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TM-1650SDU
TM-1650SDU STANDARD CIRCUIT DIAGRAM
• NOTE ON USING CIRCUIT DIAGRAMS
1. SAFETY
The components identified by the.11. symbol and shading are
critical for safety. For continued safety replace safety critical
components only with manufactures recommended parts.
2.SPECIFIED VOLTAGE AND WAVEFORM VALUES
The voltage and waveform values have been measured under the
following conditions.
(1 )Input signal
(2)Setting
positions
of
each knob/button
and
variable resistor
(3)Internal resistance of tester
:PAL Colour bar signal
:Original setting position
when shipped
:DC 20kQN
(4)Oscilloscope sweeping time
:H
~
20µS/div
(S)Voltage values
:V
~
SmS/div
:Others
~
Sweeping time is
specified
:All DC voltage values
*
Since the voltage values of signal circuit vary to some extent
according to adjustments, use them as reference values.
3.INDICATION OF PARTS SYMBOL [EXAMPLE]
eln the PW board
:R1209-.R209
4.INDICATIONS ON THE CIRCUIT DIAGRAM
(1)Resistors
eResistance value
No unit
K
M
:[QJ
:[KQJ
:[MQJ
eRated allowable power
No indication
:1/10[WJ
Others
:As specified
eType
No indication
OMR
MFR
MPR
UNFR
:Carbon resistor
:Oxide metal film resistor
:Metal film resistor
:Metal plate resistor
:Uninflammble resistor
FR
:Fusible resistor
*Composition resistor 1/2 [WJ is specified as 1/2S or Comp.
(2)Capacitors
ecapacitance value
1 or higher
:[pFJ
less than 1
:[µFJ
ewithstand voltage
No indication
:DCS0[VJ
Others
:DC withstand voltage [VJ
AC indicated
:AC withstand voltage [VJ
*Electrolytic Capacitors
47/S0[ExampleJ:Capacitance value [µFJ/withstand voltage[VJ
eType
No indication
MY
:Ceramic capacitor
:Mylar capacitor
MM
pp
MPP
MF
:Metalized mylar capacitor
:Polypropylene capacitor
:Metalized polypropylene capacitor
:Metalized film capacitor
TF
:Thin film capacitor
BP
TAN
:Bipolar electrolytic capacitor
:Tantalum capacitor
(3)Coils
No unit
:[µHJ
Others
:As specified
(4)Power Supply
:B1
----
:B2(12V)
•o•o
:9v
D DOD
:SV
*Respective voltage values are indicated
(5)Test point
@
I
:Test point
•
:Only test point display
(6)Connecting method
D
:Connector
Q
:Wrapping or soldering
----->- ----. }-
:Receptacle
(?)Ground symbol
J_
:LIVE side ground
,J,.
:ISOLATED(NEUTRAL)
side ground
,½
:EARTH ground
~
:DIGITAL ground
5.NOTE FOR REPAIRING SERVICE
This model's power circuit is partly different in the GND. The
difference of the GND is shown by the LIVE : (
.l)
side GND and the
ISOLATED(NEUTRAL)
: (
,l,.)
side GND. Therefore, care must be
taken for the following points.
(1 )Do not touch the LIVE side GND or the LIVE side GND and the
ISOLATED(NEUTRAL)
side GND simultaneously.
If the above
caution is not respected, an electric shock may be caused.
Therefore, make sure that the power cord is surely removed from
the receptacle when, for example, the chassis is pulled out.
(2)Do
not
short
between
the
LIVE
side
GND
and
ISOLATED(NEUTRAL)
side GND or never measure with a
measuring apparatus ( oscilloscope, etc.) the LIVE side GND and
ISOLATED(NEUTRAL)
side GND at the same time. If the above
precaution is not respected , a fuse or any parts will be broken.
O
Since the circuit diagram is a standard one, the circuit and
circuit constants may be subject to change for improvement
without any notice.
May 2000 No.51702
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