Zenith H27G48S Service Manual

Zenith H27G48S Manual

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  • Zenith H27G48S | Service Manual - Page 1
    zenith SERVICE MANUAL Product Type: Chassis: Manual Part #: Model Line: Product Year: Presentation Series DIGITAL FCS 3828VD0171G H 2006 Model Series: H27H49S H32H49S Printed in U. S. A. CONTENTS General Information/Remote Controls 1 Installer's Menu 2 Servicing/Trobleshooting 3 Model/
  • Zenith H27G48S | Service Manual - Page 2
    is serviced, the brightness should be run up and down while monitoring the high voltage with a meter, to be certain that the high voltage does not exceed the specified value and that it is regulating correctly. 5. When troubleshooting and making test measurements in a product with a problem of
  • Zenith H27G48S | Service Manual - Page 3
    PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO-VIDEO PRODUCTS X-RADIATION To prevent possible exposure to X-Radiation caused by excessive CPT anode voltage, The Digital FCS chassis incorporate a ¨High Voltage
  • Zenith H27G48S | Service Manual - Page 4
    on the following pages. The Factory Menu that is intended for qualified service technicians only, is not shown (XX-F items). Normally Factory menu ON), the TV does not respond to POWER On/Off commands from either the remote or the TV front control panel, and the SLEEP TIMER is also nonfunctional.
  • Zenith H27G48S | Service Manual - Page 5
    in order to set the Alarm. 18-I. NOT USED 19-I. NOT USED 20-I. FEATURE LEVEL Default set to ZEN 1 for Zenith IR remote control operation. Set O, P LBL for Zenith Private Label IR remote control operation. Warning: Note: Installer should leave Item 20-I FEATURE LEVEL set to 1 (default). Do not set to
  • Zenith H27G48S | Service Manual - Page 6
    INSTALLER MENU Note: If set to 0, Auto program is locked; (as shown on Setup menu) channel search is not available. 29-I. OLD OCV (On Command VideoTM) Set to 1 for operation with systems from On Command Corporation. 30-I. ACK MASK M.P.I. Communication Parameter. Leave at default setting unless
  • Zenith H27G48S | Service Manual - Page 7
    INSTALLER MENU 58-I. FOR. AUDIO. COL. (Audio Menu Foreground Color) Set according to Color Chart. 0 = Black 3 = Yellow 6 = Cyan 1 = Red 4 = Blue 7 = White 2 = Green 5 = Violet 59-I. BCK. AUDIO. COL. (Audio Menu Background Color) Set according to Color Chart. 0 = Black 3 = Yellow 6 =
  • Zenith H27G48S | Service Manual - Page 8
    ratio to default setting at TV turn On. FACTORY MENU ACCESSING THE FACTORY'S MENU Using the remote control or the keyboard on the front panel can access the Factory's Menu items. With the remote, just press and hold MENU (about 8 seconds) until the display changes, then press 1, 9, 3, 7, then ENTER
  • Zenith H27G48S | Service Manual - Page 9
