Table of Contents
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Projection Television
Technical Training Manual
V19 CHASSIS
WS-55859
WS-55909
WS-65909
WS-65869
WS-73909
MITSUBISHI ELECTRIC
MITSUBISHI DIGITAL ELECTRONICS AMERICA, INC.
V21 CHASSIS
WS-48511
WS-65511
WS-B55
WS-65611
WS-55511
WS-65711
WS-55711
WS-65712
WS-73711
T
ECHNICAL
RAINING
2002
DIGITAL
AUDIO
OUTPUT
IR
EMITTER
HOME
THEATER
CONTROL
MEMORY
CARD
IEEE
-1394
INPUT/
OUTPUT
ANT-DTV
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Table of Contents
Related Manuals for Mitsubishi V19-V21
Summary of Contents for Mitsubishi V19-V21
- Page 1 Technical Training Manual DIGITAL AUDIO OUTPUT EMITTER HOME THEATER CONTROL MEMORY CARD IEEE -1394 INPUT/ OUTPUT V21 CHASSIS V19 CHASSIS WS-55859 WS-48511 WS-65511 ANT-DTV WS-55909 WS-B55 WS-65611 WS-65909 WS-55511 WS-65711 WS-65869 WS-55711 WS-65712 WS-73909 WS-73711 MITSUBISHI ELECTRIC MITSUBISHI DIGITAL ELECTRONICS AMERICA, INC.
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Page 3: Table Of Contents
V19-V21 TRAINING MANUAL TABLE of CONTENTS Chapter 1 ... Introduction Features ......................1-1 External Inputs & Outputs ..................1-4 Remote Control ....................1-6 LED Diagnostics ....................1-6 Chapter 2 ... NetCommand NetCommand ....................2-1 IEEE-1394 Devices ..................2-1 Remote Operational Mode ................. 2-1 Chapter 3 ... - Page 4 DM Module Control Circuitry ................6-7 Software Update Procedure ............... 6-9 DM Module Replacement ................. 6-10 Chapter 7 ... Video/Color Circuitry Overall Block Diagram ..................7-1 NTSC Signa Selection ..................7-2 PCB-SIGNAL Video Color Signal Path .............. 7-3 3DYC/Main Decoder Circuitry ................7-4 YCbCr Select Circuitry ..................
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Page 5: Chapter 1
WS-55711 WS-65712 WS-73909 WS-73711 The V19 and V21 are Mitsubishi’s high end Projection • IR Repeater Outputs TV chassis for 2 years. Specific models for each chas- • PIP-POP features (V19) sis type are listed above. Both chassis types have fea- •... - Page 6 Terminology Defitition Advanced TV Audio Video AV/C 1394 AV Control Format Digital Control Module Full Audio Video HAVi Home Audio Video Interoperability (Digital AV Devices, 1394 compliant) IEEE-1394 Digital Transmission System using cables Infra-red Legacy Devices AV System 5 Compatible Components Cable HDTV Signal Copy Protection (mainly used in Cable) Table 1-1: Definititions...
- Page 7 When components are 1394 compatible, interconnec- the TV by one of two methods. tion of the units is simplified. Figure 1-1 illustrates how 1) Using the corresponding Mitsubishi remote the 1394 system simplifies interconnection between the layer, Cable, VCR, DBS or DVD.
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Page 8: External Inputs & Outputs
Timer Recording 2) One Recording allowed. Mitsubishi's HS-HD2000U and HS-HD1100U, D- 3) No Recordings allowed. VCRs includes HDTV recording capability and HAVi. However it must be connected to an external ATV Re- At present, only QAM (Digital Cable Signals) are coded ceiver with a IEEE-1394 interface, such as in the V19 with 5C Copy Protection. -
Page 9: Display Formats
are still available even though a Set Top Box is not needed • ANT-DTV … Antenna or Cable Input (ATSC to receive HD broadcasts. In the V19 these inputs are or QAM) mainly used to connect a Digital Broadcast Satellite •... -
Page 10: Remote Control
all five Display Formats can only be accessed when the PIP-POP V21 has multi-PIP capabilitys. Only 480i signal source is 480i. When the source is 480p, only format signals can be selected for POP/PIP main and Standard and Narrow can be activated, and when the sub pictures. -
Page 11: Led Diagnostics
The Remote Hand Unit for the V19 appears the same The LED Diagnostic Mode, used in some previous as that in previous models, refer to Figure 1-7. How- models is carried over in the V19 and V21 with some ever there are two differences. additional features. -
Page 13: Chapter 2
Chapter 2 NetCommand The NetCommand feature in the V19 and V21 is an IEEE-1394 Devices enhanced user simplified Home Theater Control Sys- The TV automatically detects when an IEEE-1394 de- tem. It provides graphic control of an entire Home The- vice is connected. -
Page 15: Chapter 3
Chapter 3 Disassembly & PCB Locations There are no radical changes in the disassembly of Figure 3-1 shows one major change to the Light Box V19 models. Figure 3-1 shows the cabinet rear dis- assembly, the addition of the Digital Module (DM) assembly for V19 models. -
Page 16: Main Chassis Pcb Location
Accessing The Main Chassis NOTE: The DM Module must be connected to the main chassis, or the TV will not switch On. The Main Chassis can still be accessed as is in previ- ous models. Main Chassis PCB Locations 1) Loosen wire ties on cables to the CRTs, front panel, speakers, etc. - Page 18 MODULE MODULATOR POWER SUPPLY TUNER FLASH CARD SLOT COVER Figure 3-5: DM Module Main Components...
