When servicing this product, under no circum- stances should the original design be modified or altered without permission from Zenith Elec- tronics Corporation. All components should be replaced only with types identical to those in...
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PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO-VIDEO PRODUCTS X-RADIATION flection. If the shutdown condition disappears, the TV set can be turned-on only if the AC is interrupted for about 20 Seconds and then the To prevent possible exposure to X-Radiation caused on/off switch is activated.
INSTALLER MENU INSTALLER MENU 2-I. AC ON (AC Power Switchable) Allows the TV to turn ON just by applying AC Use the Installer Menu to set up or change op- power. Pressing the POWER button is not neces- erational settings. See descriptions of the In- sary.
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0, which provides full range 20-I. FEATURE LEVEL of volume control. It may be best to set the Default set to ZEN 1 for Zenith IR remote con- same value on every TV. trol operation. Set O, P LBL for Zenith Private NOTE: The minimum volume level cannot have a Label IR remote control operation.
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INSTALLER MENU Note: If set to 0, Auto program is locked; (as 45-I. NOT USED shown on Setup menu) channel search is not avail- able. 46-I. STRT AUX SRCE (Starting Aux Source) Sets the starting AUX source. 29-I. OLD OCV (On Command VideoTM) 47-I.
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INSTALLER MENU 68-I. BCK. SRC. M. (Source Menu Background Color) 58-I. FOR. AUDIO. COL. (Audio Menu Foreground Color) Set according to Color Chart. Set according to Color Chart. 0 = Black 3 = Yellow 6 = Cyan 0 = Black 3 = Yellow 6 = Cyan 1 = Red...
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INSTALLER MENU 97-I. NOT USED 80-I. UPN MSB-2 User programmable number, most significant byte- 2 readable by M.P.I. command. (SN-HIGH) 98-I. NOT USED 81-I. UPN LSB 99-I. NOT USED User programmable number, least significant byte readable by M.P.I. command. (SN-LOW) 100-I.
FACTORY MENU 006-F G2 ADJUST: DETAILED DESCRIPTIONS OF FACTORY MENU Max value of 254d and default value of 127d. It is required to adjust the ITEMS cutoff level when the horizontal line becomes visible at center of screen during G2 adjust- 000-F FACT MENU: Use the Select key to select ment.
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FACTORY MENU 020-F GDRIVE 037-F LTIMODE AUX: Luminance transient im- G channel drive gain control. Range: 0- 63, 0H = -4.2 dB, 29H = 0 dB, 3FH = +2.1 dB. provement for aux video inputs. Default value Fixed value. in 1. 021-F BDRIVE B channel drive gain control.
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FACTORY MENU 076-F V_LIN: 054-F SHPF0: Sharpness fo setting. 3= 3Mhz @ Vertical linearity adjustment. Range: 0- 15, Initial value: 07. Normal mode 077-F V_S_CORRECTION: 055-F BLKOFF: Blanking ON/OFF SW when AKBOFF=1 Vertical S correction. Range: 0-15, Initial value: 5. Default value is 0.
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FACTORY MENU 115-F HUEM: Tint control for NTSC signals. 094-F AFC_COMP: HV fluctuation compensation amount setting for H position. Range: 0-7, Ini- tial value: 0. 116-F AGCMDM: AGC behavior can be chosen from four possible modes. 095-F APC-MODE 117-F AGCADJ1M: Automatic gain adjustment ADC1.
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FACTORY MENU 138-F READM: Read mode master channel. 0=Read- 161-F VERWIDTHM_H: Default value is 1. ings A and B fields. 162-F VERWIDTHM_L: Vertical picture width. De- 139-F RDPOSYM: Vertical read position. fault value is 31. 140-F RSHIFTM: Raster shift master. 1=Enable. 163-F PKCTIBPM AUX: Band pass Peaking factor for CTI of Aux video inputs.