    FACTORY MENU DETAILED DESCRIPTIONS OF FACTORY MENU ITEMS 000-F FACT MENU: Use the Select key to select item #00, which is the first item in the Factory's Menu. The Factory Mode item should always be left off (Zero is off). When The Factory Mode is on, the Factory Menu line appears at the top of the
  • Zenith H27G48S | Service Manual - Page 10
    FACTORY MENU 020-F GDRIVE G channel drive gain control. Range: 0- 63, 0H = -4.2 dB, 29H = 0 dB, 3FH = +2.1 dB. Fixed value. 021-F BDRIVE B channel drive gain control. Range: 0- 63, 0H = -4.2 dB, 29H = 0 dB, 3FH = +2.1 dB. Fixed value. 022-F RCUTOFF R channel cutoff control Range: 0-63, 0H = -9.1dB,
  • Zenith H27G48S | Service Manual - Page 11
    FACTORY MENU 054-F SHPF0: Sharpness fo setting. 3= 3Mhz @ Normal mode 076-F V_LIN: Vertical linearity adjustment. Range: 0- 15, Initial value: 07. 055-F BLKOFF: Blanking ON/OFF SW when AKBOFF=1 Default value is 0. 077-F V_S_CORRECTION: Vertical S correction. Range: 0-15, Initial value: 5. 056-F
  • Zenith H27G48S | Service Manual - Page 12
    FACTORY MENU 094-F AFC_COMP: HV fluctuation compensation amount setting for H position. Range: 0-7, Initial value: 0. 095-F APC-MODE 096-F SYNC-PHASE 097-F RST-SW NTSC: IC CXA2151 115-F HUEM: Tint control for NTSC signals. 116-F AGCMDM: AGC behavior can be chosen from four possible modes. 117-F
  • Zenith H27G48S | Service Manual - Page 13
    FACTORY MENU 138-F READM: Read mode master channel. 0=Readings A and B fields. 139-F RDPOSYM: Vertical read position. 140-F RSHIFTM: Raster shift master. 1=Enable. 141-F NRONM: Temporal noise reduction. 1= Enabled. 142-F TNRNR4YM: Temporal noise reduction for Luma. 1= Enabled. 143-F TNRMD4YM:
  • Zenith H27G48S | Service Manual - Page 14
    FACTORY MENU 181-F GCMON: Progressive picture improvement. 0=off. 182-F HSPPL: H sync shift. Default value is 0 183-F VSLPF: V sync shift. Default value is 0 184-F CVSEL1: Output select for CVBS2. 185-F CVSEL2: Output select for CVBS4 or Y. 186-F CLMPSIG1: Clamping signals ADC1. 0=1st color decoder
  • Zenith H27G48S | Service Manual - Page 15
    FACTORY MENU 227-F R-CUTOFF NTSC: Red cutoff control is used to adjust cut-off voltage at the cathode. Range: 0-255d. 228-F G-CUTOFF NTSC: Green cutoff control is used to adjust cut-off voltage at the cathode. Range: 0-255d. 229-F B-CUTOFF NTSC: Blue cutoff control is used to adjust cut-off voltage
  • Zenith H27G48S | Service Manual - Page 16
    FACTORY MENU 020-F PIN_AMP OFFSET 021-F UP_CPIN OFFSET 022-F LO_CPIN OFFSET SVGA 023-F UP-BLK 024-F LO-BLK 041-F UP_UCP: Horizontal pin adjustment for extreme top edge. Range: 0-3, Initial value: 0. 042-F LO_UCP: Horizontal pin adjustment for extreme bottom edge. Range: 0-3, Initial value: 0. 043
  • Zenith H27G48S | Service Manual - Page 17
    FACTORY MENU 060-F AC BLK LEV SVGA: Black level for AC coupling with 3bit DAC. Default value is 0. 079-F USATADJ: U saturation adjustment. Default value is 40d. 061-F BRI SVGA: Default value is 1 (internal brightness control without grey scale tracking). 080-F VSATADJ: V saturation adjustment.
