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SCHEMATIC DIAGRAMS
COLOUR TELEVISION
7
2006
YA442
AV-2186ME, AV-21MS16/H,
AV-21MS26, AV-21MX16/G,
AV-21MX16/S, AV-21MX56/S,
AV-21MX76/G
CD-ROM No.SML200607 BASIC CHASSIS
CW3
COPYRIGHT © 2006 Victor Company of Japan, Limited No.YA442
2006/7
AV-2186ME, AV-21MS16/H, AV-21MS26, AV-21MX16/G,
AV-21MX16/S, AV-21MX56/S, AV-21MX76/G
STANDARD CIRCUIT DIAGRAM
NOTE ON USING CIRCUIT DIAGRAMS
1.SAFETY Type
The components identified by the symbol and shading are No indication : Ceramic capacitor
critical for safety. For continued safety replace safety ciritical MM : Metalized mylar capacitor
components only with manufactures recommended parts. PP : Polypropylene capacitor
MPP : Metalized polypropylene capacitor
MF : Metalized film capacitor
2.SPECIFIED VOLTAGE AND WAVEFORM VALUES
TF : Thin film capacitor
The voltage and waveform values have been measured under the BP : Bipolar electrolytic capacitor
following conditions. TAN : Tantalum capacitor
(1)Input signal : Colour bar signal (3)Coils
(2)Setting positions of No unit : [µH]
each knob/button and Others : As specified
variable resistor : Original setting position
(4)Power Supply
when shipped
(3)Internal resistance of tester : DC 20k/V : B1 : B2 (12V)
(4)Oscilloscope sweeping time :H 20µs / div
: 9V : 5V
:V 5ms / div
Respective voltage values are indicated
: Othters Sweeping time is
specified (5)Test point
(5)Voltage values : All DC voltage values : Test point : Only test point display
Since the voltage values of signal circuit vary to some extent
according to adjustments, use them as reference values. (6)Connecting method
: Connector : Wrapping or soldering
3.INDICATION OF PARTS SYMBOL [EXAMPLE]
In the PW board : R209 R209 : Receptacle
(7)Ground symbol
4.INDICATIONS ON THE CIRCUIT DIAGRAM
(1)Resistors : LIVE side ground
Resistance value : ISOLATED(NEUTRAL) side ground
No unit : [] : EARTH ground
K : [k] : DIGITAL ground
M : [M]
5.NOTE FOR REPAIRING SERVICE
Rated allowable power
This model's power circuit is partly different in the GND. The
No indication : 1/16 [W]
difference of the GND is shown by the LIVE : ( ) side GND and the
Others : As specified ISOLATED(NEUTRAL) : ( ) side GND. Therefore, care must be
Type taken for the following points.
No indication : Carbon resistor (1)Do not touch the LIVE side GND or the LIVE side GND and the
OMR : Oxide metal film resistor ISOLATED(NEUTRAL) side GND simultaneously. if the above
MFR : Metal film resistor caution is not respected, an electric shock may be caused.
Therefore, make sure that the power cord is surely removed from
MPR : Metal plate resistor the receptacle when, for example, the chassis is pulled out.
UNFR : Uninflammable resistor
(2)Do not short between the LIVE side GND and ISOLATED(NEUTRAL)
FR : Fusible resistor side GND or never measure with a measuring apparatus measure
Composition resistor 1/2 [W] is specified as 1/2S or Comp. with a measuring apparatus ( oscilloscope, etc.) the LIVE side GND
(2)Capacitors and ISOLATED(NEUTRAL) side GND at the same time.
If the above precaution is not respected, a fuse or any parts will be broken.
Capacitance value
1 or higher : [pF] Since the circuit diagram is a standard one, the circuit and
circuit constants may be subject to change for improvement
less than 1 : [µF] without any notice.
Withstand voltage
No indication : DC50[V] NOTE
Due improvement in performance, some part numbers show
Others : DC withstand voltage [V]
in the circuit diagram may not agree with those indicated in
AC indicated : AC withstand voltage [V] the part list.
