Panasonic Toughpad FZ-G1 MK4 - Revision history

Polymorphic7: OCD thingy

2025-04-11T01:32:36Z

OCD thingy

Polymorphic7: some improvements + documentation = key

2025-04-03T11:57:21Z

some improvements + documentation = key

Polymorphic7: mark 5 added, both are very similar anyway.

2025-03-12T10:47:31Z

mark 5 added, both are very similar anyway.

Polymorphic7: minor info added

2025-01-30T09:41:30Z

minor info added

Polymorphic7: typo

2025-01-29T21:24:35Z

typo

Polymorphic7: typo

2025-01-29T21:13:37Z

typo

Polymorphic7 at 21:10, 29 January 2025

2025-01-29T21:10:02Z

Polymorphic7: lil change

2025-01-29T20:56:51Z

lil change

Polymorphic7: new issue I found out in the MK5 update for the wiki.

2025-01-29T20:52:01Z

new issue I found out in the MK5 update for the wiki.

Polymorphic7: typo

2024-07-23T22:43:22Z

typo

@@ Line 43: / Line 43: @@
 <gallery widths=302 heights=182>
 File:Signature ALC256 MK4.jpg|ALC256 shorted in the FZ-G1 MK4.
-File:ALC231 schematic.png|ALC231 schematic (closest match)
+File:ALC231 schematic.png|ALC231 schematic (closest match).
 </gallery>

@@ Line 26: / Line 26: @@
 =====Known issues=====
-*ALC256 shorted 3.3vdc or 5vdc rail. The audio circuit design is not done proper, the ALC will die after a while, the 8ohm speaker output is poor, even on a working tablet.
+:*ALC256 shorted 3.3vdc or 5vdc rail. The audio circuit design is not done proper, the ALC will die after a while, the 8ohm speaker output is poor, even on a working tablet.
-*TPS51367 shorted killing the CPU or RAM (TPS51367 is a 3-V to 22-V, 12-A synchronous buck converter with ultra-low quiescent current).
+:*TPS51367 shorted killing the CPU or RAM (TPS51367 is a 3-V to 22-V, 12-A synchronous buck converter with ultra-low quiescent current).
 =====Improvements in MK5=====
-In de MK5 board revision noted as '''DHLB1277ZC/X1''' in the silkscreen a few design changes were made.
+: In de MK5 board revision noted as '''DHLB1277ZC/X1''' in the silkscreen a few design changes were made.
-*CPU was changed from SR2F0 (Intel Core i5-6300U) to SR340 (Intel Core i5-7300U).
+:*CPU was changed from SR2F0 (Intel Core i5-6300U) to SR340 (Intel Core i5-7300U).
-*Onboard RAM was doubled from 4096mb to 8192mb.
+:*Onboard RAM was doubled from 4096mb to 8192mb.
-*The audio circuit and codec were changed from ALC256 to ALC295.
+:*The audio circuit and codec were changed from ALC256 to ALC295.
-*WWAN simcard slot changed from standard SIM 25x15mm size to 12.3x8.8mm nano SIM size.
+:*WWAN simcard slot changed from standard SIM 25x15mm size to 12.3x8.8mm nano SIM size.
-*Trusted Platform Module (TPM) chip was changed, can't find anything about it (a good thing I guess, it's under NDA). The IC is made by STMicroelectronics.
+:*Trusted Platform Module (TPM) chip was changed, can't find anything about it (a good thing I guess, it's under NDA). The IC is made by STMicroelectronics.
 =====Known issues in the MK5=====
-The audio circuit / codec Realtek ALC295 is still flawed. The audio IC fails either open circuit or short circuit, one of the failure modes I have encountered was it still being detected (aplay -l) but only outputting white noise, static noise, or snow throught the 3.5mm audio headphone jack on the HPOUT_R & HPOUT_L pins while the HP_JD (jack detect) was pulled to ground the output from the presummably the mixer block had failed inside the ALC295 IC. The built-in audio class d amplifier block for the internal speaker (not the headphone driver block) inside the ALC295 did not generate any noise (dead silent). However I was unable to find any datasheet or boardview that intergrates the ALC256 or ALC295 I was unable to look deeper in this problem. Not to mention that both codec's show a awful lot of issues on kernel.org or various other linux bugreport places it does indicate to me that these models of Realtek ALC were flawed by design and this is why they are quickly been replace by their successor.
+: The audio circuit / codec Realtek ALC295 is still flawed. The audio IC fails either open circuit or short circuit, one of the failure modes I have encountered was it still being detected (aplay -l) but only outputting white noise, static noise, or snow throught the 3.5mm audio headphone jack on the HPOUT_R & HPOUT_L pins while the HP_JD (jack detect) was pulled to ground the output from the presummably the mixer block had failed inside the ALC295 IC. The built-in audio class d amplifier block for the internal speaker (not the headphone driver block) inside the ALC295 did not generate any noise (dead silent). However I was unable to find any datasheet or boardview that intergrates the ALC256 or ALC295 I was unable to look deeper in this problem. Not to mention that both codec's show a awful lot of issues on kernel.org or various other linux bugreport places it does indicate to me that these models of Realtek ALC were flawed by design and this is why they are quickly been replace by their successor.
 =====AMI Model No. Configuration Port Modules=====
-Here's a list of module expansion configurations.
+: Here's a list of module expansion configurations.
-* "FZ-G1R0008T3" for No option (blank port)
+:* "FZ-G1R0008T3" for No option (blank port)
-* "FZ-G1R6031T3" for Panasonic Gigabit LAN Port
+:* "FZ-G1R6031T3" for Panasonic Gigabit LAN Port
-* "FZ-G1R0010T3" for Panasonic 1D/2D Barcode Reader
+:* "FZ-G1R0010T3" for Panasonic 1D/2D Barcode Reader
-* "FZ-G1RxxxxTx" for USB port
+:* "FZ-G1RxxxxTx" for USB port