  • Zenith H27G48S | Service Manual - Page 18
    FACTORY MENU 099-F R-CUTOFF Y PrPb: Red cutoff control is used to adjust cut-off voltage at the cathode. Range: 0-255d. 100-F G-CUTOFF Y PrPb: Green cutoff control is used to adjust cut-off voltage at the cathode. Range: 0-255d. 101-F B-CUTOFF Y PrPb: Blue cutoff control is used to adjust cut-off
  • Zenith H27G48S | Service Manual - Page 19
    CIRCUIT OVERVIEW BASIC CIRCUIT THEORY POWER SUPPLY DEFINITION The Power Supply uses a COLD chassis and is a single sided circuit board that has been developed for screen sizes 27" through 32". The power supply features two switch mode power regulators for voltages sources. One is intended for
  • Zenith H27G48S | Service Manual - Page 20
    , causing Horizontal Drive to be disabled and latched, preventing further generation of anode voltage. The drive will remain off until power (via remote control or front panel) is cycled from "Off" to "On". Vertical Deflection The Vertical Deflection circuit, IC2100, is a linear amplifier that can
  • Zenith H27G48S | Service Manual - Page 21
    SERVICING PURITY ADJUSTMENT 1. Purity tab positioning. Set the 2 pole purity tabs together in the 3 or 9 o'clock positions 4 Pole Convergence R over B Opposite Same Movement of Red and Blue Beams B B OR R R B R OR B R B B OR R R B R OR B R 3828VD0171G 3-3 DIGITAL FCS - SERVICING
  • Zenith H27G48S | Service Manual - Page 22
    and secure each wedge with a piece of tape, as described above. IMPROVING CRT CORNER PURITY CRTs that display corner purity problems even after following the service procedures can be modified with a picture correction kit (P/N 949-00050). The purity can be improved by placing a picture-correction
  • Zenith H27G48S | Service Manual - Page 23
    SERVICING VIDEO OUTPUT AMP IC IC5121, IC5141 and IC5161 consists of one monolithic video output amplifier. It is called a transadmittancetransimpedance amplifier both the Computer and Aux. Video inputs. (If both video inputs are in use the Aux. Video 3828VD0171G 3-5 DIGITAL FCS - SERVICING
  • Zenith H27G48S | Service Manual - Page 24
    the pin 15. •CV RF: The IF section sends the composite video to the ICM2900 A/V switch (CXA2089Q, I2C bus supported) at pin 47. •CV-2: Fed from the rear jack pack to the A/V switch at input pin 8. •CV-4: This for missing input clamping pulses. (Pin 5 CL1). 3828VD0171G 3-6 DIGITAL FCS - SERVICING
  • Zenith H27G48S | Service Manual - Page 25
    SERVICING In the output stage the nominal input signal will be amplified to provide a 4.6V output color signal At maximum contrast and the CRT cathode through the resistors R5127, R5128, for arcing protection, and the coil L5121 for peaking improvement. 3828VD0171G 3-7 DIGITAL FCS - SERVICING