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Page 19: Chapter 4
Chapter 4 Adjustments Chassis Option Menu Adjustment Mode Convergence Mode OSD Position 1-3-7-0 2-3-5-7 2-3-5-9 <6><5><4> Adjust Mode " " " " 1-2-7-0 1-2-5-7 1-2-5-9 <6><5><4> " " " " " 0-1-7-0 0-1-5-7 0-1-5-9 <6><5><4> " 1-3-7-0 2-3-5-7 2-3-5-9 <6><5><4> "... -
Page 20: Adjustment Mode
Adjustment Mode Outside of the activation code, the procedure for the "Adjustment Mode" is the basically same as in previous models. Figure 4-1 illus- trates the "Adjustment Mode" procedure. One of the changes in the "Adjustment Mode" is the on screen nomenclature used for some of the "Adjustment Functions. - Page 21 Note: To produce the internal crosshatch with Note: In an Adjustment Mode, if the data a black background: changes too fast ... Change the Remote to the 1) Turn off Video Mute. NetCommand mode. (Hold "Power" and 2) Select a source with no signal. press "9-3-5"...
- Page 22 Adjustments Refer to the Service Manual for specific adjustment pro- cedures.
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Page 23: Chapter 5
Chapter 5 Power Supply The above block diagram shows the main sections sis. The DM Power Supply is internal to the DM Mod- of the Power Supply circuitry. As in previous mod- ule. It receives power from the Standby 12V supply els, two types of DC supplies are generated, Standby and generates DM 3.3V and DM 5V supplies. - Page 24 4) Feedback for regulation is from the STBY 12V Standby Supplies Regulator supply through IC9A21 and PC9A20 to pin 5 Figure 5-1 illustrates the Standby Switch Mode Regu- of the IC9A20. lator. Since its’ operation is similar to that in previous 5) Over Current Protection is provided by models, a lengthy description is not required.
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Page 25: Switched Supplies Switch Mode Regulator
DC Standby supplies are generated in the secondary Switched Supplies Regulator circuits of T9A20, these include STBY 6V, STBY Figure 5-3 shows the Switched Supplies Switch Mode 12V and STBY 32V. STBY 5V supplies are de- Regulator. Except for component nomenclature its’ rived from the STBY 12V, and STBY 28V from the operation is the same as the Standby Regulator.: STBY 32V. - Page 26 When the P-ON1 line goes High the turn On sequence • Q9A50 conducts supplying rectified voltage from D9A27 in the Standby Regulator to pin • Q9A51 conducts 4 of IC9A50. • Relay K9A50 closes, removing current • Additional voltage is added to the Startup limiting resistor R9A02 (refer to Figure 1).
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Page 27: Dm Power Supply
When P-ON2 goes High, it turns Q9A21 Off: ule. The STBY 12V also provides power for the Regu- • Allowing Q9A20 to conduct, generating the lator circuitry in the DM Power Supply. SW 12V supply. • The SW 12V supply enables IC9A22, which The DM Regulation circuitry generates two supplies outputs the SW 5V supply. - Page 28 A sample of the 3.3V supply is fed back to pin 5 of generate 5 volts. To generate 5 volts the secondary IC9B00 for regulation. Regulation is achieved by winding is clamped at 3.3 volts by Q9B02. controlling the PWM of the Gate drive signals. The LGATE output of IC9B00 supplies Gate drive The push-pull circuitry output is also used to gener- for Q9B02.
