Panasonic Lumix DMC-LZ20P User manual

© Panasonic Corporation 2012.
Unauthorized copying and distribution is a violation
of law.
ORDER NO. DSC1208035CE
B26
Digital Camera
Model No. DMC-LZ20P
DMC-LZ20E
DMC-LZ20EE
DMC-LZ20GN
DMC-LZ20PU
DMC-LZ20GC
DMC-LZ20GF
DMC-LZ20GW
DMC-LZ20GK
Colour
(R)...........Red Type
(K)...........Black Type

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TABLE OF CONTENTS
PAGE PAGE
1 Safety Precautions -----------------------------------------------3
1.1. General Guidelines ----------------------------------------3
1.2. Leakage Current Cold Check ---------------------------3
1.3. Leakage Current Hot Check (See Figure 1.)--------3
1.4. How to Discharge the E.Capacitor on the
Frame Unit ---------------------------------------------------4
2Warning--------------------------------------------------------------5
2.1. Prevention of Electrostatic Discharge (ESD)
to Electrostatically Sensitive (ES) Devices ----------5
3 Service Navigation------------------------------------------------6
3.1. Introduction --------------------------------------------------6
3.2. General Description About Lead Free Solder
(PbF) ----------------------------------------------------------6
3.3. Important Notice --------------------------------------------6
3.4. How to Define the Model Suffix (NTSC or PAL
model)---------------------------------------------------------7
4 Specifications ------------------------------------------------------9
5 Location of Controls and Components------------------ 10
6 Service Fixture & Tools --------------------------------------- 12
6.1. Service Fixture and Tools ------------------------------ 12
7 Disassembly and Assembly Instructions--------------- 13
7.1. Disassembly Flow Chart-------------------------------- 13
7.2. PCB Location---------------------------------------------- 13
7.3. Disassembly Procedure -------------------------------- 14
7.4. Lens unit---------------------------------------------------- 22
7.5. Lens Disassembly Procedure------------------------- 22
7.6. Assemble Procedure ------------------------------------ 24
8 Measurements and Adjustments -------------------------- 26
8.1. Introduction ------------------------------------------------ 26
8.2. Matrix chart (Replaced part and Adjustment
item) --------------------------------------------------------- 26
8.3. Adjustment procedure ---------------------------------- 26
9 Maintenance ------------------------------------------------------ 33
9.1. Cleaning Lens and LCD Panel ----------------------- 33
10 Block Diagram --------------------------------------------------- 35
10.1. Overall Block Diagram ---------------------------------- 35
10.2. Power Block Diagram ----------------------------------- 36
11 Wiring Connection Diagram --------------------------------- 37
11.1. Interconnection Schematic Diagram ---------------- 37

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1 Safety Precautions
1.1. General Guidelines
1. IMPORTANT SAFETY NOTICE
There are special components used in this equipment
which are important for safety. These parts are marked by
in the Schematic Diagrams, Circuit Board Layout,
Exploded Views and Replacement Parts List. It is
essential that these critical parts should be replaced with
manufacturer’s specified parts to prevent X-RADIATION,
shock, fire, or other hazards. Do not modify the original
design without permission of manufacturer.
2. An Isolation Transformer should always be used during
the servicing of AC Adaptor whose chassis is not isolated
from the AC power line. Use a transformer of adequate
power rating as this protects the technician from
accidents resulting in personal injury from electrical
shocks. It will also protect AC Adaptor from being
damaged by accidental shorting that may occur during
servicing.
3. When servicing, observe the original lead dress. If a short
circuit is found, replace all parts which have been
overheated or damaged by the short circuit.
4. After servicing, see to it that all the protective devices
such as insulation barriers, insulation papers shields are
properly installed.
5. After servicing, make the following leakage current
checks to prevent the customer from being exposed to
shock hazards.
1.2. Leakage Current Cold Check
1. Unplug the AC cord and connect a jumper between the
two prongs on the plug.
2. Measure the resistance value, with an ohmmeter,
between the jumpered AC plug and each exposed
metallic cabinet part on the equipment such as
screwheads, connectors, control shafts, etc. When the
exposed metallic part has a return path to the chassis, the
reading should be between 1 MΩand 5.2 MΩ. When the
exposed metal does not have a return path to the chassis,
the reading must be infinity.
1.3. Leakage Current Hot Check
(See Figure 1.)
1. Plug the AC cord directly into the AC outlet. Do not use
an isolation transformer for this check.
2. Connect a 1.5 kΩ, 10 W resistor, in parallel with a 0.15 μF
capacitor, between each exposed metallic part on the set
and a good earth ground, as shown in Figure 1.
3. Use an AC voltmeter, with 1 kΩ/V or more sensitivity, to
measure the potential across the resistor.
4. Check each exposed metallic part, and measure the
voltage at each point.
5. Reverse the AC plug in the AC outlet and repeat each of
the above measurements.
6. The potential at any point should not exceed 0.75 V RMS.
A leakage current tester (Simpson Model 229 or
equivalent) may be used to make the hot checks, leakage
current must not exceed 1/2 mA. In case a measurement
is outside of the limits specified, there is a possibility of a
shock hazard, and the equipment should be repaired and
rechecked before it is returned to the customer.
Figure. 1

