Toa IR-200M Service Manual Download

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IR-200M, IR-300M Y

ADJUSTMENT PROCEDURE

• Adjustment points and input/output

· IR-200M

RF level control

· MAIN PCB (Component side)

· SUB PCB (Solder side)

· SUB PCB (Component side)

Vt terminal

Channel selector switch

AF input connector

TP2 : Check point for brightness
modulation

level

TP1 : Check point for brightness
modulation

level

Negative terminal of power supply

Check point for
RF measurement

Power selector switch

AF level control

Charge terminal connector

Positive terminal of power supply

Power switch

OFF

· IR-300M

· SW PCB (Component side)

· SW PCB (Solder side)

· IR PCB (Solder side)

· BATT PCB (Component side)

· BATT PCB (Solder side)

Power switch

External microphone
input terminal

AF input connector

AF level control

Negative terminal of power supply

Positive terminal of power supply

Vt terminal

Charge terminal connector

Channel selector switch

Power selector

switch

Microphone level control

TP2 : Check point for brightness
modulation

level

TP1 : Check point for brightness
modulation

level

Test point for RF measurement

RF level control

OFF

Summary of Contents for IR-200M

Page 1: ...put output 7 Adjustment and Check Method 8 OPERATION FLOW At power on 9 From turning off the power switch to when the operation stops 9 TROUBLESHOOTING IR 200M 10 IR 300M 10 BLOCK DIAGRAMS AND OPERATION DESCRIPTION IR 200M 11 IR 300M 12 SCHEMATIC DIAGRAMS IR 200M MAIN PCB 13 SUB PCB 14 IR 300M BATT PCB 15 IR PCB 16 SW PCB 17 MOUNTING DIAGRAMS AND PARTS LISTS IR 200M MAIN PCB 18 SUB PCB 18 Charge c...

Page 2: ...y responsible for such accidents Since lead can become an environmental contaminant this unit has been manufactured using solders that contain no lead in the printed circuit board While conventional solders are alloys of zinc and lead lead free solder is comprisend of an alterna tive alloy that contains no lead NOTES Circuit boards using lead free solder bear a lead free solder designation To main...

Page 3: ...batteries Infrared Emitter Note The design and specifications are subject to change without notice for improvement Accessories Screwdriver for setting 1 Color label 6 colors 1 Optional products Battery Charger IR 200BC Rechargeable battery IR 200BT 2 containing 2 pieces Battery IR 200BT rechargeable battery for the infrared wireless microphone 2 pieces or AA alkaline dry cell battery 2 pieces Curr...

Page 4: ...g on this switch causes its indicator to come on allowing it to also function as a battery indicator This switch continuously lights green while the battery is fully charged and gradually changes to red as the battery becomes weaker 2 External microphone input terminal MIC Used to connect a headset microphone or other external microphone 3 Infrared emitter Transmits the infrared beam for communica...

Page 5: ...5 Remove 1 screw securing the SUB PCB disconnect 2 harnesses then remove the SUB PCB and Charge PCB assembly Note Be careful not to over tighten the removed SUB PCB fixing screw when reassembling Note When reassembling first insert the pins of the CN202 and CN203 on the MAIN PCB into the pinholes of the CN101 and CN102 on the SUB PCB then attach the contact lug BATT into the front case s slot Be s...

Page 6: ...ame frame Windscreen frame Upper filter Upper filter Upper filter Windscreen frame Windscreen frame Windscreen frame 1 2 Upper filter Upper filter Upper filter Windscreen frame Windscreen frame Windscreen frame Measuring instruments to be used Modulation analyzer Band width 1 5 30 MHz or more Deviation meter Frequency counter Zi 50 Ω Audio analyzer Band width 20 Hz 20 kHz or more Audio frequency g...

Page 7: ...control Charge terminal connector Positive terminal of power supply Power switch L H ON OFF IR 300M SW PCB Component side SW PCB Solder side IR PCB Solder side BATT PCB Component side BATT PCB Solder side Power switch External microphone input terminal AF input connector AF level control Negative terminal of power supply Positive terminal of power supply Vt terminal Charge terminal connector Chann...