  • Zenith H27G48S | Service Manual - Page 26
    MODEL PARTS PART NUMBER 0CB10212474 0CC0800K115 0CC100CK41A 0CC101CK41A 0CC101DR41A 0CC1020K405 0CC102CK41A 0CC200CK41A 0CC2210K415 0CC221CK41A 0CC270CK41A 0CC331CK41A 0CC4710K405 0CC680CK41A 0CC681CK41A 0CE1057K636 0CE105CK636 0CE105DK618 0CE105SK6DC 0CE106BT630 0CE106DF618 0CE106DK618 0CE106SH6DC
  • Zenith H27G48S | Service Manual - Page 27
    MODEL PARTS PART NUMBER 0DZ910009AJ 0FS5001B51D 0IAL241610B 0IAL242561B 0ICTMFA001A 0ICTMMI060A 0IFA753307A 0IKE358000A 0IKE704200B 0IKE780500P 0IKE780500Q 0IKE780800J 0ILI817000G 0ILNRJR017A 0IMCR02243A 0IMCRKE002B 0IMCRMN013A 0IMCRMN029B 0IMCRMZ001A 0IMCRSG010A 0IMCRSG011A 0IMCRSJ001B 0IMCRSO007A
  • Zenith H27G48S | Service Manual - Page 28
    ,Radial Capacitor,Ceramic,Radial Capacitor,Ceramic,Radial Cover Assembly Chassis Assembly Decor Door Assembly Door Assembly Window Cover Assembly Manual Name Plate Harness, Single Harness, Single Harness, Single Harness,Single Harness, Single Harness, Single Harness,Single Harness, Single Harness
  • Zenith H27G48S | Service Manual - Page 29
    Switch,Slide Switch,Tact Jack,Modular Jack,RCA Socket,CRT Harness, Single Harness, Single Harness, Single Conector,RF Tuner,Digital Tuner,Analog Remote Controller Receiver Module Cable PCB Assembly, Main PCB Assembly, Power PCB Assembly, Sub PCB Assembly, Sub Battery, Alkaline Spark Gap, Axial
  • Zenith H27G48S | Service Manual - Page 30
    MODEL PARTS MODEL: H32H49S PART NUMBER DESCRIPTION 0CK47101515 Capacitor,Ceramic,Radial 0CK56101515 Capacitor,Ceramic,Radial 0CN1020K519 Capacitor,Ceramic,Axial 0CN1030F679 Capacitor,Ceramic,Axial 0CN6810K519 Capacitor,Ceramic,Axial 0CQ1032K439 Capacitor,Film,DIP 0CQ1041N509 Capacitor,
  • Zenith H27G48S | Service Manual - Page 31
    MODEL PARTS MODEL: H32H49S PART NUMBER DESCRIPTION 0RD2200F609 Resistor,Carbon Film 0RD2201F609 Resistor,Carbon Film 0RD2202F609 Resistor,Carbon Film 0RD2400H609 Resistor,Carbon Film 0RD2701F609 Resistor,Carbon Film 0RD2701H609 Resistor,Carbon Film 0RD2702F609 Resistor,Carbon Film
  • Zenith H27G48S | Service Manual - Page 32
    6871VSMW41B PCB Assembly, Sub 6918VAX002E Spark Gap, Axial All FC models level repair only. Parts contact information is below. Voice: 1-888-3-ZENITH Fax: 1-888-6-ZENITH Mail: Zenith National Parts 201 James Record Road Huntsville, AL 35824-1513 3828VD0171G 4-7 DIGITAL FCS-49 SERIES MODEL PARTS
  • Zenith H27G48S | Service Manual - Page 33
  • Zenith H27G48S | Service Manual - Page 34
  • Zenith H27G48S | Service Manual - Page 35