Electrolytic Capacitors When ordering parts, please use the numbers that appear
47/50[Example]: Capacitance value [µF]/withstand voltage[V] in the Parts List. (No.YA442)2-1
CONTENTS
SEMICONDUCTOR SHAPES ......................................................................2-2
BLOCK DIAGRAM
[AV-21MS16/H, AV-21MS26, AV-21MX16/G, AV-21MX16/S] ....................................................................... 2-3
[AV-2186ME, AV-21MX56/S,AV-21MX76/G] ................................................................................................ 2-5
CIRCUIT DIAGRAMS
MAIN PWB CIRCUIT DIAGRAM [AV-2186ME, AV-21MX56/S, AV-21MX76/G] (1/4), (2/4) .......................... 2-7
MAIN PWB CIRCUIT DIAGRAM [AV-2186ME, AV-21MX56/S, AV-21MX76/G] (3/4), (4/4) .......................... 2-9
MAIN PWB CIRCUIT DIAGRAM [AV-21MS16/H, AV-21MS26] (1/4), (2/4) ................................................. 2-11
MAIN PWB CIRCUIT DIAGRAM [AV-21MS16/H, AV-21MS26] (3/4), (4/4) ................................................ 2-13
MAIN PWB CIRCUIT DIAGRAM [AV-21MX16/G, AV-21MX16/S] (1/4), (2/4) ............................................. 2-15
MAIN PWB CIRCUIT DIAGRAM [AV-21MX16/G, AV-21MX16/S] (3/4), (4/4) ............................................. 2-17
BASS PWB CIRCUIT DIAGRAM .............................................................................................................. 2-19
PATTERN DIAGRAMS
MAIN PWB PATTERN .............................................................................................................................. 2-21
BASS PWB PATTERN ............................................................................................................................. 2-23
VOLTAGE CHATRS................................................................................... 2-25
WAVEFORMS ............................................................................................ 2-26
USING P.W. BOARD
P.W.B ASS'Y name AV-2186ME AV-21MX56/S AV-21MX76/G AV-21MS16/H
MAIN P.W. BOARD SCW-1901A-H2 SCW-1911A-H2 SCW-1908A-H2 SCW-1903A-H2
BASS P.W. BOARD SCW-6001A-H2
P.W.B ASS'Y name AV-21MS26 AV-21MX16/G AV-21MX16/S
MAIN P.W. BOARD SCW-1902A-H2 SCW-1910A-H2 SCW-1912A-H2
BASS P.W. BOARD SCW-6001A-H2
SEMICONDUCTOR SHAPES
TRANSISTOR
BOTTOM VIEW FRONT VIEW TOP VIEW
CHIP TR
C
E
C
B B C E
E C B E C B B E
(G) (D) (S) E C B
IC
BOTTOM VIEW FRONT VIEW TOP VIEW
1 N
OUT
E
IN 1 N
IN E OUT 1 N
CHIP IC
TOP VIEW
1
N
N
1
2-2(No.YA442)
BLOCK DIAGRAMS
[AV-2186ME, AV-21MX56/S,AV-21MX76/G]
MAIN PWB R
G IC351
IC701 MAIN MICRO COMPUTER/TELETEXT DECODE/IF.VIDEO.RGB.SYNC.DEF. PROCESS V01
B RGB OUT
108,109 SCL1, SDA1 MAIN PWB
SCL
IC702 127,128 SCL0, SDA0 I2C (CRT SOCKET)
MAIN MEMORY BUS MICRO TELETEXT DECODER
SDA COMPUTER DIGITAL SIGNAL PROCESS
TU001
98,99 PW_LED
TUNER IF I/O R G B
97 REMOTE PORT
119 KEY_IN
122 S_V_DET PEAKING SCAN ROUT 85
VELOCITY MOD. 86
GOUT
U/V DELAY
BOUT 87
SF101 29, 30 SIF IN SKIN TONE
SAW FILTER SIF DETECT U/V TINT OSD/TEXT
SATURATION INSERT
SF102 24, 25 VIF IN VIF DETECT/AGC/AFT PIP_SEL 75
SAW FILTER SOUND TRAP IC301
PIP CONTROL
79 G3/Y 36, 37
B3/PB I2C
80
J801 S_V_DET PIP_RIN 70
78 R3/PR 9 R
Y1 55 V2/Y VIDEO PIP_GIN 72 8 G D-A RGB
S-VIDEO B-Y R-Y R G B CONVERT MATRIX
C1 SELECT PIP_BIN 71 7 B
VIDEO-1 VIDEO C COLOUR
CVBS1 58 Y1/CVBS BASE-BAND
IDENT. DEMOD RGB MATRIX
S-VIDEO V DELAY LINE
59 C1 & OVER
INPUT L1 GAMMA SAMPLE
L Y 6 SEL
R1
R DRAM
51 V3 VDRA+, VDRB- 22, 23 41 VSP
V. DRIVE SYNC
J802 42 HSP PROC. H/V
V2/Y
Y SYNC SCALER
49 L1
PB SEP.
VIDEO-2 PB 50 R1 COMB FILTER
Y DELAY ADJ. HOUT 67
PR H. DRIVE COLOUR J809
COMPONENT PR DEC.
