Table of Contents
Advertisement
SECTION 3.
1. REMOVING THE CHASSIS
1) Remove the ANT connector nut and 2 knobs.
2) Remove 2 screws from the bottom of the CHASSIS.
3) Lift the bottom of the CHASSIS up in the direction
of the arrow.
BE CAREFUL to not pull out the speaker wire when
separating the CHASSIS and the FRONT PANEL.
SCREWS×2
CHASSIS
FRONT PANEL
For easy separation of the CHASSIS
Use a suction lifter to lift the bottom of the CHASSIS up.
Suction lifter
• Part name
: EA950R-2
• Manufacture : ESCO CO.LTD
Suction lifter
DISASSEMBLY INSTRUCTION
FRONT PANEL
(Continued to the right above)
4) CAREFULLY lift the chassis out of the FRONT PANEL
and turn it over in order to unplug the speaker wire.
SPEAKER
WIRE
5) Remove the seals and nuts from the CHASSIS.
TOP SEAL
NUTS×2
2. REMOVING THE MAIN UNIT
1) Remove the 9 screws and the side plate from the
MAIN UNIT.
2) Unsolder the 2 points shown, and then remove the
MAIN UNIT.
UNSOLDER
Solder
remover
SIDE PLATE
MAIN UNIT
3 - 1
CHASSIS
FRONT PANEL
CHASSIS
SIDE SEAL
MAIN UNIT
SCREWS×9
CHASSIS
Hide quick links:
Advertisement
Table of Contents
Need help?
Do you have a question about the IC-F4001 and is the answer not in the manual?
Questions and answers
ptt pressed but not tx
The Icom IC-F4001 may not be transmitting when the PTT is pressed due to several possible reasons:
1. Transmit Inhibit Function – Transmission is restricted if:
- The channel is muted (PMR operation only).
- The channel is busy.
- A signal with an unmatched (or matched) CTCSS or DTCS tone is received.
- The selected channel is a "receive only" channel.
2. Time-Out Timer – If the transceiver has been transmitting continuously beyond the pre-programmed time limit, the time-out timer activates and stops further transmission.
3. Penalty Timer – After the time-out timer activates, the penalty timer may further inhibit transmission for a set period.
4. Power Supply Issues – If the transceiver is connected to a power supply with incorrect voltage or reversed polarity, it may not function properly.
5. Antenna Damage – If an RF signal stronger than 20 dBm (100 mW) was applied to the antenna connector, the transceiver’s front-end could be damaged, affecting transmission.
Checking these factors can help identify and resolve the issue.
This answer is automatically generated
Q73 trasistor does not work when PTT pressed but software is ok