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Page 29: Dc Supply Source Locations
DC Supply Source Locations Table 5-1 shows the Power Distribution for the 3.3V through 9V supplies, and Table 5-2 for the 9VS to The DC supplies shown in Figures 5-1 and 5-3 are 220V supplies. The tables indicate the estimated located on the PCB-POWER. - Page 30 Voltage supply derivation paths: Supply Path Source Linear surface mount regulator on T9A20 -> 6VS -> IC9C50 -> 3.3V 3.3V PCB-3DYC Linear surface mount regulator on T9A20 -> 6VS -> IC8E01 -> 3.3V 3.3V PCB-CONV GEN Linear regulator (heat sink required) T9A20 ->...
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Page 31: Chapter 6
DM µPC over a bidirectional communication link. The DM µPC generates the required commands and The main Preamp amplifies signals from a Mitsubishi directs them through the TV µPC to the appropriate Remote. The signals are filtered and directed to an IR circuitry. -
Page 32: Input Command Circuitry
TV µPC over the DM-RXD line. Jacks. System 5 enables Home Theater control us- ing only the TV later of a Mitsubishi Remote. Remote commands from a Mitsubishi remote are amplified and directed to the RMC input of the TV Input Command Circuitry µPC. -
Page 33: Serial Data Lines
Serial Data Lines • C-SDA … Controls the Convergence circuitry Figure 6-2 illustrates the Serial Data lines used in the • SDA-3D … Controls the 3DYC and Main Control Circuitry. There are five I C bidirectional data Decoder circuitry. • SDA-STBY … Controls the Tuners, A/V lines used: •... -
Page 34: Dc Supplies
Note that the SDA-MN and SCL-MN signals to the DC Supplies 2HDW circuitry are routed through IC7A04 and Figure 6-3 shows the DC supplies for the TV µPC cir- IC7A03, respectively. Both of the ICs are level shift cuitry. The TV µPC requires a 5 volt DC supply. The ICs, reducing the signal amplitude from the 5 volt STBY 12V supply is the source for the Control cir- range to 3.3 volts. -
Page 35: V-Chip Blocking Circuitry
IC, IC7A02, generates a delayed reset pulse when Both Reset commands are routed through IC7B80, that power is applied. functions basically as an AND gate. This enables the front panel Manual Reset button to Reset both µPCs. IC7A02 is a Reset Watchdog type of IC. When the µPC is functioning, pulses are output at pin 73 of V-CHIP Blocking Circuitry IC7A00. -
Page 36: Ac-Off Circuitry
Figure 6-5 shows the V-Chip Blocking circuitry in the The AC signal applied to Bridge Rectifier D9A01 is V19. Main picture V-Chip circuitry is in the TV µPC. monitored. D9A01 is the DC source for both Standby Main picture Y signal is input to IC7A00 at pin 100. and Switched Regulators. -
Page 37: Additional Inputs And Outputs
Name Pin No. Purpose AFT1 Main Tuner Tuning AFT2 Sub Tuner Tuning AC-OFF Loss of AC Power H-SYNC Horizontal Sync DM-DET DM connected Main Tuner Signal Present Sub Tuner Signal Present SHORT Power Supply Short V-BLANK Video is blanked VSYNC Vertical Sync XRAY Shuts the TV Off... - Page 38 All On Screen Display (OSD) signals, except Conver- The DM µPC communicates with the TV µPC through gence OSD, are generated in the DM OSD circuit. the System Interface and UART (Universal Asynchro- When the main picture source is digital, from the ATV nous Receiver Transmitter) circuitry.
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Page 39: Software Update Procedure
ables digital data stream transfer between 1394 units in Figure 6-8 shows the DM Module Rear Panel. To the Home Theater setup. access the Flash Card slot, remove the Flash Card Cover by removing the mounting screws. This ex- There is one additional external connection shown poses the slot for the Flash Card and a Blue button. -
Page 40: Dm Module Replacement
E2P MODULE Figure 6-10: E2P Module Location DM Module Replacement Most user and service adjustment data is stored on the the general location of the E2P Module Figure 6-11 internal E2P Module. Before installing a replacement shows a close up of the E2P Module plugged in. DM Module. - Page 41 E2P MODULE Figure 6-11: E2P Module Plugged In Figure 6-12: E2P Module Unplugged 6-11...
- Page 42 6-12...
