JVC TK-C600 - Page 22

SECTION 3
CHARTS AND DIAGRAMS
a SCHEMATIC DIAGRAM NOTES
@ Schematic safety precaution
* Parts are safety related parts.
When replacing them, be sure to use the specified parts.
Voltage and waveform measurements.
Voltage: Measured with digital voltmeter in DC range;
iris closed.
Waveform: Color bars illuminated at more than 4000 lux
at 3200 K lighting.
@ Terminal logic
Top bar of terminal name show input or output logic.
Top bar shows, the control circuit become active at nega-
tive (low) logic input for example.
e Resistor © Capacitor © Coil
NO UNITS : [Q] NO UNITS: [pF] w/wH : [LH]
K : [kQ] P_: [pF] m_ : [mH]
M : [MQ]
= REPLACING SUBMINIATURE “CHIP” PARTS
e Some resistors, shorting jumpers (0 Q resistance), ceramic
Capacitors, transistors, and diodes are chip parts. These
chip parts cannot be reused after they are once removed.
© Soldering cautions:
1) Do not apply heat for more than 3 seconds.
2) Avoid using a rubbing stroke when soldering.
3) Discard removed chips; do not reuse them.
4) Supplementary cementing is not required.
5) Use care not to scratch or otherwise damage the chips.
© On Replacing Chip Parts
Use a soldering iron (rated temp.: 260-300°C, 17 W) which is
sharp in the tip and high in the insulation.
Notes:
e There are many mini flat |Cs used in the camera. When
unsolder them and cutting off IC pins to remove them,
do the work most carefully not to get the print pattern of
the board damaged nor come off.
e When soldering is tried twice or more for the same chip
parts, carefully wipe flux dusts off with cloth moistened
with absolute alcohol, otherwise the IC may malfunction
owing to remaining dusts.