Page 8: ...mV Carrier signal level 150 mVp p 10 mV Current consumption 340 20 mV IR 300M Conditions Room temperature 15 35 ºC 59 95 ºF Power source 2 4 0 1 V DC Power switch SW300 ON Microphone level control VR301 H Maximum position Power selector switch SW201 N Normal position Channel selector switch SW200 B position Channel B Oscillation frequencies of Channels A and B are as follows Channel A 3 100 MHz 20...

Page 9: ...ot light even if the power switch is turned on Operating on rechargeable batteries Battery polarities not correct Specified battery not used Battery not charged Reinsert batteries correctly Replace the batteries with the IR 200BT rechargeable batteries for the infrared wireless microphone Charge using IR 200BC Battery Charger Reinsert batteries correctly Replace with new ones When the power switch...

Page 10: ...nals are received by the infrared tuner No Tone oscillation circuit X300 M303 M304 or AF mute circuit M3 may be failed IR 300M DC DC converter s output voltage is 5 0 V C113 terminal Reset terminal of the CPU is maintained at H TP105 and Pin No 8 of the M100 Yes Yes Yes Clock 6 MHz is oscillating Pin No 3 of the M100 No DC DC converter M102 or power switch SW300 may be failed No Reset circuit M101...

Page 11: ...r frequencies Logarithmic compresses audio signals to 2 1 Supplies power to microphone element Oscillation circuit uses C MOS inverter Performs system control frequency data transmission to PLL and battery voltage monitor Serves as an impedance converter as well as a buffer Oscillates transmitting frequency in conjunction with PLL Amplifies RF signals from VCO Frequency divides and phase compares ...

Page 12: ...ls from microphone element Logarithmic compresses audio signals to 2 1 Oscillation circuit uses C MOS inverter Amplifies high frequency components of audio signals at time constant of 300 μs Serves as a buffer and cuts 15 kHz or higher frequencies Oscillates transmitting frequency in conjunction with PLL Frequency divides and phase compares each output from reference oscillator 6 MHz and VCO gener...

Page 13: ...3 of SUB PCB To CN200 of SUB PCB AF mute PLL Ripple filter VCO Buffer amplifier RF level control Power selector switch OFF detection Power switch Channel selector switch Voltage detector Clock Battery checker CPU control dummy 1608Jumper IR 200M MAIN PCB SCHEMATIC DIAGRAMS SCHEMATIC DIAGRAMS ...

Page 14: ...mbly To Microphone element assembly Microphone amplifier Pre emphasis AF level control Low pass filter Compressor Tone oscillator Electret condenser microphone To CN102 of MAIN PCB To CN101 of MAIN PCB Drive current control LED driver Infrared emitting LED LED driver RF amplifier IR bias control Drive current control 300μs SUB PCB ...

Page 15: ... 9 11 12 13 10 I IR 300M Y 15 15 SCHEMATIC DIAGRAMS To CN200 of IR PCB Ripple Filter VCO Buffer amplifier RF level control OFF detection CPU control Voltage detector PLL dummy 1608Jumper Clock To Charge PCB assembly IR 300M BATT PCB ...

Page 16: ...6 16 SCHEMATIC DIAGRAMS Power selector switch Channel selector switch RF amplifier LED driver LED driver Infrared emitting LED Drive current control Drive current control IR bias control AF mute To CN100 of BATT PCB To CN303 of SW PCB To CN302 of SW PCB IR PCB ...

Page 17: ...IR 300M Y 17 17 SCHEMATIC DIAGRAMS To MIC ASSY Electret condenser microphone Pre emphasis 6dB ATT Microphone amplifier AF level control Low pass filter Compressor To microphone To CN202 of IR PCB To CN201 of IR PCB Power switch Tone oscillator SW PCB ...

Page 18: ...5 113 40 652 0X CAPACITOR U0603C102JNT C36 113 40 664 5X CAPACITOR 1608 50V 10NF TAP C37 113 40 621 0X U0603C030CNT C38 113 40 664 5X CAPACITOR 1608 50V 10NF TAP C39 113 40 664 5X CAPACITOR 1608 50V 10NF TAP C41 113 40 632 0X U0603C220JNT C100 113 40 630 6X CAPACITOR U0603C150JNT C101 113 40 626 5X U0603C080DNT C102 113 40 652 0X CAPACITOR U0603C102JNT C103 113 40 747 5X CAPACITOR C 25V 0 1MF B T ...

