JVC KS-FX621 Service Manual page 18

KS-FX621
Information for using a car audio service jig
1. We're advancing efforts to make our extension cords common for all car audio products.
Please use this type of extension cord as follows.
2. As a U-shape type top cover is employed, this type of extension cord is needed to check operation of the
mechanism assembly after disassembly.
3. Extension cord : EXTKSRT002-18P ( 18 pin extension cord ) For connection between mechanism assembly
and main board.
4. Check for mechanism driving section such as motor ,etc.
D isassembly method
1. Remove the front panel assembly.
2. Remove the bottom cover.
3. Remove the front chassis.
4. Remove the rear panel.
5. Remove the heat sink.
6. Remove the main board.
7. Reattach the heat sink with two screw B. (Refer to Disassembly method.)
8. Install the front chassis and front panel assmbly.
9. Confirm that current is being carried by connecting an extension cord jig.
Note
Available to connect to the CJ701 connector when installing the front panel.
CAUTION :
Be sure to attach a heat sink on the power amplifier IC of a main board when supplying the power.
If voltage is applied without attaching the heat sink, the power amplifier IC will be destroyed by heat.
To
Cassette mechanism
EXTKSRT002-18P
1-18 (No.49825)
Extension cord
EXTKSRT002-18P
To
Main board
Front panel assembly
Cassette mechanism
Main board