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Panasonic CT-32SX31UE manual

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Table of contents for the manual

  • Page 1

    Panasonic The serv ice tech nician i s required to read an d follo w the “ Safety Precautions ” an d “ Important Safe ty Notice ” in t his Main Ma nual. Service Manual Color Television (NA8ML) Main Manual Copyright 2001 b y M atsushita Elec tric Co rporatio n of Americ a. All rights re served . Unautho rized c opying and di stribut ion is a[...]

  • Page 2

    - 2 - Important Safety Notice Special c om pon ents ar e us ed in th is te le vi si on s et which are impo rta nt for safety. These parts are i dentifi ed on the schemat ic di agram by the sy mbol and p rinted i n BOLD TYPE on the replaceme nt part list. It is essential that these criti cal parts ar e replaced wi th the manu facturer ’s specified[...]

  • Page 3

    - 3 - Important Safety Notice . . . . . . . . . . . . . . . . . . 2 Safety P recautions . . . . . . . . . . . . . . . . . 2 General G uidelin es . . . . . . . . . . . . . . . . . 2 Leakage C urrent Cold Check . . . . . . . . . 2 X-ray Radiat ion . . . . . . . . . . . . . . . . . . . . 2 Horizo ntal Osci llator Disable Circ uit Tes t . . . . . . . .[...]

  • Page 4

    - 4 - Service Notes Leadless Chip Component (surface mount) Chip compo nents m ust be replac ed with iden tical chi ps due to criti cal foil trac k spac ing. There a re no holes in the board to mount s tandard transis tors or d iodes. Some chi ps ca pacitor or resist or board solde r pads may hav e holes t hroug h the boar d, however the hol e diam[...]

  • Page 5

    - 5 - Service Notes (Continued) IMPORT ANT : T o protect against poss ible da mage t o the soli d sta te devic es d ue to ar cing or stat ic discharg e, make cer tain th at all groun d wires and CTR DAG wir e a re se cure ly conne cted. CAUTION: The power supply ci rcuit is abov e earth ground an d the chas sis cann ot be pol arized. Us e an isolat[...]

  • Page 6

    - 6 - Receiver Feature T able FEA TUREMODEL CT-32SX31E/UE/CE CT -36SX31E/UE/CE Chassis NA8ML T unning system 96K # of channels 181 Menu langua ge Eng/Span/Fr Closed Cap tion X V-Chip (USA/CANADA) X 2RF X Remote M odel # EUR51 1500 Picture tube AM EC Comb Filter 3 DIG VM X V/A norm X Color T emp X MTS/SAP/DBX X BASS/BL/TRE Control X AI Sound X Surr[...]

  • Page 7

    - 7 - Location of Control s (Receiver) Quick Reference Control Operation Quick Reference Control Operation Power Button - Pre ss to turn ON or OFF . V olume Buttons - Pr ess to ad just S ound Lev el, or to adjust Audio Menus , Video Menus, and se lect oper ating featur es when me nus a re di splayed Channel Buttons - Pre ss to s elect progra mmed c[...]

  • Page 8

    - 8 - Location of Controls (Rem ote) Figure 4. Location of Controls (Remote). POWER Bu tton Press to turn O N and OFF . MUTE Button Press to mu te sound. A se cond p ress r esum es so und. Press also to acc ess and del ete Closed Caption di sp lay . VCR, DVD, LD/CD, AUX, TV , CBL, DBS, RCVR Component fu nction but tons VOL (volume) Buttons Press t [...]

  • Page 9

    - 9 - Disassembly for Ser vice Back C over Remove all the screws mar ked with an arr ow( ) from the b ack of th e Receiv er . Note: Screw conf igura tion, type , and number of scr ews vary depending on th e model of th e Recei ver serv iced an d the a pplicati on; var ious m odels are cove red in t his M anual. Us e sam e hardwar e when re assembl [...]

  • Page 10

    - 10 - Disassembly for Serv ice (Continued) Note: T o remov e the fou r bracket s hold ing the dega uss coi l from the corner s of the CRT , first remo ve the CRT from the cabi net, then r emove the Br ackets by press in g th e ta b o n the b r ack et an d pull upw ards. The se Bra ckets a re include d in the Deg auss Co il Kit, for part numbe r , [...]

  • Page 11

    - 11 - Back Cover Rem oval Figure 8. B ack Cover Removal 4 scre ws at t op edg e 1 screw at low er 1 scre w left corner 1 scr ew by antenna jacks 1 screw 1 screw 1 scre w 1 scre w at lower right corn e r[...]