@@ Line 1: / Line 1: @@
 The Panasonic Toughpad G1 (FZ-G1 MK4) is a portable industrial rugged field computer.
-This page is '''dedicated to reparing''' the '''Panasonic Toughpad FZ-G1 MK4'''.
+This page is '''dedicated to reparing''' the '''Panasonic Toughpad FZ-G1 MK4 & MK5'''.
 [[File:Panasonic rugged tablet pse.png|frameless|640x480px|thumb|left]]

@@ Line 39: / Line 39: @@
 =====Known issues in the MK5=====
-The audio circuit / codec Realtek ALC295 is still flawed. The audio IC fails either open circuit or short circuit, one of the failure modes I have encountered was it still being detected (aplay -l) but only outputting white noise, static noise, or snow throught the 3.5mm audio headphone jack on the HPOUT_R & HPOUT_L pins while the HP_JD (jack detect) was pulled to ground the output from the presummably the mixer block had failed inside the ALC295 IC. The built-in audio class d amplifier block inside the ALC295 did not generate any noise (dead silent). However I was unable to find any datasheet or boardview that intergrates the ALC256 or ALC295 I was unable to look deeper in this problem. Not to mention that both codec's show a awful lot of issues on kernel.org or various other linux bugreport places it does indicate to me that these models of Realtek ALC were flawed by design and this is why they are quickly been replace by their successor.
+The audio circuit / codec Realtek ALC295 is still flawed. The audio IC fails either open circuit or short circuit, one of the failure modes I have encountered was it still being detected (aplay -l) but only outputting white noise, static noise, or snow throught the 3.5mm audio headphone jack on the HPOUT_R & HPOUT_L pins while the HP_JD (jack detect) was pulled to ground the output from the presummably the mixer block had failed inside the ALC295 IC. The built-in audio class d amplifier block for the internal speaker (not the headphone driver block) inside the ALC295 did not generate any noise (dead silent). However I was unable to find any datasheet or boardview that intergrates the ALC256 or ALC295 I was unable to look deeper in this problem. Not to mention that both codec's show a awful lot of issues on kernel.org or various other linux bugreport places it does indicate to me that these models of Realtek ALC were flawed by design and this is why they are quickly been replace by their successor.
 =====AMI Model No. Configuration Port Modules=====

@@ Line 39: / Line 39: @@
 =====Known issues in the MK5=====
-The audio circuit / codec Realtek ALC295 is still flawed. The audio IC fails either open circuit or short circuit, one of the failure modes I have encountered was it still being detected (aplay -l) but only outputting white noise, static noise, or snow throught the 3.5mm audio headphone jack on the HPOUT_R & HPOUT_L pins while the HP_JD (jack detect) was pulled to ground the output from the presummably the mixer block had failed inside the ALC295 IC. The built-in audio class d amplifier block inside the ALC295 did not generate any noise (dead silent). However I was unable to find any datasheet or boardview that intergrates the ALC256 or ALC295 I was unable to look deeper in this problem. Not to mention that both codec's show a awful a lot of issues on kernel.org or various other linux bugreport places it does indicate to me that these models of Realtek ALC were flawed by design and this is why they are quickly been replace by their successor.
+The audio circuit / codec Realtek ALC295 is still flawed. The audio IC fails either open circuit or short circuit, one of the failure modes I have encountered was it still being detected (aplay -l) but only outputting white noise, static noise, or snow throught the 3.5mm audio headphone jack on the HPOUT_R & HPOUT_L pins while the HP_JD (jack detect) was pulled to ground the output from the presummably the mixer block had failed inside the ALC295 IC. The built-in audio class d amplifier block inside the ALC295 did not generate any noise (dead silent). However I was unable to find any datasheet or boardview that intergrates the ALC256 or ALC295 I was unable to look deeper in this problem. Not to mention that both codec's show a awful lot of issues on kernel.org or various other linux bugreport places it does indicate to me that these models of Realtek ALC were flawed by design and this is why they are quickly been replace by their successor.
 =====AMI Model No. Configuration Port Modules=====