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FACTORY MENU 181-F GCMON: Progressive picture improvement. 205-F VOUTPOL: Vertical output polarity. 0=high 0=off. active. 182-F HSPPL: H sync shift. Default value is 0 206-F BLANPOL: Blank polarity. 0=high active. 183-F VSLPF: V sync shift. Default value is 0 207-F VBLANDEL_95: Vertical delay in lines from in v sync.
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FACTORY MENU 006-F MAX COLOR: Max value of 63d and default 227-F R-CUTOFF NTSC: Red cutoff control is used value of 55d for 27" and 47d for 32". This value to adjust cut-off voltage at the cathode. Range: is used in one formula to limit the maximum color 0-255d.
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FACTORY MENU 079-F USATADJ: U saturation adjustment. Default 060-F AC BLK LEV SVGA: Black level for AC cou- value is 40d. pling with 3bit DAC. Default value is 0. 080-F VSATADJ: V saturation adjustment. Default 061-F BRI SVGA: Default value is 1 (internal value is 42d.
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FACTORY MENU 110-F LTILEV_YC: Luminance signal edge enhance- 099-F R-CUTOFF Y PrPb: Red cutoff control is ment setting for S-Video inputs. Range: 0-3, 0 = used to adjust cut-off voltage at the cathode. OFF, 1 = Low, 2 = Medium (default value), 3 = Range: 0-255d.
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CIRCUIT OVERVIEW BASIC CIRCUIT THEORY SWITCHED POWER SUPPLY START UP The voltage output of the rectifier BRX3400 (+V1 150VDC) is supplied to POWER SUPPLY DEFINITION the Main Switch Mode Regulator Power The Power Supply uses a COLD chassis Supply (SMPS). and is a single sided circuit board The Main SMPS consists of ICX3670, that has been developed for screen sizes...
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CIRCUIT OVERVIEW When QX3204 is turned off some of this energy is stored in TX3200 and rapid energy is returned to charge the S- turn off of QX3204 is initiated. Dur- capacitor(s) CX3209, CX3208, and CX3210. ing Q3203 off time, the energy previ- After several cycles (repeating at scan- ously stored in TX3200 is used to drive ning frequency) sufficient voltage ap-...
SERVICING PURITY ADJUSTMENT the neck of the CRT (in a 45° arc) from the top-dead center position to con- 1. Purity tab positioning. Set the 2 verge the red and blue lines verti- pole purity tabs together in the 3 or 9 cally.
SERVICING HORIZONTAL-TILT WEDGE ADJUST- positions and secure each wedge with a piece of tape, as described above. MENT The vertical lines at 3 o’clock and 9 IMPROVING CRT CORNER PURITY o’clock are converged by horizontally CRTs that display corner purity prob- tilting the yoke and inserting a lems even after following the service wedge.
SERVICING is selected as default input.) The rear VIDEO OUTPUT AMP IC jack pack includes one set of audio IC5121, IC5141 and IC5161 consists of jacks for the S-Video, another set of one monolithic video output amplifier. audio jacks for the Aux. Video input, called transadmittance- and a third pair for the RGB Computer...
SERVICING SIGNALS and 37 (IN1_V/L2) and the H, V SYNC – FRONT (comes from front jack pack) at Three types of signals, ATSC, NTSC and pins 44 (IN2_H/L1) and 45 (IN2_V/L2) SVGA, are processed in the set. The to be switched in itself. The ICM2200 ATSC signals are down converted to NTSC (CXA2150Q, I2C bus supported) is a bi- signals and it are processed as com-...
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SERVICING In the output stage the nominal input The core of the Red amplifier is IC5121. signal will be amplified to provide a This IC is an operational amplifier, 4.6V output color signal configured as an inverting amplifier. At maximum contrast and maximum gain The inverting input is on pin 2 and the settings.