  • Page 12

    - 12 - Chassis Ser vice Adjustment Pr ocedures All service adjustments are factory preset and should not require adjustment unles s controls and/or associated components are replace d. Note: Connect t he ( -) lead of th e vo ltmeter to the appr opriat e g round. Use heat s ink when t he HOT ground s ymb ol ( ) is used . Otherw ise, use COL D grou n[...]

  • Page 13

    - 13 - Purity and Convergence Procedure Adjustm ent is n ecessar y only i f the CRT or the deflecti on yoke i s replaced or if the s etting was disturb ed. The c omple te procedur e con sists of: 1. V ertical Ra ste r Shift Adjustme nt. (Only for Models with Purity/Convergence Assembly with 4 Pair s of Rings) . 2. Initia l static conver gence. 3. S[...]

  • Page 14

    - 14 - Initial Center Static Convergence Connect a do t/cross hatch gener ator to the Receiv er and tune in a signal . Ob serve miscon verg ence at center of the sc reen only . Adjust the R&B pole magnets; by se parating tabs a nd rotatin g to co nverge blue with r ed. Adjust the R&B and R&B&G pole ma gnets: b y separa ting tabs and[...]

  • Page 15

    - 15 - Y H Adj ust men t (V R2 for Vertic al dynami c convergence) 1. Apply a cross hatc h patt ern. 2. Adjust c ontra st and brightnes s custo mer con trols to obtain a corr ect pi cture. 3. With a dri ver Adj ust VR 2 (located in deflec tion yo ke board Fig. 19) to obtain a proper corverge nce at left and righ t side of th e scre en. (S ee Fig. 1[...]

  • Page 16

    - 16 - R G B As the yoke is tilted vertically , the rasters produced b y the outside guns rotate in opposit e directions. Figure 17 . V ertical Y oke Movem ent RGB Raste r produc ed from one of the outside electron beams Rast er fr om the ot her si de el ect ron beam Static convergence m agnets are set for ce nter conv erg enc e As the yoke is tilt[...]

  • Page 17

    - 17 - Serviceman Mode (Electron ic Controls) This Rec eiver has electr onic techn ology using the I²C B us Conce pt. It per forms a s a con trol fun ction an d it replac es many m echani cal con trols. In stead o f adjustin g mech anica l contro ls in dividua lly , m any of th e control functions are now perfo rmed b y using “On Screen Displ ay[...]

  • Page 18

    - 18 - Press the Power Button on t he Remote Control to sel ect the S erviceman Ad justment . For Adjustments: Sub-Data Adjus tme nt Default Level B00 SUB-COLOR 31 B01 SUB-TINT 40 B02 SUB-BRIGHTNESS 40 B03 SUB-CONTRAST 16 B04 SUB-TINT VIDEO 16 B05 SUB-COLOR VIDEO 22 B06 SUB-TINT COMP 63 B07 SUB-COLOR COMP 28 B08 SUB SHARP TV/VIDEO 10 B09 SUB SHARP [...]

  • Page 19

    - 19 - Press the Power Button on the Remote Control to s elect the S erviceman Adjustm ent For Adjustments: Geo metr y Ad jus t men t s Default Level D00 H POSITION 13 D01 V SIZE 37 D02 V S C O RRECTION 5 D03 V LIN CO RRECTION 8 D04 E/W TRAPEZIUM 9 D05 V AGC 1 D06 V POSITION 1 D07 V CENTERING 65 D08 V CENTERING DAC SW 0 D09 V-BLK ST ART 12 D0A V-BL[...]

  • Page 20

    - 20 - Press the Power Button on the R emote Control to select th e Serviceman Adju stment For Adjustments: PIP Adjustment Default Level P00 PIP COLOR 53 P01 PIP TINT 64 P02 PIP BRIGHTNESS 1 1 P03 PIP CONTRAST 58 P04 PIP POS V _TOP 26 P05 PIP P OS V_BOTTOM 143 P06 PIP POS H_LE FT 10 P07 PIP POS H_RIGHT 101 P08 PIP POS 26 P09 PIP POS 160 P0A PIP POS[...]

  • Page 21

    - 21 - Press the Power Button on the Remote Control to s elect the S erviceman Adjustm ent For Adjustments: 1. Press Channel Up/Down on t he Remote Control to sele ct one of the avail able Serv ice Adj ustments ( a i n Fig. 20). Note: Write Down the or igina l value set ( b in Fig. 20 ) fo r each address before modi fyi ng anyt hing . It is easy to[...]