  • Zenith H27G48S | Service Manual - Page 36
    H27G48S Exploded View 1 2 3 4 5 6 7 REF D E S C R IP T IO N 1 C A B IN E T A S S E M B L Y 2 SPEAKER, FULLRANG E 3 C H A S S IS A S S E M B L Y K E Y B O A R D 4 W IN D O W 5 C P T A S S E M B L Y (C R T ) 6 BAC K C O VER ASSEMBLY 7 C H A S S IS A S S E M B L Y M A IN /S M P S 8
  • Zenith H27G48S | Service Manual - Page 37
    FULLRANGE 3 CHASSIS ASSEMBLY KEYBOARD 4 WINDOW 5 CPT ASSEMBLY (CRT) 6 BACK COVER ASSEMBLY 7 CHASSIS ASSEMBLY MAIN/SMPS 8 REMOTE CONTROLLER H32G48S 3091V00496K 6400VA0025B 3141VSNC61H 3790V00703A 6335V34006A 3809V00343E 3141VFN003C 6710V00121A 3828VD0171E 5 4 3 2 1 5-2 8 9 10 SCALE 0.800
  • Zenith H27G48S | Service Manual - Page 38
    Diagram Interconnect Circuit 1 2 3 4 5 6 7 8 9 10 VIDEO FRONT IN CAMPORT SENSE COMPUTER SENSE L FRONT-IN R-FRONT VERT-FRONT 5V H-FRONT R-FRONT G-FRONT B-FRONT G CH UP C H DOWN VOL UP VOL DOWN MUTE C LOSED C APTION OUT VC C GND REV. F CN8B4 GND2 CN1 C CN2F6 SW2 SW3 SW4 SW5
  • Zenith H27G48S | Service Manual - Page 39
    AV Switch 1 2 3 4 5 6 7 8 9 10 G + 9V + 9V + 9V AV SWC SWD + 9V SWD C M2902 C V- RF SHT. 6-8 L2 9 0 3 + 9 VSWC L2 9 0 4 + 9 VSWD PROV AUX- R SHT. 6-8 WF1 15µ H C M2942 0.1 16 V C2943 10µ F 50V 15µ H C2947 PROV 50V R2 9 0 0 10 Q2 9 0 0 C WF 0 TR9 4 5 0 0 9 A A
  • Zenith H27G48S | Service Manual - Page 40
    Video Processor 1 2 3 4 5 6 7 8 9 10 G 12 WF12 RM2 2 5 3 10 0 RM2 2 4 9 RM2 2 6 2 15 0 WF TP2 2 0 3 TP2 2 0 5 TP2 2 0 4 R- INT G- INT B - INT SHT. 6-5 SHT. 6-5 SHT. 6-5 1V 10 0 RM2 2 4 0 RM2 2 5 2 10 0 RM2 2 5 5 15 0 + 5V 3.3M TNR F C2239 + 9V VDO A 0.47 50V RM2 2 5
  • Zenith H27G48S | Service Manual - Page 41
    Video Sync Processor 1 2 3 4 5 6 7 8 9 10 G F E D C B A 3828VD0171E H- SYNC - SC AN C2733 0.47 50V R2 7 3 1 10 0 V- SYNC - SC AN C2734 0.47 50V R2 7 3 2 10 0 H- SYNC - FRONT V- SYNC - FRONT HORZ- YUV VERT- YUV C2761 0.47 50V C2762 0.47 50V RM2 7 5 7 75 RM2 7 5 6 10 0 RM2
  • Zenith H27G48S | Service Manual - Page 42
    RGB Switcher 1 2 3 4 5 6 7 8 9 10 G + 5V TO VIDEO OUTPUT + 5V + 5V TNR L2 7 0 1 C 2719 47µ F 16 V IC M2 7 0 2 NEW B A7657F 1 R1- IN HD1- IN 2 4 C M2732 PROV 50V C2731 PROV 50V + 9V VDO C B Q2 7 0 3 PROV KSC945C- Y B OARD 17 C N2 C 9 WF 366- 921G F WF17 100µ H C
  • Zenith H27G48S | Service Manual - Page 43
    1 G F E D C B A 3828VD0171E Scan Converter 2 3 4 5 6 7 8 9 10 C V- MAIN SHT. 6-2 Y- MAIN SHT. 6-2 C - MAIN SHT. 6-2 C M2028 0.1 16 V C M2029 0.1 16 V WF18 800MV WF19 610MV WF20 610MV + 1.8 SC B L2 0 0 1 10µ H + 1.8 VFD + 1.8VFD C2003 470µ F 10 V C M2002 0.1 16 V + 1.8 VFA C M2001
  • Zenith H27G48S | Service Manual - Page 44