MODEL PARTS MODEL: H27H49S MODEL: H27H49S PART NUMBER DESCRIPTION PART NUMBER DESCRIPTION 0CB10212474 Capacitor,Film,DIP 0CE476DK618 Capacitor,AL,Radial 0CC0800K115 Capacitor,Ceramic,Radial 0CE476DR618 Capacitor,AL,Radial 0CC100CK41A Capacitor,Ceramic,Chip 0CE476EU61A Capacitor,AL,Radial 0CC101CK41A Capacitor,Ceramic,Chip 0CE476SF6DC Capacitor,AL,Chip 0CC101DR41A Capacitor,Unclassified 0CE476VF6DC Capacitor,AL,Chip 0CC1020K405 Capacitor,Unclassified 0CE477BH618 Capacitor,AL,Radial 0CC102CK41A Capacitor,Ceramic,Chip 0CE477DD618 Capacitor,AL,Radial 0CC200CK41A Capacitor,Ceramic,Chip 0CE477DH618...
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MODEL PARTS MODEL: H27H49S MODEL: H27H49S PART NUMBER DESCRIPTION PART NUMBER DESCRIPTION 0DZ910009AJ Diode,Zener 0RD0472F609 Resistor,Carbon Film 0FS5001B51D Fuse, Time Delay 0RD0752F609 Resistor,Carbon Film 0IAL241610B IC, Atmel 0RD1000F609 Resistor,Carbon Film 0IAL242561B IC, Eeprom 0RD1001F609 Resistor,Carbon Film 0ICTMFA001A IC, Voltage Regulator 0RD1001H609 Resistor,Carbon Film 0ICTMMI060A...
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MODEL PARTS MODEL: H27H49S MODEL: H27H49S PART NUMBER DESCRIPTION PART NUMBER DESCRIPTION 0RN6201F409 Resistor,Metal Film 181-009V Capacito, Drawing 0RN6801F409 Resistor,Metal Film 181-010E Capacitor,Film,DIP 0RN7501G409 Resistor,Metal Film 181-010G Capacitor,Film,DIP 0RRZVTA001B Resistor,Array 181-010H Capacitor,Film,DIP 0RS0101H609 Resistor,Metal Oxide Film 181-013U Capacitor,Film,DIP 0RS0101K607 Resistor,Metal Oxide Film 181-014N Capacitor,Film,DIP 0RS0121K607...
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MODEL PARTS MODEL: H27H49S MODEL: H32H49S PART NUMBER DESCRIPTION PART NUMBER DESCRIPTION 6200C000028 Filter,Unclassified 0CE107DF618 Capacitor,AL,Radial 6201V00002A Filtes Assembly 0CE107DH618 Capacitor,AL,Radial 6204B62705A Oscillator, Crystal 0CE107DJ618 Capacitor,AL,Radial 6210TCE001A Filter, Bead 0CE107DK618 Capacitor,AL,Radial 6210VH0001A Filter,Ferrite Core 0CE107SF6DC Capacitor,AL,Chip 6212AA2984B Crystal 0CE108BJ618 Capacitor,AL,Radial 6212AA2988A Resonator, Crystal 0CE108DD618...
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MODEL PARTS MODEL: H32H49S MODEL: H32H49S PART NUMBER DESCRIPTION PART NUMBER DESCRIPTION 0CK47101515 Capacitor,Ceramic,Radial 0IMCRMN029B IC,Unclassified 0CK56101515 Capacitor,Ceramic,Radial 0IMCRMZ001A IC,DC,DC Converter 0CN1020K519 Capacitor,Ceramic,Axial 0IMCRSG010A IC, Transceiver 0CN1030F679 Capacitor,Ceramic,Axial 0IMCRSG011A IC,Voltage Regulator 0CN6810K519 Capacitor,Ceramic,Axial 0IMCRSJ001B IC, LDO Voltage Regulator 0CQ1032K439 Capacitor,Film,DIP 0IMCRSO007A IC, Micro Controller 0CQ1041N509...