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1.4. How to Discharge the E.Capacitor on the Frame Unit
CAUTION:
1. Make sure to discharge the E.capacitor on the Frame Unit.
2. Be careful of the high voltage circuit on the Frame Unit when servicing.
[Discharging Procedure]
1. Refer to the disassemble procedure and remove the necessary parts/unit.
2. Install the insulation tube onto the lead part of resistor (ERG5SJ102:1kΩ/5W).
(an equivalent type of resistor may be used.)
3. Place a resistor between both terminals of E.capacitor on the Frame Unit for approx. 5 seconds.
4. After discharging, confirm that the E.capacitor voltage is lower than 10V using a voltmeter.
Fig. F1

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2Warning
2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically
Sensitive (ES) Devices
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called
Electrostatically Sensitive (ES) Devices.
The following techniques should be used to help reduce the incidence of component damage caused by electrostatic discharge
(ESD).
1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on your
body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap,
which should be removed for potential shock reasons prior to applying power to the unit under test.
2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as
aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.
4. Use only an antistatic solder removal device. Some solder removal devices not classified as "antistatic (ESD protected)" can
generate electrical charge sufficient to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.
6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most
replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or
comparable conductive material).
7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material
to the chassis or circuit assembly into which the device will be installed.
CAUTION :
Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.
8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the
brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD)
sufficient to damage an ES device).

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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. General Description About Lead Free Solder (PbF)
The lead free solder has been used in the mounting process of all electrical components on the printed circuit boards used for this
equipment in considering the globally environmental conservation.
The normal solder is the alloy of tin (Sn) and lead (Pb). On the other hand, the lead free solder is the alloy mainly consists of tin
(Sn), silver (Ag) and Copper (Cu), and the melting point of the lead free solder is higher approx.30°C (86°F) more than that of the
normal solder.
Distinction of P.C.B. Lead Free Solder being used
Service caution for repair work using Lead Free Solder (PbF)
• The lead free solder has to be used when repairing the equipment for which the lead free solder is used.
(Definition: The letter of “PbF” is printed on the P.C.B. using the lead free solder.)
• To put lead free solder, it should be well molten and mixed with the original lead free solder.
• Remove the remaining lead free solder on the P.C.B. cleanly for soldering of the new IC.
• Since the melting point of the lead free solder is higher than that of the normal lead solder, it takes the longer time to melt the
lead free solder.
• Use the soldering iron (more than 70W) equipped with the temperature control after setting the temperature at 350±30°C
(662±86°F).
Recommended Lead Free Solder (Service Parts Route.)
• The following 3 types of lead free solder are available through the service parts route.
RFKZ03D01KS-----------(0.3mm 100g Reel)
RFKZ06D01KS-----------(0.6mm 100g Reel)
RFKZ10D01KS-----------(1.0mm 100g Reel)
Note
* Ingredient: tin (Sn) 96.5%, silver (Ag) 3.0%, Copper (Cu) 0.5%, Cobalt (Co) / Germanium (Ge) 0.1 to 0.3%
3.3. Important Notice
After replacing the MAIN P.C.B. and / or the Lens Unit, be sure to achieve adjustment.
Refer to the procedure described in "8. Measurements and Adjustments".

