JVC TH-A35 Service Manual

TH-A35
1-3
Preventing static electricity
Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged,
can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.
1.1. Grounding to prevent damage by static electricity
Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as DVD players.
Be careful to use proper grounding in the area where repairs are being performed.
1.1.1. Ground the workbench
1. Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it
before placing the traverse unit (optical pickup) on it.
1.1.2. Ground yourself
1. Use an anti-static wrist strap to release any static electricity built up in your body.
1.1.3. Handling the optical pickup
1. In order to maintain quality during transport and before installation, both sides of the laser diode on the
replacement optical pickup are shorted. After replacement, return the shorted parts to their original condition.
(Refer to the text.)
2. Do not use a tester to check the condition of the laser diode in the optical pickup. The testers internal power
source can easily destroy the laser diode.
1.2. Handling the traverse unit (optical pickup)
1. Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit.
2. Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific
details, refer to the replacement procedure in the text. Remove the anti-static pin when replacing the traverse
unit. Be careful not to take too long a time when attaching it to the connector.
3. Handle the flexible cable carefully as it may break when subjected to strong force.
4. It is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it.
Conductive material
(conductive sheet) or iron plate
(caption)
Anti-static wrist strap
1M

JVC TH-A35 Specifications

Amplifier Section

power per channel	45 watts
impedance	6 ohms
frequency	1 kHz

Subwoofer

woofer size	16 cm
sustained power capacity	100 W
impedance	10 Ω

Audio Section

weight	4.8 kg
frequency range	25 Hz to 200 Hz
dimensions	202 mm × 330 mm × 341 mm

Video Section

dimensions	92 mm × 97.5 mm × 92 mm
weight	650 g
frequency range	90 Hz to 20 kHz

Tuner Section

FM tuning range	87.50 MHz – 108.00 MHz
AM tuning range	522 kHz – 1 629 kHz
power supply	230 V, 50 Hz