Panasonic Lumix DMC-GH4H series, Service Manual

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3 Service Navigation
3.1. Introduction
This service manual contains technical information, which allow service personnel’s to understand and service this model.
Please place orders using the parts list and not the drawing reference numbers.
If the circuit is changed or modified, the information will be followed by service manual to be controlled with original service manual.
3.2. About Service of Bundled Lenses
Please refer to the following service manuals about Disassembly and Assembly or Maintenance of bundled lenses.
• H-HS12035PP/E/GK: Order No.DSC1206029CE
• H-FS14140PP/E/GK: Order No.DSC1305023CE
3.3. Important Notice
*When servicing, it is recommended dealing with Clean box. (Refer to “8.2. Clean Box” section of this service manual for details.)
3.3.1. Camera Body Unit
3.3.1.1. About Mount Box Unit (Ref. 12)
1. This Service Manual does not contain the following repair service information for “Mount Box Unit”(Ref.12), because it
requires special facilities and equipment.
a. Schematic diagram, Block diagram and P.C.B. layout.
b. Parts list for individual parts.
2. If the “Mount Box Unit” is confirmed as defective, exchange the “Mount Box Unit” as a unit (supplied as service parts size).
3. Before exchanging the “Mount Box Unit”, the performances must be carefully checked, by following the “7.Troubleshooting
Guide” section of this service manual.
Important:
1. After replacing the Mount Box Unit, the mount box data has to be stored to the unit.
The Mount Box Unit supplied as service parts has affix the label of own configure data.
By inputting these data into the adjustment software and writing these data to Flash-ROM (IC6003), the shutter adjustment
becomes needless.
In addition, the adjustment software can read data encoded to QR Code by using WEB camera with a close-up function.
Refer to the adjustment instruction in the adjustment software for details.
2. The full adjustment must be performed after replacing the “Mount Box Unit”, otherwise picture quality can not be meet with
specification.
3.3.1.2. About Main P.C.B. (Ref. 1) & Flash-ROM(IC6003)
Important:
1. Before exchanging the “Main P.C.B.”, the performances must be carefully checked, by following the “7.Troubleshooting
Guide” section of this service manual.
2. Before replacing the “Main P.C.B. and/or Flash-ROM”, proceed the EEPROM data backup from the unit.
After replacing the Main P.C.B. and/or Flash-ROM, overwrite the EEPROM data with backup data from the unit first, then pro-
ceed the adjustment /inspection.Refer to the adjustment instruction in the adjustment software for details.
3. The full adjustment must be performed after replacing the “Main P.C.B. and/or Flash-ROM”, otherwise Picture quality can not
be met with specification.