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MODEL PARTS MODEL: H32H49S MODEL: H32H49S PART NUMBER DESCRIPTION PART NUMBER DESCRIPTION 0RS1001H609 Resistor,Metal Oxide Film 0RD2200F609 Resistor,Carbon Film 0RS1003K607 Resistor,Metal Oxide Film 0RD2201F609 Resistor,Carbon Film 0RS1802K607 Resistor,Metal Oxide Film 0RD2202F609 Resistor,Carbon Film 0RS2202K607 Resistor,Metal Oxide Film 0RD2400H609 Resistor,Carbon Film 0RS2702K607 Resistor,Metal Oxide Film 0RD2701F609...
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All FC models level repair only. Parts contact information is below. 5240VD0003A Lead Set Voice: 1-888-3-ZENITH 5240VE0005A Harnees, Single Fax: 1-888-6-ZENITH 6140VB0012B Coil, Choke Mail: Zenith National Parts 6140VC2006F Coil, Degaussing 201 James Record Road 6140VE0001T Coil, Linearity Huntsville, AL 35824-1513 6140VR0008A Inductor,Wire Wound,Chip 6170VC0002A Transformer, Switching...
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H27G48S Exploded View R E F D E S C R IP T IO N H27G 48S C A B IN E T A S S E M B L Y 3091V 00B 78G S P E A K E R , F U L L R A N G E...
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Diagram Interconnect Circuit C H UP C H DOWN VOL UP VOL DOWN MUTE C LOSED C APTION CN6K2 C N2K5 GND2 CN2F6 27V MODEL REV. F SW100 CN8B4 CN5K2A CN6P2A CNTILT CN3R8 CN1A2 IC4500 CN2B1 CN26K CN1B2 LX3400 MPI-DIN3 MPI-DOUT4 SPI-DOUT5 SPI-DIN6...
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AV Switch + 9 V + 9 V + 9 V + 9 V C V- RF C M29 0 2 SHT. 6-8 AUX- R + 9 VSWC SHT. 6-8 L2 9 0 3 L2 9 0 4 + 9 VSWD PROV AUX- L C 2 9 4 7...
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Video Sync Processor RM2 7 5 6 SDA2 10 0 RM2 75 5 SC L2 10 0 + 5 V L27 0 3 4 7 µ H C 2 7 5 6 C M2 7 5 7 4 7 µ F 0 .1 2 5 V 5 0 V...
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RGB Switcher + 5 V TO VIDEO OUTPUT C M2 73 2 C 2 7 3 1 + 9 V B OARD ICM2702 PROV PROV 5 0 V 5 0 V C 2 7 19 + 5 V + 5 V CN2C9 B A7 6 5 7 F Q2 7 0 3...
Audio Processor IC1400 0 IMC RMN013 A + 8V MSP- 34 25 G C M14 09 XTAL_ OUT C RY140 0 50 V 15 6- A02M RM14 10 C 14 26 18 .432MHz XTAL_ IN C M14 10 1.5K 4 7µ F RM14 07 16 V 68 K...
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Microcontroller SHT. 6-7 TILT2 SHT. 6-7 TILT1 C N3 C 9 + 5 V 3 6 6 - 9 2 1L RM6 0 2 1 IC 6 0 0 0 C M60 6 4 RM6 0 2 0 2 2 0 RM6 0 0 1 5 0 V Q60 0 0...
Horizontal & Vertical Deflection C N2C 3 + 5V 366 - 92 1B + VH TO DEFLEC TION VIDEO + 2 8V CN3Y3 + 28V YOKE OUTPUT IC3200 36 6- 043 K B OARD + VDO R32 19 TX3 2 0 1 C 32 16 C 3215 0IKE358 00 0A...
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AC Input HOT SIDE C OLD SIDE + 12 KX3 9 0 0 14 1- 0 18 E DG12 D1- O( M) 12 V DX3 9 0 0 0 DRGF0 0 10 4 A GUF10 J RX3 9 0 0 DEG- C TRL 2 .2K QX3 9 0 0...
