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NTDPJTV05
TECHNICAL TRAINING MANUAL
N5SS CHASSIS
PROJECTION TELEVISION
TW40F80
Only the different points from the training manual “N5SS chassis” with its file
No. 026-9506 are described on this manual.
For other parts common with “N5SS chassis”, please refer to the original manual
with its file No. 026-9506.
©1997 TOSHIBA AMERICA CONSUMER PRODUCTS, INC.
NATIONAL SERVICE DIVISION
TRAINING DEPARTMENT
1420-B TOSHIBA DRIVE
LEBANON, TENNESSEE 37087
PHONE: (615)449-2360
FAX: (615)444-7520
www.toshiba.
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Contents Page 1 Contents SECTION I: OUTLINE ................................................................................................ 6 1. FEATURE.................................................................................................................... 6 2. MERITS OF BUS SYSTEM...................................................................................... 6 3. SPECIFICATIONS..................................................................................................
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Contents Page 2 SECTION V: WAC CIRCUIT .................................................................................... 37 1. OUTLINE .................................................................................................................. 37 2. CIRCUIT OPERATION .......................................................................................... 37 3. BLOCK DIAGRAM ................................................................................................. 42 4. WIDE AS
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Contents Page 3 SECTION X: DEFLECTION DISTORTION CORRECTION CIRCUIT (SIDE DPC CIRCUIT)............................................................................................... 82 1. DEFLECTION DISTORTION CORRECTION IC (TA8859CP) ....................... 82 2. DIODE MODULATOR CIRCUIT ......................................................................... 83 3. ACTUAL CIRCUIT .................................................................................................. 84 SECTION XI:
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SECTION I: OUTLINE 2. MERITS OF BUS SYSTEM 1. FEATURE 2-1. Improved Serviceability The TW40F80 is a first PJ-TV with a wide screen aspect ratio of 16:9 we introduce to North U.S.A. markets. Most of the adjustments previously made by resetting vari- As the basic chassis N5SS chassis is used. able resistors and/or capacitors can be made on the new chas- sis by operating the remote control and seeing the results on The future of the model TW40F80 is the use of the N5SS the TV screen. This allows s
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3. SPECIFICATIONS C-Chassis Model TW56F80 TW40F80 TP61F90 TP61F80 TP55F80 TP55F81 TP50F90 TP50F60 TP50F61 TP50F50 TP50F51 CRT 7" 7" 7" 7" 7" 7" 7" 7" 7" 7" 7" CRT Source Hitach Hitach Hitach Hitach Hitach Hitach Hitach Hitach Hitach Hitach Hitach Remote H/U Intell Univ Intell Univ Univ Univ Intell Univ Univ. A-Univ A-Univ RMT Keys 52 key 36 key 52 key 36 key 36 key 36 key 52 key 36 key 36 key 42 key 42 key PIP 2-TN 2-TN 2-TN 2-TN 2-TN 2-TN 2-TN 2-TN 2-TN 1-TN 1-TN Dolby
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4. FRONT VIEW POWER indicator POWER POWER button Press to open the door. ANT / VIDEO button ** ENTER button Behind the door ANT/ VOLUME CHANNEL S-VIDEO VIDEO AUDIO VIDEO L/MCNO R DEMO ENTER MENU IN-VIDEO 3 MENU button CHANNEL / buttons / buttons VIDEO 3 INPUTS DEMO button VOLUME / buttons / buttons Fig. 1-1 Note: [No] Owner's manual page. 7
