Toshiba HM167 Service Manual Download Page 34 | Manualshive

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Summary of Contents for HM167

Page 1: ... PCB locations and their functions as they relate to general diagrams of the units Product Specific Service Manuals This training is designed as an aid to the technician in servicing Toshiba products It is not a replacement for the appropriate service manual s Toshiba service manuals contain product and model specific information and must be consulted prior to servicing any product Product Safety ...

Page 2: ...cept 1080p as an HDMI input but will down convert it to 720p for display purposes 0 Models ending in just 67 will display 720p o Models ending in 167 will display 1080p Three screen sizes listed by model o 50HM67 50 o 57HM167 57 o 65HM67 65 65HM167 65 Three HDMI inputs o Only HDMI1 can be used to input a UVI signal via an adaptor cable The OSD menu must be set to Analog Audio The audio cables must...

Page 3: ...to of the rear jack panel and inputs to the Digital Seine module Note The cover plate has been removed from the Smart Card slot for clarity purposes Figure 2 Disassembly Figure 3 is a photo showing screw proximities to aid in removing the back cover DLP 07 1 20f44 ...

Page 4: ...vision DLP 07 1 Figure 3 Once the ten screws are removed from the back cover we will see a split chassis much like we have seen in the past Figure 4 is a photo depicting a split chassis Split Chassis Figure 4 DLP 07 1 30f44 ...

Page 5: ...vision DLP 07 1 Figure 5 is a photo showing the four screws that must be removed to move the Main chassis and Light Engine chassis Figure 5 Figure 6 shows a wire tie that can be squeezed and removed Figure 6 DLP 07 1 40f44 ...

Page 6: ...the new type wire tie Reusable wire tie You can pullout this tie by pushing from both sides Figure 7 Figure 8 explains the rest of the tie clip removal You can now movill the cha1J Iis Remove 1m from more toward thlt eal tv r 1 lls0 lip s the mma ning tics Figure 8 DLP 07 1 50f44 ...

Page 7: ... looking from the top HM67 Board Layout Audio Out Figure 9 Now let s examine each of the boards that comprise our chassis We will begin by looking at Figure 10 a photo of the entire chassis taken from a top left viewing angle Comparing Figure 10 with Figure 9 we can see that the photo and graphic representations are identical Therefore as we progress we will use the graphic representation for our ...

Page 8: ...dio Output deVIce for fixed left and Right Analog Audio t Switching for an og inputs TV MicroprocessorfuncUons ATSCINTSC tuning MTS Processor Audio Processor AV Switching Digital light Engine Power to chassis LED functions Remote and Front Keyboard commands Audio processinu except final amp ATSC NTSC tuner on board _ _ _ ft _ __ _ _ _ __ Figure 11 DLP 07 1 70f44 ...

Page 9: ...essing of all Digital Signals j i Developing and Outputting LVDS Signals to the light I engine Control of TV Micro via lie bus lines i Provide an Optical Audio and Theater Link output Control SO card applications Input device for 3 HDMI inputs Figure 12 _1T 1i IIO _IW lf 1 t Audio Power AmplifIcation I I Output to Speakers I 1 1 Of l H Mfi1 eo wd Figure 13 DLP 07 1 R of44 ...

Page 10: ...ll before leaving the shop Once this learning curve is mastered the technician can apply a basic troubleshooting flowchart to any symptom that a customer may describe during hi her initial call requesting service The key to success is to spend a small amount of time talking to the custom r and asking the right questions During this training we will use basic flowcharts to provide enough informatio...

Page 11: ...Work Resolved J a surge protector or power strip is being used No QO directly into wall outlet Is there Another outlet The customer needs to check the wall sWitches in the room If none control the outlet most liKely he needs to cail his electrician or check the electrical br _ Figure 15 1 of 3 2007 Toshiba DLP Television DLP 07 1 If a power strip or surge Protector is being used The customer shoul...

Page 12: ...on DLP 07 1 Dead Set Continued Insure the Following Steps are Taken Plug the TV Into the Outlet used for The second Device Does It Yes Work now No Power Supply 1s Choice Main Modul 2nd Choice Figure 15a 2 of 3 DLP 07 1 11 of44 ...

Page 13: ...Customer No Replace power strip Plug in a known good device and see if the outlet is active The customer needs to check the wall switches in the room If none control the 0 nost likely he No Power Supply nGGds to call his 1 Choice 1 IIectricI 1 or check the electrical breakers It appears the customer has a bad outlet or it Is controlled by a switch Main Module 2nd Choice Figure 15b 3 of 3 DLP 07 1 ...