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Page 43: Chapter 7
Chapter 7 Video/Color Circuitry The above Simplified Block Diagram represents the POP features are only possible when both the main and Video/Color circuitry in the V19/V21 chassis. The ana- sub picture signals are 480i format. 480p signals are log section of the circuitry is similar to that in the V17 only processed in the 2HDW circuit when a display for- and V18 chassis. -
Page 44: Ntsc Signa Selection
NTSC Signal Selection IC2K00 selects main and sub picture signals from IC2L00, or from the External 2 input, Main Tuner or Figure 7-1 illustrates the NTSC Signal Selection cir- Sub Tuner. The selected main picture signals are di- cuitry. The circuitry is basically the same as in the V17 rected to 3DYC Comb Filter circuitry, and sub picture chassis. -
Page 45: Pcb-Signal Video Color Signal Path
PCB-SIGNAL Video/Color Path • 480i – YCbCr are directed to PCB-2HDW and CbCr to the DM Module. The 480i Y Main Picture Signal Path signal, directly from PCB-3DYC, is routed Figure 7-2 shows the Overall Video/Color Signal to the DM Module. Path on the PCB-SIGNAL. - Page 46 AMDP, Cb-AMDP and Cr-AMDP are directed to the Decoder. The output from the Sub Decoder is applied VCJ. to the Sub YCbCr Select circuit. Signals from the COMP-1, COMP-2 and DTV inputs are also directed When the main picture source is a HD Broadcast or to the Sub YCbCr Select circuit.
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Page 47: Ycbcr Select Circuitry
• The Y signal is applied to the NTSC SW, IC2A00 is a new IC (Generic #CXA2151Q). It se- IC2Y01. lects the main picture YCbCr signals from: • The output of IC2A60 The NTSC SW selects the S-Y signal, or the Y sig- •... -
Page 48: Vcj Video/Color Signal Path
Figure 5 illustrates the Sub Picture YCbCr Select ICs detects the format of the selected signals and in- Circuitry. Sub picture NTSC signal is converted to forms the TV Control µPC of that format, via the SDA- the YCbCr format in the Sub Decoder, IC2H00. The MN I C Data line. - Page 49 Note that the DM RGB signals are also input to the Another internal switch in the VCJ selects the signals at VCJ at pin 49-51. These inputs are used for OSD pins 67-69 or pins 73-75 and directs the signals to the insertion when the main picture source is analog.
- Page 50 CRT Drive & Protect Circuitry line momentarily goes Low during a channel or input Figure 7-7 illustrates the CRT Drive and CRT Protect change, momentarily blanking the CRTs. circuitry. The CRT Drive circuitry is the same as that in The VBLNK line goes High if deflection is lost. The the V17, except that the three discrete component tran- sistor amplifiers on each PCB-CRT are replaced with a High turn Q2W03 On, blanking all three CRTs to...
- Page 51 When the main signal source is HD or SD from the DM the Y output of the NTSC SW, IC2Y01. The two sig- Module. The circuitry in the DM Module outputs ana- nals are applied to A/V-SW, IC2L00, and forwarded log Y-DM and C-DM signals which are directed to to the Main Inputs on IC2K00.
- Page 52 DM Basic Signal Block of the Demodulator is the HD Transport Data Stream. It is directed through the System Interface circuitry Figure 7-9 shows a Basic Block Diagram of the Signal to an MPEG Decoder. The Decoder outputs main Processing circuitry in the DM Module. Only a simple picture analog RGB, and also Separate Y and C sig- Block Diagram is necessary since the DM Module is a nals for the Monitor Output circuitry.