    1 2 G F E D C SHT. 6-10 SHT. 6-10 B Tilt Circuit 3 4 5 6 7 8 9 10 IC 4 5 0 0 0 ISA16 45 00 B LB 1645N C NTILT 366- 921B 11 TO TILT 2 C OIL 3 C4500 0.1 50V C4501 0.01 16 V + 5V TNR R4 5 0 3 47K + 5V TNR R4 5 0 1 1K R4 5 0 4 C B 10 K E Q4 50 1 0 TR3 19 8 0 9 A A KTC 3198
  • Zenith H27G48S | Service Manual - Page 45
    1 G F E D C B A 3828VD0171E Tuner 2 3 4 5 6 7 8 9 SHT. 6-10 SHT. 6-10 SHT. 6-10 RM12 0 5 10 0 RM12 0 7 1.5 K C M1210 10 0 0 p F 50V RM12 0 6 390 C M1211 0.01 50V L12 0 3 0.82µ H RM12 12 10 0 RM12 11 10 0 C M1213 RM1208 B 10 0 C Q12 0 0 0 TR9 5 9 0 0 9 A A E B F959 RM12 0 9 33 10 0
  • Zenith H27G48S | Service Manual - Page 46
    Audio Processor 1 2 3 4 5 6 7 8 9 10 G F SHT. 6-10 SC L2 SHT. 6-10 SDA2 R14 0 1 10 0 R14 0 2 10 0 IC 14 0 0 0 IMC RMN013 A MSP- 3425G 11 TP 52 XTAL_ OUT 2 NC 51 XTAL_ IN 3 TESTEN 5 0 D_ C TR_ I/ O1 4 49 D_ C TR_ I/ O0 NC 5 48 ADR_ SEL ANA_ IN- 6 47 STANDB YQ ANA_ IN+ 7
  • Zenith H27G48S | Service Manual - Page 47
    Microcontroller 1 2 3 4 5 6 7 8 9 10 G SHT. 6-7 SHT. 6-7 TILT2 TILT1 + 5V C N3 C 9 AV 366- 921L 11SDA 2 2 3 SC L2 4 5 R- OSD 6 7 G- OSD 8 9 B - OSD 10 11 FB - OSD 12 27 RM6 0 2 1 26 IC 6 0 0 0 WF24 Q60 0 0 0 TR9 4 5 0 0 9 A A C M6064 RM6001 50V 4.7K PROV RM6 0 0 0 RM6 0
  • Zenith H27G48S | Service Manual - Page 48
    Power Supply 1 2 3 4 5 6 7 G RX3 9 2 0 SHT. 6-10 PDD 2.2K IC X3 8 2 0 4 9 2 1V0 0 16 3 A + 9V CXA2069, CXA250Q + 8 V MSP3435 0 IMC RKE0 02 A AV AUD 408- 002F + 9 VAV + 8 VAUD RX3 8 2 3 IN OUT RX3 8 3 9 DX3 8 2 1 CN2B 1 F 366- 921N 3.3 2W C X3 8 2 9 9V C TL GND C X3 8
  • Zenith H27G48S | Service Manual - Page 49
    1 G F E D C B A 3828VD0171E C 3227 R3211 0.1 5 0V PROV Horizontal & Vertical Deflection 2 3 4 5 6 7 8 9 + 28V C 3 2 16 1 100µ F 50V 2 C 3 2 15 2 0.01 1 50V R3 2 10 1 2 27K 2 R3 2 12 330K 1 2 C3228 680pF 1 5 0 V R3 2 13 1 2 1K + 28V R3 2 14 1 2 36K 1% 2 + 15 2 1 VDC
  • Zenith H27G48S | Service Manual - Page 50
    1 G F E D C B A 3828VD0171E AC Input 2 3 4 5 6 7 8 9 C N3 T8 366- 043B TO DEGAUSSER C OIL 1 11 22 2 CX3900 0.1 1 2 7 5 VA C TH X3 9 0 1 1 2 6 3 2 2 V6 2 2 0 6 A ZPB 31B L5R0N HOT SIDE C OLD SIDE K X3 9 0 0 141- 018E DG12 D1- O( M) 12 V 4 1 2 3 + 12 VSS 2 DX3 9 0 0 0 DRGF0 0 10
  • Zenith H27G48S | Service Manual - Page 51
    Switched PWS 1 2 3 4 5 6 7 8 9 G C X3 6 7 0 1 2 470pF 10 0 0 V VE B+ + 33 TNR DX3 6 6 0 LX3 8 5 0 F FB 3660 1 2 1 2 VE B+ S1 F2 LX3852 RX3852 1 2 1 2 + 33TNR 0.793µ H 6200JB 8011T 34 4 9 2 1V0 0 N11V 0DRON0 0 18 2 A 408- 002E MUR8 6 0 82µ H 150- C 02F 1 CX3660
  • Zenith H27G48S | Service Manual - Page 52
