Standard Circuit Diagram - JVC AV32T25EKS Service Manual

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AV32T25EKS / AV32R25EKS
AV32T55EKS / AV32R250EKS
AV32T25EIS
CRT SOCKET PWB PATTERN
W3003
W3204
W3406 R3120
C3103
R3115
R3117
R3112
Q3102
R3129
R3126
W3407
R3108
LCB90002 -001A
W3404
SKT PWB
W3007
H H
TP-47R
10
9
R3154
D3163 RK
8 11
D3156
G2
7
R3153
6
GK
R3152
D3151 5
G1
R3151
Q3151
4
W3405
SK3001
W3008
Q3101
W3203
1 5 8
C3115
R3138
CN008
C3104
W3403
C3116
TP-E W3602
2-32
TOP
Q3106
K3304
R3118
C3310
R3121
R3329
D3302
TP-47B
K3303
C
C3113
BK
R3326
B E
12 Q3307
R3324
C3314
R3325
R3328
Q3311
R3333 R3332
R3320
R3335
C3331
Q3312
R3319
C3311
E1 C3313
C3306
R3318
W3401
W3002
B C E B C E
Q3305
K3101 Q3306 K3302
C3307
W3601 B C E Q3304
1 5 6
C3305
R3313
R3312
CN009
FR3330
No.51968
AV32T25EKS / AV32T25EIS / AV32T55EKS
AV32R25EKS / AV32R250EKS

STANDARD CIRCUIT DIAGRAM

NOTE ON USING CIRCUIT DIAGRAMS
1.SAFETY
The components identified by the
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
(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
4.INDICATIONS ON THE CIRCUIT DIAGRAM
(1)Resistors
Resistance value
No unit
K
M
Rated allowable power
No indication
Others
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
less than 1
Withstand voltage
No indication
Others
AC indicated
Electrolytic Capacitors
47/50[Example]:Capacitance value [µF]/withstand voltage[V]
VP0205
DP8080
Global electronic heritage manuals
Type
symbol and shading are No indication
MM
PP
MPP
MF
TF
BP
TAN
: Colour bar signal
(3)Coils
No unit
Others
: Original setting position
(4)Power Supply
when shipped
:DC 20k /V
:H 20µS/div
:V 5mS/div
Respective voltage values are indicated
:Others
Sweeping time is
(5)Test point
specified
:All DC voltage values
:Test point
(6)Connecting method
:R1209 R209
(7)Ground symbol
:LIVE side ground
:ISOLATED(NEUTRAL) side ground
:EARTH ground
:[ ]
:DIGITAL ground
:[K ]
:[M ]
5.NOTE FOR REPAIRING SERVICE
This model's power circuit is partly different in the GND. The
:1/ 16 [W]
difference of the GND is shown by the LIVE : (
:As specified
ISOLATED(NEUTRAL) : (
taken for the following points.
:Carbon resistor
(1)Do not touch the LIVE side GND or the LIVE side GND and the
:Oxide metal film resistor
ISOLATED(NEUTRAL) side GND simultaneously. If the above
:Metal film resistor caution is not respected, an electric shock may be caused.
Therefore, make sure that the power cord is surely removed from
:Metal plate resistor
the receptacle when, for example, the chassis is pulled out.
:Uninflammable resistor
(2)Do not short between the LIVE side GND and ISOLATED(NEUTRAL)
:Fusible resistor
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.
:[pF]
Since the circuit diagram is a standard one, the circuit and
circuit constants may be subject to change for improvement
:[µF]
without any notice.
:DC50[V]
NOTE
Due improvement in performance, some part numbers show
:DC withstand voltage [V]
in the circuit diagram may not agree with those indicated in
:AC withstand voltage [V]
the part list.
When ordering parts, please use the numbers that appear
in the Parts List.
26/1/2014
AV32T25EKS / AV32R25EKS
AV32T55EKS / AV32R250EKS
AV32T25EIS
:Ceramic capacitor
:Metalized mylar capacitor
:Polypropylene capacitor
:Metalized polypropylene capacitor
:Metalized film capacitor
:Thin film capacitor
:Bipolar electrolytic capacitor
:Tantalum capacitor
:[ µ H]
:As specified
:B2 (12V)
:B1
:5V
:9V
:Only test point display
:Connector :Wrapping or soldering
:Receptacle
) side GND and the
) side GND.Therefore, care must be
May 2002 No. 51968