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5. REAR VIEW TV front Behind the door S-VIDEO VIDEO AUDIO L/MCNO R IN-VIDEO 3 VIDEO / AUDIO INPUT jacks (VIDEO 3) S-VIDEO INPUT jack (VIDEO 3) Fig. 1-2 S-VIDEO INPUT jack (VIDEO 1) TV rear VARIABLE AUDIO OUTPUT jacks ANT (75 ½) AMP S-VIDEO VAR R L ACC AMP Y VIDEO TV C4 VIDEO (+) (+) L L VIDEO (Ð) (Ð) AUDIO VIDEO/AUDIO AUDIO AMP R EXT SPEAKER R R EXT INT MAIN SPEAKER VIDEO1 VIDEO2 DVD N CUT VIDEO / AUDIO VIDEO / INPUT jacks AUDIO (VIDEO 1) EXTERNAL OUTPUT SPEAKER jacks VIDEO / AUDIO terminal
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POWER 6. REMOTE CONTROL VIEW Aim at the remote sensor on the TV RECALL* [ 26 ] TIMER* [ 38, 39 ] PIC -SIZE RECALL TV / CABLE / VCR switch [ 15 ] TV/VIDEO MUTE POWER [ 20 ] Set to " TV " to control the TV. TV / VIDEO* [ 55 ] MUTE* [ 26 ] 2 3 1 CH CHANNEL / [ 25 ] 5 6 4 CH RTN* [ 26 ] Channel Number* [ 25 ] 8 9 7 CH RTN VOL VOLUME / [ 25 ] 0 ¥ ENT 100 ADV/ MENU [ 18 ] EDS* [ 27 ] EDS MENU POP CH POP CH * [ 40 ] ENTER [ 19 ] /// [ 18 ] FAN * [ 46 ] FAV FAV ENTER POP CH * [ 40 ] FAN * [ 46 ] RESET
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7. CHASSIS LAYOUT 10 7 -1: NEW OSD 4 -1: A.V -2: FRONT SURROUND 7 -2: SPEAKER 4 : 5 -1: CRT ÐD(R) 5 -5: FRONT CON 5 -2: CRT ÐD(G) 5 -6: SVH 5 -3: CRT ÐD(B) 5 -4: FRONT LED MODE1 TUNER DOLBY DSP F.SUR COHB FDS N.OSD STARSIGHT TW40F80 2 3DYC TW56F80 2 PRO 4CH 3DYC PC BOARD (chip) 249 330 242 330 249 7 : NEW OSD/ 10 : DIGITAL 14 :AUDIO LIVE 4 : AV.EXT SPK FRONT SURROUND 1 : MAIN CONVER 6pcs 2pcs 1pcs 5 - 4 : FRONT-LED 2pcs CHIP SINGLE FACED 1pc CHIP DOUBLE FACED 242 242 TW56F80 ONLY 330 249 33
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8. CONSTRUCTION OF CHASSIS A110 A505 BIDT2 A401 4x12 2pcs A110B 2pcs A522 BIDT2 4X12 18pcs K601 A126 A520 PP 5x18 4pcs A110A A101 A517 PBI 4X16 A512 A517 8pcs BIDT2 4x12 6pcs A201 A351 A353 Z410 A902 B202 A127 A521 BRT TBS 4x16 2pcs A502 PMM 4x16 4pcs A128 W661~ PMM 4x16 A205 W664 2pcs A506 BRB TBS A501 4x16 4pcs BTA 4x16 16pcs A515 A106 PMM 4X16 4pcs A508 BIDT2 4x12 2pcs A516 K511 PMS 3.8x28 A523 3pcs PMM 4x16 2pcs A202 A102 A509 A519 BTA 4x16 4pcs BIDT2 4x12 A107 5pcs A511 L462~ P
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SECTION II: TUNER, IF/MTS/S. PRO MODULE 1. CIRCUIT BLOCK IF/MTS/S.PRO Module MVUS34S EL466L SIF output Sound VIF/SIF SAW Multiplex S.PRO Circuit Tuner Circuit Filter Circuit RF AGC C-IN R-IN L-IN TP12 TV TV Video output R-OUT L-OUT C-OUT R-OUT (L+R) L-OUT To A/V switch circuit AFT output -OUT Fig. 2-1 Block diagram 1-1. Outline (5) VIF/SIF circuit uses PLL sync detection system to (1) RF signals sent from an antenna are converted into in- improve performances shown below: termediate frequency
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1-3. Audio Multiplex Demodulation Circuit Then, both are fed to the matrix circuit. At the same time, each of the stereo pilot signal fH and the SAP pilot signal The sound multiplex composite signal FM-detected in the 5fH is also demodulated to obtain an identification voltage. PIF circuit enters pin 12 of HIC (hybrid IC) in passing With the identification voltage thus obtained and the user through the separation adjustment VR RV2 and amplified. control voltage are used to control the matrix. Af
