Samsung C480FW not seen from WiFi network and won't power-down. Have to turn off at the power point.

[MyronSz]

The problem with Samsung C480FW is that all the control panel controls work, menu works but the printer becomes inaccessible from the network through Wifi.  I have to cycle the power at the mains outlet.

From the printer's logs it looks like something just stopped as logging stopped until the power was cycled (power-off hard reset).  I have also spotted some other errors logged while the printer is idle.  All related log entries are shown below.

Below is shown the logging stop at 5:23 in the morning.

$[03-26,05:23:53/UP/2]e_[UP<](0,15483) 9/0 [908352]
$[03-26,05:23:53/UP/2]e_[UP>](0,15483)  [907264](-2)
$[03-26,05:23:54/NIC/1][WLANLL]I[2003] $[03-26,05:23:54/NIC/1]ulWLANStatus : 00000002
$[03-26,05:23:55/NIC/1]Wireless Link Status is updated for MicroNet.(3 --> 2)
$[03-26,05:23:56/NIC/2][WLAN_BCM_EVENT] $[03-26,05:23:56/NIC/2]MACEVENT: RSSI -55
$[03-26,05:23:56/NIC/2][WLAN_BCM_EVENT] $[03-26,05:23:56/NIC/2]MACEVENT: RSSI -54
$[03-26,05:23:58/UP/2]e_[UP<](2,15484) 13/1/2 [905600]
$[03-26,05:23:58/UP/2]e_[UP>](2,15484)  [904960](0)
$[03-26,05:23:58/UP/2][EvMem]ECS:84b7d:1059:886528
$[03-26,05:23:58/UP/2][EvMem]EFS:84b4b:1059:886528
$[03-26,05:23:58/UP/2][EvMem]ECS:84b7e:782:886528
$[03-26,05:23:58/UP/2][EvMem]EFS:84b4c:782:886528
$[03-26,05:23:58/UP/2]e_[UP<](0,15485) 9/0 [908352]
$[03-26,05:23:58/UP/2]e_[UP>](0,15485)  [907264](-2)
$[03-28,11:38:32/PLF/2]  
$[03-28,11:38:32/PLF/1]=========== PowerOn Reset ================
$[03-28,11:38:32/PLF/2]   Main Version : V3.00.01.21     SEPT-03-2019 
$[03-28,11:38:32/PLF/2]  
$[03-28,11:38:32/NIC/2][WLAN_BCM_EVENT] $[03-28,11:38:32/NIC/2]MACEVENT: RSSI -55
$[03-28,11:38:33/UP/2][EvMem]ECS:30:999:949440
$[03-28,11:38:33/NIC/2]DHCP is IDLE during 43198.00 seconds
$[03-28,11:38:33/UP/2]e_[UP<](0,145) 9/0 [950528]
$[03-28,11:38:33/UP/2]e_[UP>](0,145)  [949440](-2)
$[03-28,11:38:33/NIC/2][WLAN_BCM_EVENT] $[03-28,11:38:33/NIC/2]MACEVENT: RSSI -54
$[03-28,11:38:33/NIC/2]SPMD: Connection Recved....
$[03-28,11:38:33/NIC/2]SPMD: server(::FFFF:192.168.0.26) sent print request.
$[03-28,11:38:33/NIC/2]SPMD: Data Receive from Port 9100...
$[03-28,11:38:33/CON/1]  <<<CJI_StartDataClassifier>>> [0x1b][0x25]
$[03-28,11:38:35/NIC/2][WLAN_BCM_EVENT] $[03-28,11:38:35/NIC/2]MACEVENT: RSSI -55
$[03-28,11:38:36/UP/2]e_[UP<](2,146) 13/1/2 [947776]
$[03-28,11:38:36/UP/2]e_[UP>](2,146)  [947136](0)
$[03-28,11:38:36/UP/2][EvMem]ECS:31:1059:928704

Here are the log entries that indicate some sort of firmware problem.