  • Page 22

    - 22 - Press the Power Button on the Remote Control to s elect the S erviceman Adjustm ent For Adjustments: X Option Adjustment Default Level X00 V ENHANCER 3 X01 V ENH NL 1 X02 H PEAKING GAIN 2 X03 V CORING 1 X04 C TRAP GAIN 0 X05 GEO MAG CEN 179 X06 GEO MAG GAIN 10 X07 H LOCK 1 X08 H LOCK L 70 X09 H SEP A 1L 313 X0A H SEP A 2L 266 X0B H LOCK W 0 [...]

  • Page 23

    - 23 - T o C heck P urit y: Pre ss the Recall Button on the Remote Control wh en in Servic eman Mode ( red “CHK” is displa yed) to enter the Purity Fie ld Check Mod e. Press Recall again to selec t desired field. NORMAL SCREEN WHITE SCREEN RED SCREEN GREEN SCREEN BLUE SCREEN Figure 21. Purit y Check Field M o de . Helpful Hints Entering Service[...]

  • Page 24

    - 24 - Instructi onal Flow Chart f or Serviceman Mode Adj . needed? NORMAL MODE Momentar ily sh ort FA1 to FA2 . Press Action + V olume Up S imultane ously ( ON R eceiver ) Adj. needed? WHITE SCREEN (ON REMOTE) RECALL WHITE SCREEN RED SCREEN GREEN SCREEN BLUE SCREEN POWER (ON REMOTE) AGING MODE • Y ellow “CHK” appea rs in uppe r left corn er [...]

  • Page 25

    - 25 - Instructiona l Flow Cha r t for Servic eman M od e - Continued Adj. needed? CUT-OFF ADJUSTMENTS. C ITEMS. A N Y PINCUSHION ADJUSTM ENTS. D ITEM S. Adj. needed? N Y MTS A DJUSTM ENTS. M ITEM S. Adj. needed? N Y POWER (ON REMOTE) POWER (ON REM O T E) POWER (ON REMOTE) ON REMOTE CONTROL TO SELECT ADJUSTMENT ON REMOTE TO ADJUST THE LEVEL CH VOL [...]

  • Page 26

    - 26 - Instruc tional F low Cha rt for Servicema n Mode - Conti nued Adj. needed? COMB-FIL TER AD JUSTMENTS. X ITEMS . B N Y POWER (ON RE MOTE) EXIT C N IMPOR T ANT NOTE: Always Ex it the Service man Mode Followin g Adjust ments. Press Action a nd Power on th e Rece iver simult aneous ly for at leas t 2 secon ds. PIP ADJU STMENTS . P ITEM S. Adj. n[...]

  • Page 27

    - 27 - Service Adjustments (Elect ronic Con trols) Sub-Contrast Adjustment Servicem an DAC Adjustment (B 02, B03) This adjustme nt is factory set. Do not adjus t unle ss repairs are mad e to asso ciated circuit , the CRT Board or when the CRT is replace d. Preparation: 1. Apply a Black -White patte rn. 2. Set the pi cture s ettings to normal a nd c[...]

  • Page 28

    - 28 - Procedure: 1. Connect th e oscilloscop e to TPY 1. 2. A pply a c olor ba r signa l in main and PIP (PIP on). 3. In the Servicem an Mode for maki ng electronic adjustme nts, select the DAC adju stment (P03) for PIP Sub-Sub contrast so that child (PIP) le vel is 90% of parent (M AIN) signal (See Fig. 29) Color T empe rature A djustment (B/W T [...]

  • Page 29

    - 29 - Service Adjustmen ts (Electro nic Controls, cont. ) Horizontal Centering (D00) This Adj ustmen t helps to c enter the p icture hor izontal ly Preparation: Connect a monoscop e patte rn si gnal. Procedure: 1. In the Servicem an Mode for maki ng electronic adjustme nts. Sele ct the Hori zontal Cen tering Adjustm ent DAC (D00) and adjust until [...]

  • Page 30

    - 30 - V-Correction Adjustment (D02) Preparation: 1. Apply a Cr os sha tch pattern. 2. A djust (D01) s o that V-Si ze is r egula r size. 3. If b-a<-1.5m m (in top an d bottom), i ncrease (D02) by one s tep and adjust (D01) so tha t V-Si ze is regular; r epeat steps until b-a ≤ 1.5 mm 4. If b-a> -1.5m m (in t op an d bottom) , d ecr e ase (D[...]

  • Page 31

    - 31 - Service Adjustmen ts (Electro nic Controls, cont. ) Clock Adjustment (S07) Preparation: Connect th e frequen cy cou nter to TP S1 (IC00 1 pin-13) and col d ground ( ). Note: Frequenc y Count er probe c apacitanc e shoul d be 8pF or less. Procedure: 1. Measure TPS1 (IC0 01 pin 13) for the frequenc y of the wav eform and record th e readin g. [...]