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3.4. How to Define the Model Suffix (NTSC or PAL model)
There are six kinds of DMC-LZ20, regardless of the colours.
• a) DMC-LZ20P
• b) DMC-LZ20E
• c) DMC-LZ20EE
• d) DMC-LZ20GN
• e) DMC-LZ20GK
• f) DMC-LZ20PU/GC/GF/GW
What is the difference is that the “Initial Setting” data which is stored in Flash-ROM mounted on MAIN P.C.B..
3.4.1. Defining methods:
To define the model suffix to be serviced, refer to the nameplate which is putted on the bottom side of the Unit.
NOTE:
After replacing the MAIN P.C.B., make sure to perform the “Initial Setting” and “adjustment”.
The adjustment software is available at "TSN Website".

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3.4.2. Initial Setting
1. Execute the Sales Area Setting Tool
2. Connect the DSC to PC by USB cable
1. Set the battery to the camera.
2. Turn off the power.
3. Press "Tele" + "Menu/Set" + "Playback" key at the same time. It starts in the state of "Engineer Mode" automatically.
4. Connect the DSC to PC by USB cable.
3. Sales Area Setting automatically

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4 Specifications
NOTE:
The following specification is for DMC-LZ20. Some specifications may differ depending on model suffix.

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5 Location of Controls and Components
NOTE:
The following description is for DMC-LZ20. Some descriptions may differ depending on model suffix.

11

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6 Service Fixture & Tools
6.1. Service Fixture and Tools
The following Service Fixture and tools are used for checking and servicing this unit.
REMARKS
1. ABOUT “LIGHT BOX”:

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7 Disassembly and Assembly Instructions
7.1. Disassembly Flow Chart
This is a disassembling chart.
When installing, perform this chart conversely.
7.2. PCB Location

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7.3. Disassembly Procedure 7.3.1. Removal of the Rear Case Unit
(Fig. D1)
(Fig. D2)
No. Item Fig Removal
1 Rear Case Unit (Fig. D1) Card
Battery
(Fig. D2) 2 Screws (A)
(Fig. D3) 1 Screw (B)
1 Screw (C)
1 Screw (D)
(Fig. D4) 4 Screws (E)
2 Screws (F)
(Fig. D5) 1 Screw (G)
(Fig. D6) 2 Screws (H)
(Fig. D7) Rear Case Unit
2 LCD Unit (Fig. D8) Connector (A)
LCD Unit
3 Frame Plate (Fig. D9) 6 Screws (I)
Frame Plate
Tripod
4 Top Case Unit (Fig. D10) 1 Screw (J)
(Fig. D11) Connector (B)
Top Case Unit
5 Main P.C.B. (Fig. D12) 2 Screws (K)
FPC Sheet 1
FPC Sheet 2
(Fig. D13) Connector (C)
Connector (D)
Connector (E)
Connector (F)
Flash FPC
10 Solders
Jack Holder
Main P.C.B.
6 Lens Unit (Fig. D14) 3 Screws (L)
Lens Unit
7 Front Case Unit (Fig. D15) Flash Sheet
(Caution for Discharging)
(Fig. D16) 6 Screw (M)
Front Case Unit
(Fig. D17) Jack Cover
AF Light Cover
Flash Open Button
8 Speaker Unit (Fig. D18) 1 Screw (N)
Strap R
Speaker Unit
9 Plate L (Fig. D19) 1 Screw (O)
Strap L
Plate L
10 Battery Door Unit (Fig. D20) Battery Door Shaft
Battery Door Unit
11 SW P.C.B. (Fig. D21) 1 Screw (P)
SW P.C.B.

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(Fig. D3)
(Fig. D4)
(Fig. D5)
(Fig. D6)

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(Fig. D7)
7.3.2. Removal of the LCD Unit
(Fig. D8)
7.3.3. Removal of the Frame Plate
(Fig. D9)
7.3.4. Removal of the Top Case Unit
(Fig. D10)

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(Fig. D11)
7.3.5. Removal of the Main P.C.B.
(Fig. D12)

18
(Fig. D13)

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7.3.6. Removal of the Lens Unit
NOTE:
When Disassembling and Installing for the Lens Unit
1. Take care that the dust and dirt are not entered into the
lens. In case of the dust is putted on the lens, blow off
them by airbrush.
2. Do not touch the surface of lens.
3. Use lens cleaning KIT(BK) (VFK1900BK).
(Fig. D14)
7.3.7. Removal of the Front Case Unit
(Fig. D15)

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(Fig. D16)
(Fig. D17)
7.3.8. Removal of the Speaker Unit
(Fig. D18)