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Switched PWS C X3 67 0 47 0pF + 3 3 100 0 V DX3 6 60 LX3 85 0 FB 3 66 0 LX3 8 5 2 RX3 8 52 + 33TNR 8 2µ H 10 0µ H P/ L 0.7 93 µ...
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Standby PWS HOT SIDE C OLD SIDE + 12 CN1A2 3 8 7 - A0 6 J TO SMALL SIGNAL DX3 7 2 0 RX3 7 2 0 MODULE + V1 PROV PROV C X3 7 2 1 1/ 2 W RX3 7 2 1 GUF10 J PROV...
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+ 12 + 5 V C ON11E1 SB F + 5 VSB F 6 6 30 VL0 2 811 + 12 VSB R49 9 5 10 K R4 99 6 MPI_ DATA_ IN 4 7 0 MPI_ DATA_ OUT R4 99 3 10 K Q4 906 SHT.
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RGB Card Circuit C N3 6 63 0 VL0 2 7 11 6 6 30 GL00 5 15 C N2 6 63 0 VL0 2 7 11 SHT. 6-19 CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X” IN THEIR ALL COMPONENTS WITH “M”...
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RGB PREAMP + 5V TO SMALL D5 10 4 RM5 15 8 CN9C4 SIGNAL PROV 2 .2 K B OARD 3 6 6 - 9 2 1C CN9C3 H- FB P- VDO 3 6 6 - 9 2 1L C LAMP SDA2 C M513 0 AB L...
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Front Jack Circuit PJ-6054 6630GL00515 CN2F6 CN8B4 366-921L 366-921G CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X” IN THEIR ALL COMPONENTS WITH “M” IN THE DESIGNATOR 3828VD0171E FCS 48 SERIES SHEET 21 6-21 COMPONENTS DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED. ARE A SURFACE MOUNTED COMPONENT.
Keyboard Circuit + 5 V + 5V C HANNEL VOLUME VOLUME C HANNEL C LOSED MENU 14 0- 3 15 A DOWN 14 0 - 3 15 A C APTION 14 0 - 3 15 A DOWN 14 0 - 3 15 A 140 - 3 15 A 14 0 - 3 15 A + 5 V...
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Ir Led Circuit SW100 14 0 - 2 7 5 B LED100 POWER CN5K2A 16 2 - 0 0 2 B + 5 V INDIC ATOR LED IR10 0 3 6 6 - 9 2 1D R10 0 6 7 2 6 VV00 0 6 J 7 5 0 SHT.
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Small Signal Bottom RM12 12 RM12 0 7 RM12 0 8 RM12 5 9 RM12 5 8 C M12 10 RM12 0 6 AGC C HEC K C M12 3 7 FID8 RM6 0 3 5 C M12 3 3 RM6 0 3 6 RM12 3 5 C M6 0 5 8...
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Small Signal Top C N2B 1 C N2C 1 C N7R2 C N4B 8 GNDA1 C X3 8 2 4 C N4 C N2P6 FID2 7 RX3 9 2 0 C X3 8 2 2 C X3 8 7 0 C N2D1 FID2 C N2C 9...
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Large Signal Top C OLD C OLD DIREC TION 6 8 7 0 VM0 4 5 9 F PROC ESS GND2A HVGND C N3T8 SPGND TX3201 JUN- 15 - 2 0 0 4 E4 2 E4 4 KX3 9 0 0 G2 9 C OLD C OLD...
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One Panel Bottom C M5 12 1 C M5 13 0 SDA2 C M5 13 1 SC L2 C M5 10 9 RM5 117 C M5 110 RM5 118 C M5 111 RM5 119 RM5 10 3 R- OSD RM5 113 RM5 10 4 G- OSD RM5 114...
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One Panel Top IC 5161 6 8 7 0 VS17 5 8 F B LUE W5 10 1 L5 10 5 R5 10 8 D5 10 2 JUN- 18- 2004 Q5 10 2 R5 13 5 IC 5141 R5 10 9 R5 10 6 R5 14 6 GREEN...