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SHARP
•PARTS LIST .......................................................................................................................................................................................
SERVICE MANUAL
MODEL_______
——————————————————————————————
In order to service model 37ET-35S, refer to the
previously issued Service Manual for model 37DT-25S.
This manual only contains the differences beween the
above mentioned models.
________________________________
In the interests of u s e r - s a f e t y (required by safety
regulations in some countries) the set should be
restored to its original condition amd only parts identical
to those specified should be used.
SHARP CORPORATION
CA-1 CHASSIS
!
PAL SYSTEM COLOUR TELEVISION
SEMH37ET35S//
37ET-35S
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Related Manuals for Sharp 37DT
Summary of Contents for Sharp 37DT
- Page 1 MODEL_______ 37ET-35S —————————————————————————————— In order to service model 37ET-35S, refer to the previously issued Service Manual for model 37DT-25S. This manual only contains the differences beween the above mentioned models. ________________________________ In the interests of u s e r - s a f e t y (required by safety...
- Page 2 The difference between the previous model 37DT-25S and the current model 37ET-35S, is only the cabinet. PARTS LIST (Only contains the differences) CODE EX: EUROPEAN MARKET CODE SP: SPANISH MARKET MARK: SPARE PARTS DELIVERY SECTION CODE CODE REF. NO. PARTS...
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Page 3: Table Of Contents
• PRINTED WIRING BOARDS ......12-13 • IMPORTANT SERVICE NOTES ......3 • SCHEMATIC DIAGRAM AND • SERVICE ADJUSTMENTS .......4-10 WAVEFORMS ..........14-18 • SOLID STATE DEVICE BASE DIAGRAM ....10 • BLOCK DIAGRAMS .........19-20 •CHASSIS LAYOUT DIAGRAM ......11 .PARTS LIST .............21-29 _________________________________________________________________ SHARP CORPORATION... -
Page 4: Electrical Specifications
37DM-23SC ELECTRICAL SPECIFICATIONS Aerial input Impedance....75 ohm unbalanced Power Input....220/240 Volts AC 50 Hz Convergence......Self Converging System Power Consumption ....... 38 Wh Focus ........Bipotential electrostatic Speaker Size........8 cm (Round) Audio Power Output Rating ....2Watt(M.P.O.) Voice Coil Impedance. -
Page 5: Important Service Notes
IMPORTAMT SERVICE NOTES Maintenance and repair of this receiver should be carried out by qualified service personnel only. SERVICING OF HIGH VOLTAGE SYSTEM AND PICTURE TUBE When servicing the high voltage system, remove static charge from it by connecting a 10 k ohm resistor in series with an insulated wire (such as a test probe) between picture tube ground tag and high voltage lead (AC line cord should be disconnected from AC outlet). -
Page 6: Service Adjustments
SERVICE ADJUSTMENTS • SERVICE MODE FUNCTION This mode function is provided to assist with the settings of those adjustments that may vary from one Picture Tube to another, or between models. In order to use the Service Mode 1 . Press main switch to OFF. 2. - Page 7 37DM-2; DD (HEX) DESCRIPTION RED COLOUR TEMPERATURE GREEN COLOUR TEMPERATURE BLUE COLOUR TEMPERATURE VERTICAL SHIFT HORIZONTAL SHIFT VERTICAL AMPLITUDE VERTICAL SLOPE LUMA DELAY PAL LUMA DELAY SECAM S-CORRECTION OPTIONS: INGOSD| A F TJ-OCK AV-F 0: FP: SYSTEM B/G (0) - B/G+L, MESSAGE RECHERCHE (1) 1 : AV FRONTAL: NOT INCLUDED (0) , INCLUDED ( 1 ) 2: TUNING LOCK (HOTEL): LOCKED+SWITCH-ON PR1 ( 1 ) , NO LOCKED (0) 3: UHF-ONLY: BAND UHF ( 1 ) - ALL BANDS (0)
- Page 8 OPTIONS: INGOSD TLOCK A V F 0: FP: SYSTEM B/G (0) - B/G+L, MESSAGE RECHERCHE (1) 1 : AV FRONTAL: NOT INCLUDED (0), INCLUDED ( 1 ) 2: TUNING LOCK (HOTEL): LOCKED+SWITCH-ON PR1 (1), NO LOCKED (0) 3: UHF-ONLY: BAND UHF ( 1 ) - ALL BANDS (0) 4: PAL ONLY (1), PAL+SECAM (0) 5: CHILD LOCK: CHILD LOCK ACTIVE ( 1 ) CHILD LOCK NO ACT (0) 6: AUTO FIRST: TUNING FIRST MENU: AUTO ( 1 ) MANUAL (0)
- Page 9 37DM-23 VOLUME CONTRAST COLOUR BRIGHTNESS PEAKING (RANGE: 0-3FH) ACTUAL PROGRAMM TV STATE ON/OFF CONTRAST (FACTORY PRESET) COLOUR (FACTORY PRESET) BRIGHTNESS (FACTORY PRESET) PEAKING (RANGE: 0-3FH)(FACTORY PRESET) ON TIMER LAST VALUE OFF TIMER LAST VALUE OSD STATE BIT 0: PICTURE NORM ON/OFF BIT 1 : SCART/AV LOCKED BIT 2: FRONTAL LOCKED •...