Page 14: ...by looking Ihrought the lamp door louvers at thot rear of the Sdore moving on have he customer ltnplug the set for O 1 seconds and plug back in Which input s have no picture Select Video Problems Smudges Blotches spot etc are most likely pm le n in the Ught Palh Press uMenu Which Input s Is it Distorted Are Distorted Yes Select Is just the Menu No Distorted Yes I r Select one based on customers an...

Page 15: ...er Menu EnsureJripot is Ensure input is Properly Set for i Propei1ySet for ANT ANT Main Module 1 t Choice Select Cablel Antenna Select Cablel Antenna Confirm Channel i i Confirm Channel I Programming Programming Is No Picture No Ry O d1 Mol d I Main Module Yes Resolved Resolved Figure 16a 2 of 6 DLP 07 1 140f44 ...

Page 16: ...ST be on HDMI1 and the Audio Enter Customer cables MUST be connected MimiJ to the PC HOMI 1 Inputs G Select HDMI1 2 or 3 dopending 011 which input the HDMI cable is connected to Ensure the input selection Is properly set in M th HOM W is running and i l g od the menu working tHcler Is No Picture Restored Digital Seine Bd Resolved Figure 16b 3 of 6 DLP 07 1 15 of 44 ...

Page 17: ...1 or AVZ Is No Picture Restored Main Module Make sure there is flO cable plugged into the S Video jack Make sLlre the Input device is running and in good working order Is Picture No Restored Apply signal to AV1 and select AV1 as Main Input in menu Is No Picture Restored Figure 16c 4 of 6 DLP 07 1 16 of44 ...

Page 18: ...e the Input device is running in good working ordor and connected to the selection Select Video 1 2 made in iI is sl p or 3 Depends on I Menu and input being used Is Yes Picture No Restored If S Video is o r panel only change front panel For Rear mounted Change Main Module Figure 16d 5 of 6 DLP 07 1 17 of44 ...

Page 19: ...Stream input cables Select are connected ColorStream 1 or 2 HD 1 or HD2 Mskio sura the Input device is running and in good working order CS2 Is Is No Picture Yes Yes Picture No Restored Restored Resolved Main Module Figure 16e 6 of 6 Audio Problems Figures 17 through 17e will wc llk us through several paths involved in analyzing audio problems DLP 07 1 18 of44 ...

Page 20: ...ined the k sur the Sound Source f S a good ch t lO defined as a Distortion is input signal complete loss of coming from the AUdio Signal Path DSgable tn tt P tt l Make Sure th Voium satting is at least 1 4 scal9 and the speAkor selecUon is on HJntetrtat OR 0 1 Is The Mute Yes FUnction Active No IS there No Sound using All inputs Main Module No ChOiCe C Which All lnput s have No Sound Select Select...

Page 21: ...weak signa may calise sound to mute THIS IS NORMAL Make Sm the Volu setting is at least i scale and the speaker selection is on Internal OR On Enter CUstomer Menu Ensure Input Is properly set for Cabie or ANT Select Cablef Antenna Confirm Program Tuning Resolved Figure 17a 2 of 6 Main Module DLP 07 1 200f44 ...

Page 22: ...c te l properly double ch r Enter Customer Menu Select HDMI1 2 or 3 Make sure the source is actually HDMI and NOT DVI using an adaptor Is Sound No Restored Main Module Resolved Figure 17b 3 of 6 Make sure the source device and cable ore hooked up properly and in working order HM67 1S7 When using A DVI source with an adaptor the only input that can be used i HOMl and the audio cables MUST b l conne...

Page 23: ...e input that was the cause of the symptom Double check the audio connections for correctness Enter Customer Menu Select AV1 or AV2 No Main Module Resolved Figure 17c 4 of 6 Make Sure the Volume setting is at least h scale and the speaker selection is on Internal OR On DLP 07 1 22 of44 ...

Page 24: ... OSD Menu E Make Sure thu Volume setting Is at least l scale Make sure the audio ami the speaker ecti n cables are plugged into tno is on Internal OR On jacks in the Video 2 section Select S Video Or AV1 Is Sound No Restored Main Module Resolved Figure 17d 5 of 6 DLP 07 1 23 of44 ...

Page 25: ...hat W setting is It least seal the cause of the symptom and the speaker selection is 011 Internal OR 011 Double check the Audio connections for Selel t correctness ColorSbeam 1 or2 Resolved Figure 17e 6 of 6 Error Codes Figure 18 is a graphic of the LED Blink codes used in the 2007 HM67 167 series DLP sets DLP 07 1 24 of44 ...

