SONY TMRRF915R
Manual de Servicio

TMR-RF915R/RF945R

SECTION 1 GENERAL
This section is extracted from instruction manual.

TABLE OF CONTENTS
Specifications ............................................................................ 1

1. GENERAL ...................................................................... 2 2. DISASSEMBLY
2-1. Cabinet (Upper) ........................................................ 3 2-2. TX-BASE Board ....................................................... 3

Setting up the transmitter 1 Connect the transmitter to audio/video
equipment. Select one of the hookups below depending on the jack type: A To connect to a headphones jack

3. ELECTRICAL ADJUSTMENTS ............................. 4 4. DIAGRAMS
4-1. Block Diagrams ......................................................... 5 4-2. Schematic Diagram ................................................... 6 4-3. Printed Wiring Board ................................................ 7

Transmitter

5. EXPLODED VIEWS..................................................... 8 6. ELECTRICAL PARTS LIST...................................... 9
OFF ON NOISE FILTER

to AUDIO IN A jacks

B

R AUDIO IN

A

L

DC IN 9V

123
CHANNEL

Right channel (red)

Left channel (white)

Connecting cord (supplied)

Unimatch plug adaptor (supplied) to headphones jack (stereo phone jack)

to headphones jack (stereo mini jack) Discman, MD, WALKMAN*, VCR, etc.

SAFETY CHECK-OUT
After correcting the original service problem, perform the following safety checks before releasing the set to the customer.

1.

2. 3.

4.

Check the area of your repair for unsoldered or poorly-sol deredconnections. Check the entire board surface for solder splashes and bridges. Check the interboard wiring to ensure that no wires are �pinched� or contact high-wattage resistors. Look for unauthorized replacement parts, particularlyt ransis tors, that were installed during a previous repair. Point them out to the customer and recommend their replacement. Look for parts which, through functioning, show obvious signs of deterioration. Point them out to the customer and recommend their replacement.

5. 6.

Check the B+ voltage to see it is at the values specified. 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

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