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Model
AG-MX70E AG-MX70MC AG-YA70P AG-VE70P
Pages
127
Size
30.43 MB
Type
PDF
Document
Service Manual
Brand
Device
Provideo / DIGITAL AV MIXER
File
ag-mx70e-ag-mx70mc-ag-ya70p-ag-ve70p.pdf
Date

Panasonic AG-MX70E / AG-MX70MC / AG-YA70P / AG-VE70P Service Manual ▷ View online

- 4 -
AG-YA70P
AG-VE70P
- 5-
Caution for AC Mains Lead
FOR YOUR SAFETY PLEASE READ THE FOLLOWING TEXT CAREFULLY.
This product is equipped with 2 types of AC mains cable. One is for continental Europe, etc. and the other one is only for 
U.K.
Appropriate mains cable must be used in each local area, since the other type of mains cable is not suitable.
FOR CONTINENTAL EUROPE, ETC.
Not to be used in the U.K.
FOR U.K. ONLY
If the plug supplied is not suitable for your socket
outlet, it should be cut off and appropriate one fitted.
This appliance is supplied with a moulded three pin 
mains plug for your safety and convenience.
A 13 amp fuse is fitted in this plug.
Should the fuse need to be replaced please ensure that 
the replacement fuse has a rating of 13 amps and that 
it is approved by ASTA or BSI to BS1362.
Check for the ASTA mark     or the BSI mark     on the 
body of the fuse.
If the plug contains a removable fuse cover you must 
ensure that it is refitted when the fuse is replaced.
If you lose the fuse cover the plug must not be used 
until a replacement cover is obtained.
A replacement fuse cover can be purchased from your 
local Panasonic Dealer.
IF THE FITTED MOULDED PLUG IS UNSUITABLE 
FOR THE SOCKET OUTLET IN YOUR HOME THEN 
THE FUSE SHOULD BE REMOVED AND THE PLUG 
CUT OFF AND DISPOSED OF SAFELY. THERE IS A 
DANGER OF SEVERE ELECTRICAL SHOCK IF THE 
CUT OFF PLUG IS INSERTED INTO ANY 13 AMP 
SOCKET.
If a new plug is to be fitted please observe the wiring 
code as shown below.
If in any doubt please consult a qualified electrician.
WARNING: THIS APPLIANCE MUST BE EARTHED.
IMPORTANT: The wires in this mains lead are coloured 
in accordance with the following code:
          Green-and-Yellow:
          Blue:
          Brown:
FOR U.K. ONLY
Earth
Neutral
Live
As the colours of the wires in the mains lead of this 
appliance may not correspond with the coloured mark-
ings identifying the terminals in your plug, proceed as 
follows:
How to replace the fuse
1.  Open the fuse compartment with a screwdriver.
2.  Replace the fuse.
The wire which is coloured GREEN-AND-YELLOW 
must be connected to the terminal in the plug which is 
marked with the letter E or by the Earth symbol     or 
coloured GREEN or GREEN-AND-YELLOW.
The wire which is coloured BLUE must be connected 
to the terminal in the plug which is marked with the 
letter N or coloured BLACK.
The wire which is coloured BROWN must be con-
nected to the terminal in the plug which is marked with 
the letter L or coloured RED.
Fuse
- 6 -
GENERAL GUIDELINES
1.  When servicing, observe the original lead dress. If a short
circuit is found, replace all parts which have been over-
heated or damaged by the short circuit.
2.  After servicing, see to it that all the protective devices
such as insulation barriers, insulation papers shields are
properly installed.
3. After servicing, make the following leakage current
checks to prevent the customer from being exposed to
shock hazards.
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 ohm meter,
between the jumpered AC plug and each exposed
metallic cabinet part on the equipment such as
screwheads, connectors, control shafts, etc. The
resistance value must be more than 5M
Ω.
Figure1
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 1.5k
, 10W resistor, in parallel with a 0.15µ
F capacitor, between each exposed metallic part on the
set an a good earth ground such as a water pipe, as
shown in Figure1.
3. Use an AC voltmeter, with 1000 ohms/volt or more
sensitivity, to measure the potential across the resistor.
4. Check each exposed metallic part, and measure the
voltage at each point.
5. Reverses the AC plug in the AC outlet repeat each of the
above measurements.
6. The potential at any point should not exceed 0.15 volts
RMS. A leakage current tester (Simpson Model 229
equivalent) may be used to make the hot checks, leakage
current must not exceed 0.1 milliamp. 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.
ELECTROSTATICALLY SENSITIVE (ES) DEVICES
Some semiconductor (solid state) devices can be damaged
easily by static electricity. Such components commonly are
called Electrostatically sensitive (ED) Devices. Examples of
typical ES devices are integrated circuits and some field-
effect transistors and semiconductor “chip” components.  The
following techniques should be used to help reduce the
incidence of component damage caused by static electricity.
1. Immediately before handling any semiconductor
component or semiconductor-equipped assembly, drain
off any electrostatic charge on your body by touching a
known earth ground.
Alternatively, obtain and wear a commercially available
discharging wrist trap device, 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 anti-static solder removal device classified as
“anti-static” can generate electrical charges 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 package 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 unpacked
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 sufficient to damage an ES device).
X-RADIATION
WARNING
1. The potential source of X-radiation in EVF sets is the
High Voltage section and the picture tube.
2. When using a picture tube test jig for service, ensure that
jig is capable of handling 10kV without causing x-
radiation.
Note :
It is important to use an accurate periodically
calibrated high voltage meter.
3. Measure the High Voltage. The meter (electric type)
reading should indicate 2.5kV,
0.15kV. If the meter
indication is out of tolerance, immediate service and
correction is required to prevent the possibility of
premature component failure. To prevent an x-radiation
possibility, it is essential to use the specified picture tube.
SAFETY PRECAUTIONS
±
ABOUT LEAD FREE SOLDER (PbF)
Distinction of Pbf PCB :
PCBs (manufactured) using lead  free solder will have  a Pbf
stamp on the PCB.
Caution :
1.   Pb  free  solder  has a high  melting  point  than standerd
      solder;  Typically  the melting  point  is 50-70˚F (30-40˚C)
      higher. Please use  a  high temperature soldering iron. In
      case  of  the soldering  iron with  temperature  control,
      please set it to 700
± 2 0
˚F (370
± 1 0
˚C).
2.   Pb  free  solder will  tend to splash when heated too high
      (about 1100˚F/600˚C)
AC VOLTMETER
Hot-Check Circuit
TO
APPLIANCES
EXPOSED
METAL PARTS
COLD
WATER PIPE
(EARTH GROUND)
1500
0.15µF
10W
HCD0209NYAA425
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