Page 26: ...n YES o o 9 Fan Stop Detection o o YES 10 IIC Bus Error Light Engine 0 YES Slow 11 IIC Bus Error Slow 0 0 12 Power Protect Detection Fast 0 0 r r 4_ _r r 0 13 Color Wheel 3top v Fast YES 14 Thermo Sensor YES Fast 15 Seine Booting _ 3 0 o Times 16 Upgrade in Progress o 17 Upgrade Successful o o 18 Upgrade Failed o o Figure 18 Used prior to or in conjunction with the flowcharts while talking with th...

Page 27: ...wchart can be perfect pre call analysis may sometime fail and the fact that some customers can t or won t cooperate on the phone we will obviously have to make a service call blind or troubleshoot the SEt because the board we det mined to be the cause of thp symptom did not fix the set To assist us in troubleshooting we have developed a wiring interconnect diagram showing the full run voltages con...

Page 28: ...tter Ballast Light Eng _ _ l Standby Voltages F Fasl Start Mode IPJ Power Save Mode _cs_perived From r 12V_Sig 5V1 SV1 3 3V1 2 SV Direction of Arrows Indicates direction the Signal or source Is being Appl1ed from CO C C F F I F C F I F IF F IF IF IF IF IF FJ IF F F F Figure 20 DLP 07 1 27 of 44 ...

Page 29: ... P i8 Pi9 P20 i2 0V P 23 132V P8i2 Power Formatter P i P2 12 0V P8iA to B Power Audio Out P i P2 P3 P4 31 OV P 9 S OV PB60A to B Main Audio Out P 2 4 5V P 6 4 SV Pi0G Audio Out Speakers PB504 Main IR Board P 4 S OV P 5 4 2V PE80 Main Seine P i i2 0V P 4 S OV p s S OV P 9 Pi0 P1i 3 3V PBi0i Main Seine P 4 3 2V PB102 Main Seine P 4 4 0V P 5 4 0V P20 3 3V PB103 Main Seine P 13 3 3V P i4 3 3V PiG Pi8 ...

Page 30: ...oltages Fast Start Mode Connector From To Pin Numbers Voltages STANDBY Fast Start Mode PV25A Main SideAV P 1 2 4V PB93A Main ide AV P 1 P2 P3 3 3V PB92A Main Front LED P 1 5 0V P706B Main Light Engine P 1 3 3V P 4 2 5V PB80A to B Power Main P 3 2 5V P 6 P 7 5 0V P 17 P 18 P19 P20 12 0V P 23 31V P81A to B Power Audio Out P 1 P2 P3 P4 31 0V P 9 5 0V PB60A to B Main Audio Out P 2 4 5V P 6 4 5V P 8 2 ...

Page 31: ...owe OB_Oet 12V 2007 Toshiba DLP Television DLP 07 1 Main Board Switched Regulated Voltages Protect Circuits 3 3V1 SV1 3 3V1 ICOS Door Switch 12V AC_Oet Powe Sig_Oet IC830 3 3VO PROTECT IC831 6VO VCC_OOR IC832 SV2 9V Figure 24 DLP 07 1 300f44 ...

Page 32: ...harts mentioned above will be used to determine which board boards is or could be the cause of our dead set Note When a set is placed in the Power Saving mode the only voltages made available to the chassis are the voltages necessary for a basic standby condition That means the TV micro EEprom IR receiver Light Engine micro and front LED supplies When a set is placed in the Fast Start mode almost ...

Page 33: ...vice Plan HB occurs when a service call is made and a replacement part is not on site OR when confirmation is desired Does it Yes prior to replacement Work now Plan B No 1 1 Power Supply 1 1 Choice No 5V PB80 1 Pins 6 7 I Main Module Yes I Power Supply 2 d Choice 2 6V PB80 No Pin 3 I I Yes I Main Module r Push Power Yes No I Button I 3VPB80 I I n2 Power Supply Main Module Figure 25 DLP 07 1 320f44...

Page 34: ...s when a service call is made and a Plug the TV Into the replacement part is not on Outlet used for The second Device site OR when confirmation is desired prior to replacement Does it Yes Work now PLANS On PB80 NO P s6 7 Main Module 2 Choice IYes Power Supply i uShPower No Button 3V On PBBO Pin 27 Yes I n J i _ Power Supply Main Module Figure 26 DLP 07 1 33 of 44 ...

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