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Page 53: Sync Block Diagram
Chapter 8 Deflection & HV Circuitry Although some nomenclature differs, the Deflection The Main Decoder outputs separated Horizontal and circuitry is mostly the same as in previous models. Vertical Sync. The Sync Separator outputs composite The main changes are: sync (CSYNC), combined horizontal and vertical. •... -
Page 54: Sync Signal Path
The 2HDW circuitry requires sync with no equaliz- tal cable signal, the signal is decoded in the DM Mod- ing pulses. Therefore when the source signal is 480i, ule and DM horizontal and vertical sync are directed the sync from the Main Decoder is selected and di- to the VCJ. -
Page 55: Deflection And High Voltage
Deflection and HV Circuitry Horizontal Drive is amplified by Q5A33 and Q5A32 Figure 8-2 illustrates the Deflection and High Volt- and applied to the base of Q5A31, the Horizontal age circuitry. Horizontal and Vertical Sync signals Output transistor. The output of Q5A31 takes three from the VCJ are routed from the PCB-SIGNAL, paths. -
Page 56: Hv 12 Volt Supply
HV 12 Volt Supply the emitter drops below 12 volts, and decreases if Figure 8-3 shows the HV 12V supply circuitry. The the voltage exceeds 12 volts. The HV 12V supply is source of the supply is the 24 Supply from the Main routed through a jumper in the DK connector to Power Supply, applied to the collector of Q5A08. -
Page 57: Hv Regulation
HV Regulation in excessive HV. HV FB DC can safely be measured after buffering by the Op-amp in IC5A01. The HV Regulation circuitry is shown in Figure 8-4. Controlling the duty cycle of the drive applied to the The sample of the HV is compared to the HV-ADJ HV Output transistor, Q5A51, regulates the HV. -
Page 58: Deflection Loss Detection
As beam current increases, the voltage at pin 8 of the Flyback decreases. When the voltage at pin 5 of IC5A02 drops be- low the reference at pin 6, the output at pin 7 goes Low, shut- ting the set Off. Other circuitry in IC5A00 pro- vides additional protection. -
Page 59: Flash Protect Circuit
• Q5A07 conducts • Q4A02 conducts pulling pin 25 of the Jungle • VBLNK goes High, activating CRT Protect IC Low. • HV is removed. Flash Protect Circuit This same action occurs when Power is switched from The Flash Protect circuit in Figure 8-7 is new. It On to Off. - Page 61 Chapter 9 Sound Circuitry Like most of the analog circuitry in the V19/V21, the analog stereo signals that are directed to the Sound Sound Circuitry is almost identical to previous models. Source Select circuitry. This is apparent from the above Simplified Block Dia- gram.
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Page 63: Output
Overall Sound Signal Path Figure 9-1 illustrates the Overall Sound Signal Path. The AV/SW ICs, IC2L00 and IC2K00, used to se- lect Main and Sub Picture Video/Color are used to the select the Sound sources. IC2L00 selects Main and Sub sound sources from External NTSC Inputs 1, 3, 4, and 5, and from Com- ponent Inputs 1 and 2. -
Page 65: Chapter 10
Chapter 10 Convergence Circuitry The Block Diagram above reveals the theory of op- The signals then pass through LPF circuitry, remov- eration of the Convergence Circuitry to be same as ing any remaining high frequency digital signals. Then in previous models. Horizontal and vertical pulses the signals are amplified in Summing Amplifiers. -
Page 66: Waveform Generator And D/A Converter
• C-SDA … I C Data Line • C-SCL …. I C Clock Line Waveform Generator & A/D • C-ACK … Command Acknowledgment line Converter. • C-BUSY … Busy Line • C-MUTE … Momentarily disables the Figure 10-1 illustrates the Convergence Waveform Convergence Circuitry during Channel Generator and the A/D Converter. -
Page 67: Lpf And Summing Amplifiers
IC8E03. IC8E03 houses all the required A/D Con- • IC804 … RH and GH LPF and Summing verters. Amplifier • IC803 … BH and RV LPF and Summing LPF & Summing Amplifiers Amplifier • IC802 … GV and BV LPF and Summing The LPF and Summing Amplifier circuitry is shown in Amplifier Figure 10-2. -
Page 68: Convergence Output Circuitry
Note that Green Horizontal is added to Red and Blue Convergence Output Circuitry Horizontal second stage inputs, and Green Vertical Figure 10-3 illustrates the Convergence Ouput circuitry. is added to the Red and Blue Vertical second stage In the V19, Convergence Output Circuitry is internal to inputs. -
Page 69: Using The Front Panel Led
Chapter 11 Troubleshooting Tips LED Indications Conditions Probable Cause After AC is applied Standy Power Supply or TV µPC not running Fast Blink for 70 sec. After AC is applied Normal - DM µPC is booting up Fast Blink (doesn't stop) After AC is applied TV µPC is running, but DM failed to boot up Slow Blink Set is Off... -
Page 70: Dm Module Check
Error Code Probable Cause Normal Operation - No Error Detected X-Ray Protect Short Protect Loss of Horizontal Deflection Loss of Vertical Deflection Table 11-2: Error Codes If DSP-H and DSP-V are missing, check the analog circuity. If they are present, the DM Module is prob- ably at fault. - Page 71 Copyright © 2002 Mitsubishi Digital Electronics America, Inc. 9351 Jeronimo Road • Irvine, CA 92618-1904...