SONY SRF-DR2000 free download

File name SRF-DR2000.pdf

SRF-DR2000 SERVICE MANUAL Ver 1.0 1998.03 French Model SPECIFICATIONS 87.5 ­ 108MHz DARC type 64 x 132 FSTN LCD display Output 2 jack (stereo minijack) Power output 8 mW + 8 mW (at 10% harmonic distortion) Power requirements DC 3V, two R6 (size AA) /LR6 batteries Auto power off function Approx. 120 minutes Dimensions 116 x 70.5 x 28 mm (w/h/d) (Approx. 4 5/8 x 2 7/8 x 11/8 inches) not incl. projecting parts and controls Mass Approx. 150 g (5.3 oz) incl. batteries Supplied Accessories Stereo headphones (1) Design and specifications are subject to change without notice. Frequency range FM multiplex FM DATA RECEIVER MICROFILM TABLE OF CONTENTS Specifications ... 1 4. DIAGRAMS 4-1. Explanation of IC Terminals ... 9 4-2. Block Diagrams ... 13 4-3. Printed Wiring Boards (Main Section) ... 15 4-4. Schematic Diagram (Main Section) ... 17 4-5. Printed Wiring Boards (MICOM Section) ... 19 4-6. Schematic Diagram (MICOM Section) ... 21 1. GENERAL ... 2 2. DISASSEMBLY 2-1. Cabinet (Rear) Removal ... 6 2-2. Main Board Removal ... 6 2-3. MICOM Board, LCD1 Removal ... 7 5. EXPLODED VIEW ... 24 3. ELECTRICAL ADJUSTMENTS ... 8 6. ELECTRICAL PARTS LIST ... 25 SECTION 1 GENERAL This section is extracted from instruction manual. ­2­ ­3­ ­4­ ­5­ SECTION 2 DISASSEMBLY r The equipment can be removed using the following procedure. Cabinet (Rear) Main board MICOM board, LCD1 Set Note : Follow the disassembly procedure in the numerical order given. 2-1. CABINET (REAR) REMOVAL 2 Screws (1.7x10) 6 7 Cabinet (Rear) 5 4 1 Claws 8 3 Lid, battery case Claws Cabinet (Front) 2-2. MAIN BOARD REMOVAL Main board 4 Claws Claw 1 3 5 Removal solder 2 ­6­ 2-3. MICOM BOARD, LCD1 REMOVAL 1 Screws (1.7x5) MICOM board 4 Claw Claws 3 2 Cabinet (Front) Holder (LCD) 6 9 5 0 !Ў 7 MICOM board 8 LCD1 ­7­ SECTION 3 ELECTRICAL ADJUSTMENTS FM Section Setting : VOLUME FM RF signal generator 0.01µF TP FM IN (BPF401 1 pin) 22.5kHz frequency deviation by 400Hz signal. Output level : as low as possible level meter 16 set CT402 : FM Tracking Adjustment Adjustments Location : : Maximum [MAIN BOARD] (Side A) T401 : FM IF Alignment phones jack · Repeat the procedures in each adjustment several times, and the tracking adjustments should be finally the trimmer capacitors. FM IF ALIGNMENT Adjust for a maximum reading on level meter. T401 10.7MHz FM TRACKING ADJUSTMENT Adjust for a maximum reading on level meter. CT402 98.0MHz RV401 : VCO Adjustment FM VCO