INSTRUCTIONS ZLD15A1 1. Application Object Low Light(Black) This instruction is for the application to the LCD TV. 2. Notes Unit-Decimal IC IIC Type Name Default Adj. Mode VPC3230D IIC 0x52/7:0/ BR 0 No.304 2930 No.236~237 0 No.248 VPC3230D IIC 0x30/11:0/ ACC_Sat (1) This set uses an adapter, so connect the adapter and the set correctly before adjusting. (2) The adjustment must be performed in the correct sequence.
4-4. Position of Mode Adjustment Timing of Mode Table Mode VGA-60 VGA-67 VGA-72 VGA-75 VGA-85 TEXT-70 SVGA-56 SVGA-60 SVGA-72 H_Total 800 864 832 840 832 900 1024 1056 1040 H_Display 640 640 656 640 640 720 800 800 800 H_Blanking 160 224 176 200 192 180 224 256 240 64 56 108 72 128 120 H_Sync 96 64 40 HPolarity NEG. NEG. NEG. NEG. NEG. NEG.
TROUBLE SHOOTING 1. General Features No. Problem Possible Cause Solution 1 Soft touch doesn't function properly Defective speaker wire and inverter wire 1) Make some space between the speaker wire and the Soft touch Board by sticking the speaker wire to the guide hole of the cabinet. 2) Arrange working state of A1. Tape in the inverter wire and correct working state of the Shield case.
COMPONENT PARTS PARTS LIST ZLD15A1 NOTE: This list will enable you to easily determine the parts used on each Model, Chassis, or Assembly.
300 120 121 310 112 550 500 CM153 430 540 521 943 541 420 400 410 ZLD15A1 EXPLODED VIEW 12 ZLD15A1
MODEL PARTS ZLD20A1 PARTS ZLD20A1 Location 1 2 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 19 20 21 22 23 24 25 26 27 28 29 Part Number 804-10107 849-10045 809-10661 814-10196 849-10048 895-10137 811-10044 836-10003 857-10362 836-10002 959-10110 809-10659 900-10059 895-10136 809-10658 809-10657 804-10106 849-10046 809-10660 814-10195 849-10047 Part of 28 Part of 28 Part of 28 Part of 28 Part of 28 Part of 28 812-10155 814-10197 CM153 - 923-03443R1 Description CASE,SPEAKER SPEAKER, GENERAL LEFT SPKR BRD SPE
ZLD20A1 DIAGRAMS EXPLODED VIEW 13 14 5 1 15 3 6 4 12 2 7 8 21 11 16 17 20 29 10 9 18 19 28 25 24 26 22 27 23 CM153 - 923-03443R1 14 ZLD20A1 - DIAGRAMS
ZLD20A1 DIAGRAMS WIRING DIAGRAM MAIN P201B CN1 P803B SC801 0 1B P0 S/P LEAD TIES S/P LEAD BAND HOLDER CN1 CONTROL, POWER SPEAKER LEAD HOLDER CM153 - 923-03443R1 0 1B P0 15 ZLD20A1 - DIAGRAMS
ZLD15A1 DIAGRAMS BLOCK DIAGRAM Ext _Video Ext _Y/C DVD Y/Pb/Pr CVBS Tuner & IF SIF - 6700VNF003C For TV . Contrast . Brightness . Color .
ZLD15A1 PCB Main (Top) MAIN(TOP) CM153 - 923-03443R1 17 ZLD15A1 - DIAGRAMS
ZLD15A1 PCB Control & Tuner CTL(TOP) CTL(BOTTOM) TUNER(TOP) TUNER(BOTTOM) CM153 - 923-03443R1 18 ZLD15A1 - DIAGRAMS
ZLD20A1 DIAGRAMS BLOCK DIAGRAM EEP EEP ROM ROM L C 2 0 1 V 1 A 3 3.3V 3.3V 5V(FOR RESET IC 3,3V) 3.3V 3.3V 5V VIDEO RAM 2M 5V SCL1/SDA1 SCL/SDA SCALER(Format Converter) MX88L-284FC-V 14.318MHz R/G/B 9V 5.0V Audio Processor MSP-34XX RF : 2, SCART : 4 MONO : 1 I2S : 2 ------18.
ZLD20A1 PCB LAYOUTS MAIN PCB LAYOUT CM153 - 923-03443R1 20 ZLD20A1 - PCBS
ZLD20A1 PCB LAYOUTS MX PCB LAYOUT MX(TOP) MX(BOTTOM) CM153 - 923-03443R1 21 ZLD20A1 - PCBS
ZLD20A1 PCB LAYOUTS CONTROL PANEL PCB LAYOUT CONTROL(TOP) CONTROL(BOT TOM) SPEAKER CONNECT PCB LAYOUT SPEAKER( TOP) SPEAKER(BOT TOM) CM153 - 923-03443R1 22 ZLD20A1 - PCBS
