JVC RC-QC7 Service Manual page 4

RC-QC7 serena
M Inportant management points regarding safety(Item demanding special safety precautions)
1. Power transformer marking : VIP57J2-12B
The torque of the screw driver for the power transformor must be controlled.
2. Concerning the AC socket, the next marking must be confirmed and to avoid print circuit board pattern damage.
The AC socket must not float from print circuit board.
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3. Concerning the primary terminal and the adjacent secondary terminal on the print circuit board to provide proper
creeping and spatial distance, solder must not protrude from soldering round.
[REFNO | Capacity and mark
T2.5A T2.5A
5. The speaker wire adjacent to live parts must be tied tightly near solder terminal.
6. Following parts are controlled as the heated parts.
Confirm that the flammable parts are lifted up ,the parts in (_ )
Indication on P.C.board
must be control.
* IC : (1C601), Transistor : (Q3361 ) *Resistor : R5311, R310, R311, * Diode: D1901, D1902, D1903, D1904
« Power Transformer
7. Confirm following EMC (Electromagnetic Compatibillty )contro! matter.
Control parts , and Control work ( Symbol number )
C1901, C1902, C1903, C1904 (QFV71HJ — 683ZN, QFV71HJ — 683Z)
8. Wires must be clamped or secured at the locations shown in the figure so that the wire do not touch to live parts,
moving part , hot part, or sharp edges.
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F1903 F1902
Fig.2-3
Antenna
terminal
Fig.2-5
4 (No.10036)