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SERVICE MANUAL

TMR-RF940R

SUPPLEMENT-1

File this supplement with the service manual.

AEP Model

Subject:

1. Modification
2. Electrical Adjustments

Ver. 1.0 1998. 05

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Содержание TMR-RF940R

Страница 1: ...TRANSMITTER MICROFILM AEP Model SPECIFICATIONS SERVICE MANUAL TMR RF940R TMR RF940R is transmitter unit in MDR RF940RK ...

Страница 2: ... by heat Flexible Circuit Board Repairing Keep the temperature of the soldering iron around 270 C during repairing Do not touch the soldering iron on the same conductor of the circuit board within 3 times Be careful not to apply force on the conductor when soldering or unsoldering This section is extracted from instruction manual SECTION 1 GENERAL ...

Страница 3: ...3 4 SECTION 2 DISASSEMBLY Note Follow the disassembly procedure in the numerical order given CABINET UPPER ASS Y 4 two claws 2 two claws 4 two claws 3 cabinet upper ass y 5 TX board 1 two screws P2 6 10 ...

Страница 4: ......

Страница 5: ......

Страница 6: ...50V C41 1 128 393 11 ELECT CHIP 100uF 20 10V C42 1 164 222 11 CERAMIC CHIP 0 22uF 25V C43 1 126 246 11 ELECT CHIP 220uF 20 4V C44 1 126 205 11 ELECT CHIP 47uF 20 6 3V C45 1 126 205 11 ELECT CHIP 47uF 20 6 3V C51 1 164 489 11 CERAMIC CHIP 0 22uF 10 16V C52 1 164 695 11 CERAMIC CHIP 0 0022uF 5 50V C53 1 163 141 00 CERAMIC CHIP 0 001uF 5 50V C54 1 163 251 11 CERAMIC CHIP 100PF 5 50V C55 1 163 116 00 ...

Страница 7: ... 3 3K 5 1 10W R06 1 216 033 00 METAL CHIP 220 5 1 10W R07 1 216 061 00 METAL CHIP 3 3K 5 1 10W R08 1 216 061 00 METAL CHIP 3 3K 5 1 10W R11 1 216 085 00 METAL CHIP 33K 5 1 10W R12 1 216 049 00 METAL CHIP 1K 5 1 10W R13 1 216 061 00 METAL CHIP 3 3K 5 1 10W R14 1 216 097 00 METAL CHIP 100K 5 1 10W R15 1 216 061 00 METAL CHIP 3 3K 5 1 10W R16 1 216 033 00 METAL CHIP 220 5 1 10W R17 1 216 061 00 METAL...

Страница 8: ... METAL CHIP 1M 5 1 10W R87 1 216 121 00 METAL CHIP 1M 5 1 10W R88 1 216 049 00 METAL CHIP 1K 5 1 10W R89 1 216 097 00 METAL CHIP 100K 5 1 10W R90 1 216 073 00 METAL CHIP 10K 5 1 10W R91 1 216 200 11 METAL CHIP 1 2K 5 1 8W R92 1 216 073 00 METAL CHIP 10K 5 1 10W R93 1 216 073 00 METAL CHIP 10K 5 1 10W VARIABLE RESISTOR RV21 1 238 856 11 RES ADJ CERMET 10K RV51 1 238 857 11 RES ADJ CERMET 22K RV52 1...

Страница 9: ...SERVICE MANUAL TMR RF940R SUPPLEMENT 1 File this supplement with the service manual AEP Model Subject 1 Modification 2 Electrical Adjustments Ver 1 0 1998 05 ...

Страница 10: ...uctor Side You can use any of the following capacitors Part No 22 µF 4 V 1 124 430 1 126 263 22 µF 6 3 V 1 115 863 1 123 618 1 124 222 1 126 153 1 126 419 1 126 555 1 126 269 22 µF 10 V 1 124 638 1 123 644 1 124 228 1 126 273 1 126 427 1 126 783 1 128 054 47 µF 4 V 1 107 294 1 126 265 1 126 553 1 126 779 47 µF 6 3 V 1 123 293 1 123 647 1 124 224 1 126 154 1 126 271 1 126 421 1 126 513 1 126 557 47...

Страница 11: ...els and necessary equipments as shown in the figure1 2 Observe the waveform of the oscilloscope In case that a beat can be seen in the waveform select a channel CH1 or CH2 with less beat 3 Use the CCIR ARM Filter for the noise meter and measure the white noise level If the value is below 63 dBV 0 7 mVrms the level is acceptable Figure 1 Adjustment of Transmitter Set the transmitter and a spectrum ...

Страница 12: ...nt Turning RV51 CH2 Deviation adjustment Turning RV52 Figure 3 L R Deviation adjustment Figure 4 1 Set the equipments as the same as the figure 2 2 Input a signal of 1 kHz 316 mVrms to Lch of the transmitter Confirm Main carrier frequency a b C Confirm Sub carrier frequency Confirm Sub carrier modulation degrees SPAN 200 kHz 10 dB DIV RBW 1 kHz VBW 1 kHz SWP 2 0 sec Adjust CENTER Frequency to the ...

Страница 13: ... analyzer is introduced Deviation adjustment confirmation 1 Input a 400 Hz 316 mV signal into the left channel of transmitter 2 Measure the AC voltage at the Pin 1 of IC21 MJM2100M with AC voltmeter Spec 100 10 mVrms If not turn RV21 for obtaining the value Adjustment Location TX board See page 6 Sub carrier frequency and output level confirmation 1 No signal is input into transmitter 2 Connect a ...

Страница 14: ...940R channel 1 or RV52 channel 2 for obtaining the value SCHEMATIC DIAGRAM MDR RF940R Service Manual page 8 Location B D 9 11 Connection point RX Board PRINTED WIRING BOARD MDR RF940R Service Manual page 5 Location F H 4 6 RX Board Side A Adjustment Location TX Board Conductor Side AC voltmeter RV51 CH1 RV52 CH2 RV21 Deviation Adjustment Carrier Frequency Modulation Adjustment IC01 IC21 1 Sony Cor...

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