JVC AV-T2922/AR Schematics
AV-T2922
STANDARD CIRCU IT DIAGRAM
NOTE ON USING CIRCUIT DIAGRAMS
1.SAFETY
The components identified by the symbol and shading are
critical for safety. For continued safety replace safety critical
components only with ma nu factures 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
:DC 20k
/V
(4)Oscilloscope sweeping time
:H
20µS/div
:V
5mS/div
:Others
Sweeping time is
specified
(5)Voltage values
: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]
In the PW board
:R1209
R209
4.INDICATIONS ON THE CIRCUIT DIAGRAM
(1)Resistors
Resistance value
No unit :[
]
K
:[K
]
M
Rated allowable power
No indication :1/ 16 [W]
Others :As specified
Type
No indication
:Carbon resistor
OMR
:Oxide metal fil m r esistor
MFR
:Meta l film resistor
MPR
:Metal plate resistor
UNFR
:Uninflammable resistor
FR
:Fusible resistor
Composition resistor 1/2 [W] is specif ied a s 1/2S or Co mp.
(2)Capacitors
: Original setting position
when shipped
5.NOTE FOR REPAIR ING S ERVI CE
This mod el's power cir cuit is pa rtly diffe rent 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 ci rcuit and
circuit constants may be subject to change for improvement
without any notice.
NOTE
Due improvement in performance, some part numbers show
in th e ci rcui t diag ram may not agre e with th ose ind icate d in
the part list.
When ordering parts, pl ease use the numbers that appear
in the Pa rts List.
Type
MM
:Metalized mylar capacitor
PP
:Polypropylene capacitor
MPP
:Metalized polypropylene capacitor
MF
:Metalized film capacitor
TF
:Thin film capacitor
BP
:Bipolar electrolytic capacitor
TAN
:Tantalum capacitor
(3)Coils
No unit
:[
µ
H]
Others
:As specified
(4)Power Supply
:B1
:9V
:5V
Respective voltage values are indicated
(5)Test point
:T est point
:Only test point display
(6)Connecting method
:Connector
:Wrapping or soldering
:Receptacle
(7)Ground symbol
:LIVE side ground
:ISOLATED(NEUTRAL) side groun d
:EARTH ground
:DIGITAL ground
:[M ]
Capacitance value
1 or higher :[pF]
less than 1
:[µF]
Withstand voltage
No indication :DC50[V]
Others :DC withstand voltage [V]
AC indicated
:AC withstand voltage [V]
Electrolytic Capacitors
47/50[Example]:Capacitance value [µF]/withstand voltage[V]
No indication
:Ceramic capacitor
:B2 (12V)
AV-T2922
/AR
FRONT CONTROL PWB PATTERN
AV-T2922
FRONT
31
IC701
D702
S701S702S703S704S705
C701
D701
C702
L701
-1
Group No.
UL MARK
CKF1269-
S901
PW
12
NOZAKI
00.01.28
1
LIVE
2
P
2-12
MENU CH - CH + VOL - VOL +
R712
R706
R703
R702
Q701
BE
R710
R713
R705
R709
R711
R707
EB
R704
Q702
R701
R708
61
No.51917
ISOLATED
N
VP0203
DP6060
Mar. 2002 No. 51917
AV-T2922
CONTENTS
AV-T2922
CRT SOCKET PWB PATTERN
SEMICONDUCTOR SHAPES
BLOCK DIAG RAM
CIRCUIT DIAGRAMS
MAIN & FRONT CONTROL PWB CIRCUIT DIAGRAM
MAIN & CRT SOCKET PWB CIRCUIT DIAGRAM
P ATTERN DIAGRAMS
MAIN PWB PATTERN
CRT SOCKET PWB PATTERN
FRONT CONTROL PWB PATTERN
SEMICONDUCTOR SHAPES
TRANSISTOR
BOTTOM VIE W
E
C
B
ECB
IC
B O TT OM VI EW F R O NT VIEW TO P VI EW
BCE
(G)(D)(S)
FRONT VIEW
ECB
ECB
TO P VI EW
CHIP TR
C
BE
2-2
2-3
2-5
2-7
2-9
2-11
2-12
R367
R358
W412
C342
D341
5
C357
R352
C355
1
C3
R342
MARK
W049
SCREEN
T
R357
C354
R354
R366
52
R355
R341
E
Q341
R343
TP-R
C382
GK
B
G2
G1
C
Q352
Q342
RK
TOP
R361
HE
R364
R353
C353
H
R359
R368
BK
C356
R356
B
C
E
Q353
R362
R365
L381
Y003
E
4
C381
R381
U
MARK
1
E1
CHIP IC
OUT
E
IN
IN OUTE
1 N
1 N
W050
1
N
E
C
C351
Q351
R351
B
R360
Y001
Y002
R363
SK351
TP-E
UL MARK
CKF0866-
Group No.
/2!
-1
TOP VIEW
N
N
N
1
N
1
N
TP-E
2-2
No.51917No.51917
2-11
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