Page 19: ...112 80 421 7X RESISTOR 330K OHM 5 3 100 R31 112 80 353 7X RESISTOR 470 OHM 5 3 100 R32 112 80 365 6X RESISTOR 1 5K OHM 5 3 100 R33 112 80 337 7X RESISTOR 100 OHM 5 3 100 R34 112 80 365 6X RESISTOR 1 5K OHM 5 3 100 R35 112 80 369 2X RESISTOR 2 2K OHM 5 3 100 R36 112 80 365 6X RESISTOR 1 5K OHM 5 3 100 R37 112 80 300 3X WIRE JUMPER R38 112 80 300 3X WIRE JUMPER R39 112 80 300 3X WIRE JUMPER R40 112 ...

Page 20: ...2 113 40 644 1X CAPACITOR U0603C221JNT C33 113 40 644 1X CAPACITOR U0603C221JNT C34 113 40 664 5X CAPACITOR 1608 50V 10NF TAP C35 113 40 652 0X CAPACITOR U0603C102JNT C36 113 40 664 5X CAPACITOR 1608 50V 10NF TAP C37 113 40 621 0X U0603C030CNT C38 113 40 664 5X CAPACITOR 1608 50V 10NF TAP C39 113 40 664 5X CAPACITOR 1608 50V 10NF TAP C41 113 40 632 0X U0603C220JNT Designator Part Code Description ...

Page 21: ...X RESISTOR 100 OHM 5 3 100 R103 112 80 357 7X RESISTOR 680 OHM 5 3 100 R105 112 80 385 8X RESISTOR 10K OHM 5 3 100 R106 112 80 385 8X RESISTOR 10K OHM 5 3 100 R107 112 80 385 8X RESISTOR 10K OHM 5 3 100 R108 112 80 385 8X RESISTOR 10K OHM 5 3 100 R109 112 80 385 8X RESISTOR 10K OHM 5 3 100 R110 112 80 385 8X RESISTOR 10K OHM 5 3 100 R111 112 80 377 5X RESISTOR 4 7K OHM 5 3 100 R112 112 80 385 8X R...

Page 22: ...FE 3BK Ref No Part Code Description 1 Z3195 WIND SCREEN ASSY IR200M 2 108 03 113 70 FILTER IR200M UPPER 3 105 02 772 00 HOLDER IR300M SHOCK MOUNT 4 Z3194 MIC ASSY IR200M 5 108 03 114 40 FILTER IR200M LOWER 6 108 03 115 30 JOINT IR200M NECK 7 101 02 741 20 CASE IR200M FRONT 8 121 09 114 10 LED IR200M 9 121 01 936 70 KNOB IR200M SW 10 102 32 296 30 FIXING BRACKET IR200M KNOB 11 700 04 267 80 PCB ASS...

Page 23: ...60 SCREWDRIVER WM2200 SCREWS Ref No Part Code Description A 606 01 114 70 PAN HEAD SCREW M2 5 BS NI B D06 31 348 00 PAN HEAD SCREW BT M2 10 FE 3BK Ref No Part Code Description 1 101 02 745 60 CASE IR300M FRONT 2 121 09 108 60 FILTER IR300M 3 105 03 416 00 FILTER IR300M MIC 4 105 02 772 00 HOLDER IR300M SHOCK MOUNT 5 Z3194 MIC ASSY IR200M 6 700 04 219 50 PCB ASSY IR200M CHARGER 7 70004 268 30 PCB A...

Page 24: ...n this case fold back the strap 1 cm at the bar section Strap replacement procedure IR 300M NP AW8 NP AW8 NP AW8 NP AW8 NP AW8 NP AW8 Longer strap side Longer strap side Longer strap side Shorter strap side Shorter strap side Shorter strap side NP AW8 NP AW8 NP AW8 NP AW8 NP AW8 NP AW8 Bar section Bar section Bar section NP AW8 NP AW8 NP AW8 Bar section Bar section Bar section 5 Clip and clamp the...

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