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1-4. A.PRO Section (Audio Processor) All these processing are carried out according to the BUS signals sent from a microcomputer. The S.PRO section has following functions. Fig. 2-3 shows a block diagram of the A.PRO IC. (1) Woofer processing (L+R output) (2) High band, low band, balance control (3) Sound volume control, cyclone level control (4) Cyclone ON/OFF TA1217N 127 29 22 32 36 30 9 28 8 34 26 L out Lin BALANCE TONE CONTROL Rin 30 25 R out Center 2 Cin VOLUME LEVEL C out 18 W out 10 Woofe
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Configuration of the audio circuit and signal flow are given in Fig. 2-4 A/V PCB VIF+MTS+S.PRO FOR POP MODULE ICV01 IF MODULE R 12 EQ 6 R L 29 CHILD MOTHER TV R 31 AUDIO TV L L 14 ER 7 2 L L PIP OUT R L PIP VIDEO 1 11 L OUTPUT 1 (AUDIO) (TW40F80 NOT USE) R R VIDEO 1 13 R R L VIDEO 2 3 L OR VIDEO VIDEO 2 9 DVD OUTPUT R Q601 VIF+MTS+A.PRO TERMINAL R R L MODULE VIDEO 3 L 15 R VIDEO 3 25 + 2 11 (FRONT INPUT) R OUT 17 R FRONT 35 AS 16 R R W OUT 22 SURROUND AR 18 L 37 UNIT L L L OUT 24 + 5
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2. POP TUNER Label Name Lot No. 1 15 TUNER SAW VIF/SIF SECTION FILTER CIRCUIT Terminal No. Name 1NC RF AGC 2 32V 3 S-CLOCK AFT VIDEO AUDIO OUTPUT OUTPUT OUTPUT 4 S-DATA 5NC Fig. 2-5 6 ADDRESS 75V 8 RF AGC 2-1. Outline 99V The POP tuner (EL922L) consists of a tuner and an IF block 10 AUDIO integrated into one unit. The tuner receives RF signals in- 11 GND duced on an antenna and develops an AFT output, video 12 AFT output, and audio output. 13 NC The tuner has receive channels of 181 as in the tu
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SECTION III: CHANNEL SELECTION CIRCUIT 1. OUTLINE OF CHANNEL SELECTION CIRCUIT SYSTEM The channel selection circuit in the N5SS chassis employs POP and Double Window signal processing (QY03), IC for a bus system which performs a central control by connect- closed caption control (QM01), IC for WAC control (QX01), ing a channel selection microcomputer to a control IC in IC for 3D-YCS (QZ01), IC for AUTOLIVE (QK06). each circuit block through control lines called a bus. In the Differences from N5
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3. MICROCOMPUTER • Self diagnosis function which utilizes ACK function of Microcomputer TMP87CS38N-3320 has 60k byte of ROM 2 I C is equipped capacity and equipped with OSD function inside. • Function indication is added to service mode. The specification is as follow. • Remote control operation is equipped, and the control • Type name : TMP87CS38N-3320 by set no touch is possible. (Bus connector in the con- • ROM : 60k byte ventional bus chassis is deleted.) • RAM : 2k byte • Substantial self d
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4. MICROCOMPUTER TERMINAL FUNCTION TMP87CS38N3320 (QA01) VDD VDD GND 1 GND 42 I ACP BAL 2 P57 I 41 P40 (PWM0) O P32 SS VD REM OUT 3 P41 (PWM1) I 40 2 O MUTE P57 I 39 I C STOP 4 P42 (PWM2) O SDA1 SP MUTE 5 SDA0 IO 38 P43 (PWM3) IIC- BUS NC O SCL1 6 P44 (PWM4) SCL0 O 37 POWER O (TC3)P31 I SYNC AV1 7 P45 (PWM5) 36 LED O 8 (RXIN)P30 I 35 RMT IN P46 (PWM6) SSRST O EXT SP 9 P47 (PWM7) P20 I 34 DVD CONT I RESET RESET 10 P50 (PWM8/TC2) I 33 O O SCL0 11 P51 (SCL1) XOUT 32 XOUT IIC -BUS IO P52 (SDA1) X
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<< MICROCOMPUTER TERMINAL NAME AND OPERATION LOGIC >> No. Terminal Name Function In/Out Logic Remarks 1 GND 0V 2 BAL INPUT BALANCE Out PWM out 3 REM OUT REMOTE CONTROL Out Remote control output SIGNAL OUT 4 MUTE SOUND MUTE OUT Out Sound mute output 5 SP MUTE SPEAKER MUTE Out In muting = H 6 DEF POW Out 7 POWER POWER ON/OFF OUT Out Power control In ON = H 8 LED POWER LED OUTPUT Out Power LED on-control LED lighting = L 9 SS RST STARSIGHT RESET Out Reset = L 0V 10 DVD CONT DVD CONTROL Out DVD = L