VIDEO J803 HEADPHONE
L2 56 L2
INPUT L CVBSO/PIP(PIP_OUT) 64 20 CVBS2
A-D
R2 57 R2
R AUDIO CONVERT SPEAKER L
SELECT
34 L3
35 R3 A_L 60
AUDIO 3 14 9 13 L_AOUT
AUDIO CONTROL
J804 SELECT
A_R 61 IC671 IC601
V-OUT 48 V_OUT
VIDEO BASS AMP 3 AUDIO AMP 23 R_AOUT
2 13
L-OUT 36 L_OUT
OUTPUT L
R-OUT 37 R_OUT
R
IC971 SPEAKER R
3.3V
3.3V REG
1, 7 IC401 5
Q983 V. OUT V
MAIN PWB Q984 1.8V
(FRONT LED) 1.8V REG DY01
J806 Q522
V3
Q981
DEF YOKE
VIDEO H. OUT H
VIDEO-3 J807 Q982 1.8V
L3 1.8V REG (V1.8A)
INPUT AUDIO-L
(FRONT) J808 R3 REMOCON POWER
AUDIO-R RECEIVER LED IC972
3.3V_STB
D901 3.3V REG
RECT
T921 IC975
SW 5V
VOL+ VOL- CH+ CH- MENU 5V REG
TRANSF.
8V
IC973 FOCUS
12V
12V REG
32V T522
B1
S901 SCREEN
L951 FBT
F901
AC IN
IC921 PC901 IC951 EHV
POWER SW
POWER VOLTAGE ERROR
REG FEEDBACK AMP
(No.YA442)2-3 2-4(No.YA442)
[AV-21MS16/H, AV-21MS26, AV-21MX16/G, AV-21MX16/S]
MAIN PWB
IC701 MAIN MICRO COMPUTER/
IF VIDEO RGB SYNC DEF. PROCESS
R
108,109 G IC351
SCL1, SDA1 V01
B RGB OUT
IC702 127,128 SCL0, SDA0 I2C
SCL MICRO
MAIN MEMORY BUS
SDA COMPUTER DIGITAL SIGNAL PROCESS
TU001
98,99 LED
TUNER IF I/O R G B
97 REMOTE PORT
119 KEY_IN CRT SOCKET
122 SV_DET PEAKING SCAN
VELOCITY MOD.
ROUT 85 PWB
GOUT 86
U/V DELAY
29, 30 SIF IN BOUT 87
SF101
SAW FILTER SIF DETECT SKIN TONE
U/V TINT OSD
SATURATION SELECT
SF102 24, 25 VIF IN VIF DETECT/AGC/AFT
SAW FILTER SOUND TRAP
79 Y
80 PB
J801 SW1 78 PR
Y1 55 V2 VIDEO
S-VIDEO B-Y R-Y R G B
C1 SELECT
VIDEO-1 VIDEO C COLOUR
CVBS1 58 Y/V1 BASE-BAND
S_VIDEO IDENT. RGB MATRIX
V DEMOD
DELAY LINE
INPUT 59 C1 &
L1 GAMMA
L Y
R1
R
51 V3 VDA,VDB 22, 23
V. DRIVE J801
J802
V2/Y HEADPHONE
Y SYNC
49 L1
PB SEP.
VIDEO-2 CB 50 R1 COMB FILTER
PR Y DELAY ADJ. HOUT 67
COMPONENT H. DRIVE
CR
VIDEO
J803 L2 56 L2
INPUT L SPEAKER L
R2 57 R2
R AUDIO
SELECT
34 L3
A_L 60 3 14 9 13
35 R3
AUDIO IC671 IC601
AUDIO CONTROL
A_R 61 2
BASS AMP
13 3 AUDIO AMP 23
J804 V-OUT 48 SELECT
VOUT
VIDEO
L-OUT 36 LOUT
OUTPUT L
R-OUT 37 ROUT SPEAKER R
R
Q983
Q984 1.8V
1.8V REG 1 IC401 5
V. OUT V
Q981
Q982 DY01
MAIN PWB V1.8V
1.8V REG (V1.8A) Q522 DEF YOKE
J806 (FRONT LED) H
V3 H. OUT
VIDEO
VIDEO-3 J807 L3
INPUT AUDIO-L
(FRONT) J808 R3 REMOCON POWER
IC972
3.3V_STB
AUDIO-R D901 3.3V REG
RECEIVER LED
RECT
T921 IC975
SW 5V
5V REG
TRANSF.
TV/VIDEO VOL+ VOL- CH+ CH- MENU 8V
IC973 FOCUS
12V
12V REG
32V T522
B1
S901 SCREEN
L951 FBT
F901
AC IN
IC921 PC901 IC951 EHV
POWER SW
POWER VOLTAGE ERROR
REG FEEDBACK AMP
(No.YA442)2-5 2-6(No.YA442)
CIRCUIT DIAGRAMS
MAIN PWB CIRCUIT DIAGRAM [AV-2186ME, AV-21MX56/S, AV-21MX76/G] (1/4), (2/4) SHEET1 MAIN PWB (4/4) SHEET2
MAIN PWB ASS'Y (2/4) [FRONT LED] (CRT SOCKET)
SCW-1901A-H2 [AV-2186ME], SCW-1911A-H2 [AV-21MX56/S], CN10T
CN00C
QGA2501F1-06
SCW-1908A-H2 [AV-21MX76/G] CN00T
QJL001-064431-E
VIDEO-3
IC302
IC801
GP1UE281QKVF
POWER INPUT
S9648