$[03-25,22:37:15/CON/1]ConAdmin_NIC_MemAlloc fail reqSize : 61440    totalMem : 645719    CON_NIC_MEM_SEGMENT_SIZE : 3145728
$[03-25,22:37:15/CON/1]ConAdmin_NIC_MemAlloc fail reqSize : 61440    totalMem : 645719    CON_NIC_MEM_SEGMENT_SIZE : 3145728
$[03-25,22:37:15/CON/1]ConAdmin_NIC_MemAlloc fail reqSize : 61440    totalMem : 645719    CON_NIC_MEM_SEGMENT_SIZE : 3145728
$[03-25,22:37:15/CON/1]ConAdmin_NIC_MemAlloc fail reqSize : 61440    totalMem : 645719    CON_NIC_MEM_SEGMENT_SIZE : 3145728
$[03-25,22:37:15/CON/1]ConAdmin_NIC_MemAlloc fail reqSize : 61440    totalMem : 645719    CON_NIC_MEM_SEGMENT_SIZE : 3145728
$[03-25,22:37:15/CON/1]ConAdmin_NIC_MemAlloc fail reqSize : 61440    totalMem : 645719    CON_NIC_MEM_SEGMENT_SIZE : 3145728
$[03-25,22:37:15/CON/1]ConAdmin_NIC_MemAlloc fail reqSize : 61440    totalMem : 645719    CON_NIC_MEM_SEGMENT_SIZE : 3145728
$[03-25,22:37:15/CON/1]ConAdmin_NIC_MemAlloc fail reqSize : 61440    totalMem : 645719    CON_NIC_MEM_SEGMENT_SIZE : 3145728
$[03-25,22:37:15/CON/1]ConAdmin_NIC_MemAlloc fail reqSize : 61440    totalMem : 645719    CON_NIC_MEM_SEGMENT_SIZE : 3145728
$[03-25,22:37:15/CON/1]ConAdmin_NIC_MemAlloc fail reqSize : 61440    totalMem : 645719    CON_NIC_MEM_SEGMENT_SIZE : 3145728
$[03-25,22:37:15/CON/1]ConAdmin_NIC_MemAlloc fail reqSize : 61440    totalMem : 645719    CON_NIC_MEM_SEGMENT_SIZE : 3145728
$[03-25,22:37:15/CON/1]ConAdmin_NIC_MemAlloc fail reqSize : 61440    totalMem : 645719    CON_NIC_MEM_SEGMENT_SIZE : 3145728
$[03-25,22:37:15/CON/1]ConAdmin_NIC_MemAlloc fail reqSize : 61440    totalMem : 645719    CON_NIC_MEM_SEGMENT_SIZE : 3145728
$[03-25,22:37:15/CON/1]ConAdmin_NIC_MemAlloc fail reqSize : 61440    totalMem : 645719    CON_NIC_MEM_SEGMENT_SIZE : 3145728
$[03-25,22:37:15/CON/1]ConAdmin_NIC_MemAlloc fail reqSize : 61440    totalMem : 645719    CON_NIC_MEM_SEGMENT_SIZE : 3145728
$[03-25,22:37:15/CON/1]ConAdmin_NIC_MemAlloc fail reqSize : 61440    totalMem : 645719    CON_NIC_MEM_SEGMENT_SIZE : 3145728
$[03-25,22:37:15/CON/1]ConAdmin_NIC_MemAlloc fail reqSize : 61440    totalMem : 645719    CON_NIC_MEM_SEGMENT_SIZE : 3145728
$[03-25,22:37:15/CON/1]ConAdmin_NIC_MemAlloc fail reqSize : 61440    totalMem : 645719    CON_NIC_MEM_SEGMENT_SIZE : 3145728
$[03-25,22:37:15/CON/1]ConAdmin_NIC_MemAlloc fail reqSize : 61440    totalMem : 645719    CON_NIC_MEM_SEGMENT_SIZE : 3145728
$[03-25,22:37:15/CON/1]ConAdmin_NIC_MemAlloc fail reqSize : 61440    totalMem : 645719    CON_NIC_MEM_SEGMENT_SIZE : 3145728
$[03-25,22:37:15/CON/1]ConAdmin_NIC_MemAlloc fail reqSize : 61440    totalMem : 645719    CON_NIC_MEM_SEGMENT_SIZE : 3145728
$[03-25,22:37:15/CON/1]ConAdmin_NIC_MemAlloc fail reqSize : 61440    totalMem : 645719    CON_NIC_MEM_SEGMENT_SIZE : 3145728
$[03-25,22:37:15/CON/1]ConAdmin_NIC_MemAlloc fail reqSize : 61440    totalMem : 645719    CON_NIC_MEM_SEGMENT_SIZE : 3145728
$[03-25,22:37:15/CON/1]ConAdmin_NIC_MemAlloc fail reqSize : 61440    totalMem : 645719    CON_NIC_MEM_SEGMENT_SIZE : 3145728
$[03-25,22:37:15/CON/1]ConAdmin_NIC_MemAlloc fail reqSize : 58092    totalMem : 615607    CON_NIC_MEM_SEGMENT_SIZE : 3145728
$[03-25,22:37:15/CON/1]ConAdmin_NIC_MemAlloc fail reqSize : 61440    totalMem : 645719    CON_NIC_MEM_SEGMENT_SIZE : 3145728
$[03-25,22:37:15/CON/1]ConAdmin_NIC_MemAlloc fail reqSize : 61440    totalMem : 645719    CON_NIC_MEM_SEGMENT_SIZE : 3145728
$[03-25,22:37:15/CON/1]ConAdmin_NIC_MemAlloc fail reqSize : 61440    totalMem : 645719    CON_NIC_MEM_SEGMENT_SIZE : 3145728
$[03-25,22:37:15/CON/1]ConAdmin_NIC_MemAlloc fail reqSize : 58092    totalMem : 615650    CON_NIC_MEM_SEGMENT_SIZE : 3145728

 Similar error log entries are recorded at different parts of the printer's logs.

Can anyone give me any hints and tips to try fix this?