    1 G F E D C B A 3828VD0171E Standby PWS 2 3 4 5 6 7 8 9 10 HOT SIDE C OLD SIDE 8 1 + V1 RX3 6 0 0 10 0 K 2W C X3 6 0 0 0.1 630V DX3 6 0 0 0 DRGF0 0 10 4 A GUF10 J + V1 4 FB / START 5 OLP UP 6 7 8 7 6 5 GND N.C . VCC D SOURC E/ D OC P 1 2 01 2 RX3 6 0 1 1.2 1 2W 1 2
  • Zenith H27G48S | Service Manual - Page 53
    MPI 1 2 3 4 5 6 7 8 G F + 12 C ON11E1 VSB 6 6 3 0 VL0 2 8 11 111 + 12 VSB 22 TP1 33 MPI_ DATA_ IN 44 MPI_ DATA_ OUT E 55 SHT. 6-19 66 77 88 99 + 5VSB F 1010 IR_ DATA 1111 C LONESENSE- PTY- SELEC T D C ON6 E2 6 6 3 0 VL0 2 8 11 111 22 33 C 44 55 66 77 88 99 1010
  • Zenith H27G48S | Service Manual - Page 54
    1 G F E D C B A 3828VD0171E RGB Card Circuit 2 3 4 5 6 7 8 J1 6 6 30 GL00 5 15 15 51 10 14 4 9 13 3 8 12 2 7 11 1 16 6 17 C N3 6 6 3 0 VL0 2 7 11 1 2 3 4 5 6 7 8 9 10 11 C N2 6 6 3 0 VL0 2 7 11 1 2 3 4 5 6 7 8 9 10 11 SHT. 6-19 CRITICAL SAFETY COMPONENTS ARE IDENTIFIED
  • Zenith H27G48S | Service Manual - Page 55
    RGB PREAMP 1 2 3 4 5 6 7 G + 5V TO SMALL SIGNA L B OARD D5 10 4 PROV RM5 15 8 2.2K CN9C3 366- 921L F 1 SDA2 C M5130 2 PROV 25V 3 SC L2 RM5 116 C M5131 4 PROV 2 1 10 0 5 R- OSD 25V RM5 10 3 2 1 3K 6 7 G- OSD 8 RM5 10 4 2 1 3K 9 B - OSD RM5 10 5 2 1 E 3K 10
  • Zenith H27G48S | Service Manual - Page 56
    1 G F E D C B A 3828VD0171E Edge Connector 2 3 4 5 6 7 8 9 10 SHT. 6-2 C N2 R7 366- 922E 6 5 SPARE 4 AUDIO- GND 3 LEFT- AUDIO- IN 2 AUDIO- GND 1 RIGHT- AUDIO- IN SHT. 6-16 C ON1 6 6 3 0 VL0 2 7 11 1 + 12LSP 2 PS- GND 3 MPI- DIN 4 MPI- DOUT 5 SPI- DATA- OUT 6 SPI- DATA- IN 7 SPI- C LOC
  • Zenith H27G48S | Service Manual - Page 57
    Video Output 1 2 3 4 5 6 7 8 9 10 G 1 RC - 2 VIN 3 RC + 4 VB 5 IIN 6 12 V 7 IK 8 GND 9 NC 10 200V 11 NC 12 OUTO 13 OUT 1 2 3 4 5 6 7 8 9 C N3 C 2 387- A03D 1 2 3 WF32 3.16V WF33 93V IC 5 12 1 4 9 2 1V0 0 18 1V TDA 6 12 0 Q F + 180 1 VDO + 18 0 VDO L5 10 1 1 C 5 10 3 10µ F 2 350V
  • Zenith H27G48S | Service Manual - Page 58
    Front Jack Circuit 1 2 3 4 5 6 7 8 G JP1 PJ-6054 NEW F CN1 6630GL00515 VIDEO IN 3 11 2 AUDIO RIGHT IN 4 5 AUDIO LEFT IN 6 7 15 5 10 14 4 9 13 3 8 3 1 2 4 5 6 7 12 2 7 11 1 6 E D C B A 3828VD0171E 1 VIDEO-FRONT-IN 2 3 CAMPORT-SENSE 4 COMPUTER-SENSE 5 L-FRONT-IN
  • Zenith H27G48S | Service Manual - Page 59
    Keyboard Circuit 1 2 3 4 5 6 7 8 9 10 G F + 5V SB R11 R10 R9 R8 R7 1K 1K 1K 1K 1K E R12 1K R13 R14 1K 1K + 5V SB R15 R16 1K 1K SW7 SW6 C LOSED SW5 VOLUME SW4 VOLUME SW3 C HANNEL SW2 C HANNEL + 5V 140- 315A MENU 140- 315A C APTION 140- 315A DOWN 140-
  • Zenith H27G48S | Service Manual - Page 60
    1 G F E D C B A 3828VD0171E Ir Led Circuit 2 3 4 5 6 7 8 9 10 2 7 V C AB INET SW10 0 140- 275B 7 8 1 2 3 4 5 6 POWER LED10 0 INDIC ATOR LED 162- 002B 1 2 1 R10 0 750 2 1 11 2 3 3 2 CN6P2A 387- P/ L IR10 0 6 7 2 6 VV0 0 0 6 J 3GVOCNUDTC 2 1 2 R400 + 5V 10 K