- Page 10 37DM-23SC OSDWORD 1 : BIT 0:OSD PROG SIZE. 0= LARGE (14") 1=SHORT (21-) BIT 1 :OSD PROG DISPLAYED TIME. 0=SHORT TIME 1 = LONG TIME RED REFERENCE FOR AUTO BKGD ADJUSTMENT GREEN REFERENCE FOR AUTO BKGD ADJUSTMENT BLUE REFERENCE FOR AUTO BKGD ADJUSTMENT CONTROL2: OSO, VSD, CB, BLS, BKS, CS1, CSO, BB VALUE= 9AH CONTROL3: HOB, BPS, ACL, CMB, AST, CL2, CL1, CLO...
- Page 11 • GEOMETRY ADJUSTMENT PROCEDURE 1 . H-SHFT a) Receive Philips pattern signal. b) When </\ button is pressed, picture moves to the left. c) When <V button is pressed, picture moves to the right. d) Adjust the horizontal location to obtain picture centering (fig. 1 ) 2.
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Page 12: Solid State Device Base Diagram
• CHILD LOCK CANCEL The following process describes how to cancel actual password (PIN) when the customer forgets code. 1 Switfh ON TV Set- 2, Press butter on TV and °TI on R/C simultaneously. 3. Press MENU button on R/C to input menu. 4. -
Page 16: Schematic Diagram And Waveforms
37DM-23SC DESCRIPTION OF SCHEMATIC DIAGRAM SAFETY NOTE: NOTE: 1 . DISCONNECT THE AC PLUG FROM THE AC 1 . The unit of resistance "ohm" is omitted OUTLET BEFORE REPLACEING PARTS. (K=1000 ohms, M=Magaohm). 2. SEMICONDUCTOR HEAT SINKS SHOULD 2. All resistors are 1/8 watt, unless otherwise BE REGARDED AS POTENTIAL SHOCK noted. -
Page 21: Block Diagrams
37DM-23SC PARTS LIST PARTS REPLACEMENT Replacement parts which have these special safety characteristics idei-F tified in this manual: electrical components having such features are identified by A in the Replacement Parts Lists. The use of a substitute replacement part which does not have the same safety characteristics as the factory recommended replacement parts shown in this service manual may create shock, fire or other hazards. - Page 22 37DM-23SC Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A DUr K7213BMW5 D802 RH-DX0045BMZZ Diode IN4148 D1006 RH-DX0045BMZZ Diode MOTHER Ur '(Continued) D1007 RH-DX0045BMZZ Diode IN4148 (Continued) TRANSISTO D1008 RH-DX0045BMZZ Diode IN4148 Q1003 RH-TX0113BMZZ Transistor D1009 RH-DX0045BMZZ Diode I N4148 01006...
- Page 23 37DM-23S Ret. No. Part No. Description Code Ref. No. Part No. •*• Description PWB-A DUNTK7213BMW5 C623 VCCSTV1HL471J R 470p Ceramic c625 FZ9224BMNJ MOTHER UNIT (Continued) °- Mylar ——————————————————————-—————————-——————— A C702 RC-FZ0070BMZZ S 0.1 250V Mylar inuec CAPACITOF IS (Conti RC-KZ0029CEZZ 250V C703 R 0.01...
- Page 24 37DM-23SC Ref. No. Part No. Description Code Ret. No. Part No. Description Code PWB-A DUNTK7213BMW5 R312 VRD-RA2HD472J R 4.7k 1/2W Carbon R313 MOTHER UNIT (Continued) -"A2HD472J 4.7k 1/2W Carbon R314 VRn-RA?Hn47?.l R 47k 1/2W Carbon (Con tinuel CAPACITOI R315 VRS-TV1JD821J 1/16W Metal Oxide C1017...
- Page 25 37DM-23SC Ref. No. Part No. Description Code Ret. No. Part No. Description Code PWB-A DUNTK7213BMW5 R804 VRS-TV1JD393J R 39k 1/16WMetalOxide R805 MOTHER UNIT (Continued) VRS-TVUD395J R 3.9M 1/16WMetal Oxide R806 VRS-TV1JD2R2J R 2.2 1/16WMetalOxide :inued) (Con! RESISTOF R807 VRS-TV1JD221J R 220 1/16W Metal Oxide R528...
- Page 26 37DM-23SC Code Ref. No. Part No. Descri| Ref. No. Part No. Description Code ption PWB-B our 4BIV PWB-A DW <7213BMW5 K721 MOTHER UIS (Continued) CRT SO JNIT GET I TRAN STOP RESISTOR Continued) RH-TX0181BMZZ BF422 R1072 VRS-TV1JD684J 680k 1 / 1 6 W Metal Oxi Q870 Q871 RH-TX0181BMZZ...
- Page 27 37DM-23SC Ret. No. Part No. Description Code SUPPLIED ACCESSORIES ACCESSORIES RRMCG1059BMSA S Infrared R-C TiNS-652-IBMNO S Instruction Book QANTR0081CEZZ R Rod Antenna ACCESSORIES (NOT REPLACEMENT ITEM) UBATU0007UMZZ Battery - End of SUPPLIED ACCESSORIES - LABELS (NOT REPLACEMENT ITEM) TLABK0001TAN5 S Label TLABM5451BM22 S Label TLABN0130BMN5...
- Page 28 Ref. No. Part No. Description Code CABINET PARTS CCABA1188BMVO S Cabinet Ass'y, Front Not Available - Cabinet, Front HBDGB1017BMSA S Sharp Badge HDECQ0021BMSA S R/CDec. HDECQ0022BMSA S LED Dec. JBTN-1038BMSA S Button, Power JBTN-1039BMSA S Button, Up/Down MSPRC0106BMFW S Spring, Power Button...
- Page 29 37DM-23SC...