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akira CT-21LS9MTS Service Manual

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Summary of Contents for akira CT-21LS9MTS

  • Page 2 Model: CT-21LS9MTS Chassis: 3Y03 Model No: CT-21LS9MTS Version 1.0...

  • Page 3: Table Of Contents

    CONTENT SERVICE ADJUSTMENT ........................4 COMPLETE MACHINE GENERAL ADJUSTMENT................6 FACTORY MENU DISCRIPTION......................8 CONTROL LOCATION........................11 INPUT & OUTPUT TERMINALS......................12 MECHANICA DISASSEMBLING ....................... 13 CABINET PARTS LIST........................15 CIRCUIT DIAGRAM ..........................16 Model No: CT-21LS9MTS Version 1.0...

  • Page 4: Service Adjustment

    2. Connect digital voltmeter across C227. DC regulated power supply positive terminal output +14V to C617. 3. Adjust L203 coil to obtain 3.6V Digital voltage meter reading. Note: To cancel this adjustment, L203 can be adjusted before inserted to the chassis with a special equipment. Model No: CT-21LS9MTS Version 1.0...
  • Page 5 Press TIMER key to go to the next factory menu. Go to MENU5 status by this means. Press MENU key to exit factory mode. 3. Select RF.AGC by pressing CH+ and CH- keys. Adjust VOL+ and VOL- keys to obtain 4V digital voltage meter reading. Model No: CT-21LS9MTS Version 1.0...

  • Page 6: Complete Machine General Adjustment

    Horizontal Center adjustment and horizontal position of OSD adjustment 1. Receive monoscope PATTERN. Set TV standard status. Adjust H.PHASE in menu 1. to obtain horizontal center at the center of CRT screen. 2. Adjust OSD.HPOS to get right display position. Model No: CT-21LS9MTS Version 1.0...
  • Page 7 4. Remove the DY wedges and slightly tilt the deflection yoke horizontally and vertically to obtain the good overall convergence. Fix them after the good overall convergence got. 5. If purity error is found, follow PURITY ADJUSTMENT instructions. Purity Magnet RB-G Magnet Clamper Static Magnet Model No: CT-21LS9MTS Version 1.0...

  • Page 8: Factory Menu Discription

    Select AV numbers (0/ No AV; 1/1 AV; 2,3/2AV) SRH.SPEED Select auto search speed (0/ fastest, 7/ lowest) TDA9852 Disable 9852 (0/disable; 1/able) TUN.AS.V Select the Tuner address (0/ Tuner pin3 to ground; 1/pin3 not used) Model No: CT-21LS9MTS Version 1.0...
  • Page 9 Stereo alignment data for spectral expander Stereo level switch VALUE DISCRIPTION Stereo adjust on/off AT1-AT2 Attack time at AVL TC2-TC0 Timing current alignment data WR.ERR RD ERR MANU ADJ STEREO Mode selection for line out Mode selection for line out Model No: CT-21LS9MTS Version 1.0...
  • Page 10 White Balance address Data Name E2PROM Address LA76814 ADDRESS #1011 1010B bright #0001 0100B contrast #0001 0101B color #1011 1010B Sub-bright #0001 0011B #0000 1101B #0000 1110B #0000 1111B #0001 0000B #0001 0000B #0001 0010B Model No: CT-21LS9MTS Version 1.0...

  • Page 11: Control Location

    5. Program down & up button 6. Volume down & up button 7. Menu button 8. AV /TV button 9. Front AV In (Option) 10. Audio /Video –In/out Jack 11. AC Power cord 12. Terminal antenna (75 Ohm) (STEREO) (MONO) Model No: CT-21LS9MTS Version 1.0...

  • Page 12: Input & Output Terminals

    This is a mono CTV even though there are R & L audio input & output jack. These audio R/L input terminals are parallel connected inside and make mixed monaural sound output. There are some monaural audio output come from R/L output terminals. Model No: CT-21LS9MTS Version 1.0...

  • Page 13: Mechanica Disassembling

    (picture tube grounding lead). 3. Disconnect degaussing coil socket (KE), picture tube socket, deflection yoke connector (KDY), speaker connectors (KL) and (KR) and 2 anode lead. 4. Remove chassis completely by sliding it straight back. Model No: CT-21LS9MTS Version 1.0...
  • Page 14 Note: If the picture tube is being replaced, mount the degaussing coil on the picture tube. See following. DEGAUSSING COIL DEGAUSSING COIL HOLDER PICTURE TUBE GROUNDING LEAD To CRT Unit DEGAUSSING ground COIL SOCKET Model No: CT-21LS9MTS Version 1.0...

  • Page 15: Cabinet Parts List

    Control key knob- electro plating silver (ABS) SK060121NZM001 Back label ENG SK100221NX0001 Back cabinet – dark grey #DG001 SK1015HS080002 Bottom cabinet- normal grey #NG001 (ABS) SK1016HS080003 Battery door – normal grey #NG001 (ABS) SK1014HS080012 Top cabinet – normal grey #NG001 (ABS) Model No: CT-21LS9MTS Version 1.0...

  • Page 16: Circuit Diagram

    Q302 R307 R643 0.1U/63V Q610 ZD601 2SD2499 R322 D305 2SC1815 R646 Q602 VR601 BA158 0.68 2W C302 C613 2SC1815 C303 C310 0.0022U/250V 2KB(H) 0.056U/250V 10U/250V 680P/500V CN601 CN602 R644 C309 100K/2W L601 0.0022U/1KV DEG.COIL AC110V Model No: CT-21LS9MTS Version 1.0...