  • Zenith H27G48S | Service Manual - Page 61
    1 G F E D C B A 3828VD0171E 2 C M6058 RM6 0 6 3 RM6 0 6 4 C M6009 RM6 0 3 2 RM60 17 RM60 19 C M6 00 7 RM60 16 RM60 18 RM6067 RM6068 RM6 0 3 3 3 RM6 0 6 5 RM6 0 2 7 RM2 2 3 5 FID5 CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER "X" IN THEIR COMPONENTS DESIGNATORS. REPLACE ONLY WITH
  • Zenith H27G48S | Service Manual - Page 62
    1 G F E D C B A 3828VD0171E Small Signal Top 2 3 4 5 6 7 8 9 10 RX3 8 3 1 QX3 8 2 2 IC X3825 C X3 8 2 4 C X3 8 2 2 FID1 CN2B 1 C N2 C 1 1 RX3 9 2 0 C X3 8 2 3 C X3 8 2 1 LX3822 RX382 0 C X3 8 7 0 C N2 C 9 C X3 8 7 1 LX3 8 2 4 QX3 8 2 0 IN OUT RX3 8 2 2 C TL L2 2 05 C X3 8 2
  • Zenith H27G48S | Service Manual - Page 63
    1 G F E D C B A 3828VD0171E Large Signal Top 2 3 4 5 6 7 8 9 RX4 8 0 1 RX4 8 2 2 DX4 8 0 1 _ A_ V C OLD HOT C N3 R8 FH X3 4 0 0 A G9 G10 RX3 4 0 0 C X3 9 0 0 DX3 9 0 0 QX3 9 0 0 G7 7 D3 2 0 1 FB 3204 R3 2 0 7 R3 2 0 8 C X3 4 16 C OLD HOT C N3 T8 G2 9 C OLD HOT TH X3 9 0 1 G2 8
  • Zenith H27G48S | Service Manual - Page 64
    One Panel Bottom 1 2 3 4 5 6 7 8 G F E RM5 15 8 H- FB P- VDO C LAMP AB L GND RM5 15 5 RM5 15 6 RM5 15 7 D C B A 3828VD0171E CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER "X" IN THEIR COMPONENTS DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED. C M5123 RM5 12 2 RM5 12 3
  • Zenith H27G48S | Service Manual - Page 65
    1 G F E D C B A 3828VD0171E One Panel Top 2 3 4 5 6 7 8 6 8 7 0 VS17 5 8 F JUN- 18- 2004 SW2 DIREC TION PROC ESS R15 R16 R7 R8 R12 W2 0 3 R13 SW3 REV. F SW10 0 27V MODEL R14 SW4 R11 R10 R9 W2 0 1 1 W2 0 0 SW5 C N6 K 2 REV. F LED10 0 C N6 P2 A R10 0 IR10 0 OUT VC C GND
  • Zenith H27G48S | Service Manual - Page 66
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SERVICE MANUAL
SERVICE MANUAL
Product Type:
Chassis:
Manual Part #:
Model Line:
Product
Year:
Model Series:
CONTENTS
General Information/Remote Controls
................................
Installer’s Menu
............................................................
Servicing/Trobleshooting
................................................
Model/Module Parts List
.................................................
Exploded Views
.............................................................
Schematics
...................................................................
Published by
Technical Publications
Zenith Electronics Corporation
P. O.
Box
240007
Huntsville, Al 35824
Copyright
May 2006 by Zenith Electronics Corporation
©
Printed in U. S. A.
zenith
Presentation Series
DIGITAL FCS
3828VD0171G
H
2006
1
2
3
4
5
6
H27H49S
H32H49S