HV-44PRO, HV-44PRO
/-A
, HV-44PRO
/EE
, HV-44PRO
STANDARD CIRCUIT DIAGRAM
/M
CONTENTS
SEMICONDUCTOR SHAPES........................................................................2-2
BLOCK DIAGRAMS .....................................................................................2-3
NOTE ON USING CIRCUIT DIAGRAMS
1.SAFETY
The components identified by the symbol and shading are
critical for safety. For continued safety replace safety ciritical
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 : Colour bar signal
(2)Setting positions of
each knob/button and
variable resistor
(3)Internal resistance of tester
(4)Oscilloscope sweeping time
(5)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]
In the PW board
: R1209
4.INDICATIONS ON THE CIRCUIT DIAGRAM
(1)Resistors
Resistance value
No un i t :[
K
M
Rated allowable power
No indication : 1/16 [W]
Others : As specified
Type
No indication
OMR
MFR
MPR
UNFR
FR
Composition resistor 1/2 [W] is specified as 1/2S or Comp.
(2)Capacitors
Capacitance value
1 or higher : [pF]
less than 1
Withstand voltage
No indication : DC50[V]
Others : DC withstand voltage [V]
AC indicated
Electrolytic Capacitors
47/50[Example]: Capacitance value [µF]/withstand voltage[V]
: [k
: [M
: Carbon resistor
: Oxide metal film resistor
: Metal film resistor
: Metal plate resistor
: Uninflammable resistor
: Fusible resistor
: [µF]
: AC withstand voltage [V]
: Original setting position
when shipped
: DC 20k
: H
: V
: Othters
: All DC voltage values
R209
]
]
]
/V
20µs / div
5ms / div
Sweeping time is
specified
Type
No indication
MM
PP
MPP
MF
TF
BP
TAN
(3)Coils
No unit
Others
(4)Test point
: Test point
(5)Connecting method
(6)Ground symbol
: LIVE side ground
: ISOLATED(NEUTRAL) side ground
: EARTH ground
: DIGITAL ground
: Ceramic capacitor
: Metalized mylar capacitor
: Polypropylene capacitor
: Metalized polypropylene capacitor
: Metalized film capacitor
: Thin film capacitor
: Bipolar electrolytic capacitor
: Tantalum capacitor
: [µH]
: As specified
: Only test point display
: Connector
: Receptacle
: Wrapping or soldering
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 : ( ) side GND and the
ISOLATED(NEUTRAL) : ( ) 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 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.
Since the circuit diagram is a standard one, the circuit and
circuit constants may be subject to change for improvement
without any notice.
NOTE
Due improvement in performance, some part numbers show
in the circuit diagram may not agree with those indicated in
the part list.
When ordering parts, please use the numbers that appear
in the Parts List.
CIRCUIT DIAGRAMS....................................................................................2-7
MAIN PWB CIRCUIT DIAGRAM ................................................................................................................ 2-7
MAIN2 PWB CIRCUIT DIAGRAM .............................................................................................................. 2-9
AV PWB CIRCUIT DIAGRAM ...................................................................................................................2-11
100Hz PWB CIRCUIT DIAGRAM ............................................................................................................. 2-13
CPT PWB CIRCUIT DIAGRAM ................................................................................................................ 2-15
SIDE AV PWB CIRCUIT DIAGRAM ......................................................................................................... 2-16
DIGIT AL CONVERGENCE PWB CIRCUIT DIAGRAM .............................................................................. 2-17
CONVERGENCE OUT PWB CIRCUIT DIAGRAM .................................................................................... 2-19
SMPS PWB CIRCUIT DIAGRAM............................................................................................................. 2-21
VM PWB CIRCUIT DIAGRAM.................................................................................................................. 2-23
MICOM PWB CIRCUIT DIAGRAM ........................................................................................................... 2-25
CONTROL & PRE AMP PWB CIRCUIT DIAGRAM.................................................................................. 2-27
POWER SW, POWER SW INTERFACE & CONTROL INTERFACE PWB CIRCUIT DIAGRAM ............... 2-28
PATTERN DIAGRAMS .............................................................................. 2-29
MAIN PWB P ATTERN .............................................................................................................................. 2-29
MAIN2 PWB P ATTERN ............................................................................................................................ 2-31
AV PWB PATTERN .................................................................................................................................. 2-33
100Hz PWB P ATTERN ............................................................................................................................. 2-35
CPT PWB PA TTERN................................................................................................................................ 2-37
VM PWB PATTERN ................................................................................................................................. 2-39
DIGIT AL CONVERGENCE PWB PATTERN.............................................................................................. 2-41
CONVERGENCE OUT PWB P A TTERN .................................................................................................... 2-43
CONTROL PWB PATTERN ...................................................................................................................... 2-43
POWER SW PWB PA TTERN................................................................................................................... 2-43
SIDE AV PWB PATTERN ......................................................................................................................... 2-44
PRE AMP PWB PATTERN....................................................................................................................... 2-44
SMPS PWB PATTERN............................................................................................................................. 2-45
CONTROL INTERF ACE PWB PATTERN.................................................................................................. 2-45
POWER SW INTERFACE PWB PATTERN............................................................................................... 2-46
MICOM PWB P ATTERN........................................................................................................................... 2-47
SEMICONDUCTOR SHAPES
TRANSISTOR
BOTTOM VIEW FRONT VIEW TOP VIEW
E
C
)
B
IC
BOTTOM VIEW FRONT VIEW TOP VIEW
OUT
E
IN
CHIP IC
N
ECB
IN OUTE
N
B
(G)E(S)C(D)
TOP VIEW
1 N
1
ECB
ECB
1 N
CHIP TR
1
C
BE
N
N
No.52118 No.52118
2-22-1
1
N
N