Sony tcm 450 dv service manual

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2 TCM-450DV TABLE OF CONTENTS 1.GENERAL ................................................................... 2 2. DISASSEMBLY .......................................................... 3 2-1. Cabinet (Rear) ......................................................... 3 2-2. Main Board ............................................................. 4 2-3. Mechanism Deck (MT-450-175) ............................. 4 2-4. Belt (Counter), Belt (Cap)S, M901 (Capstan/Reel Motor), HRP901 (REC/PB Head), HE901 (ERASE HEAD) ............. 5 2-5. Cassette Lid Assy, Led Board ................................. 5 3. MECHANICAL ADJUSTMENTS ....................... 6 4. ELECTRICAL ADJUSTMENTS ......................... 6 5. DIAGRAMS 5-1. Block Diagrams ....................................................... 7 5-2. Printed Wiring Board –MAIN Section (Side A) – .. 8 Printed Wiring Board –MAIN Section (Side B) – .. 9 5-3. Schematic Diagram –MAIN Section (1/2) – ........... 10 5-4. Schematic Diagram –MAIN Section (2/2) – ........... 11 5-5. IC BLOCK DIAGRAMS ........................................ 12 6. EXPLODED VIEWS 6-1. Cassette Lid, Cabinet (Rear) Section ...................... 13 6-2. Cabinet (Front) Section ........................................... 14 6-3. Mechanism Deck Section-1 (MT-450-175) ............ 15 6-4. Mechanism Deck Section-2 (MT-450-175) ............ 16 7. ELECTRICAL PARTS LIST ................................ 17 Flexible Circuit Board Repairing -Keep the temperature of the soldering iron around 270 ˚C dur- ing 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. Notes on chip component replacement -Never reuse a disconnected chip component. -Notice that the minus side of a tantalum capacitor may be dam- aged by heat. SECTION 1 GENERAL This section is extracted from instruction manual. REC/BATT REC TIME/ PLAY MODE* VOR TAPE COUNTER x STOP m REW/REVIEW PAUSE .MIC (PLUG IN POWER)* EAR Microphone DC IN 3V z RECTape counter reset button * The button/jack has a tactile dot.