KV-32FV16/32FV26/34FV16/34FV16C/34FX260/34FX260C
5-3. PRINTED WIRING BOARDS AND
SCHEMATIC DIAGRAMS
• All capacitors are in mF unless otherwise noted.
pF: mmF 50 WV or less are not indicated except for
electrolytic and tantalums.
• All electrolytics are 50V unless otherwise specified.
• Indication of resistance, which does not have one for
rating electrical power, is as follows:
Pitch: 5mm
Rating electrical power 1/4W (CHIP: 1/10W)
• All resistors are in ohms.
KW = 1000W MW = 1000KW
•
: nonflammable resistor
•
: fusible resistor
•
: internal component
•
: panel designation and adjustment for repair
•
: earth-ground
•
: earth-chassis
• All variable and adjustable resistors have characteristic
curve B, unless otherwise noted.
• The components identified by
in this manual have been
carefully factory-selected for each set in order to satisfy
regulations regarding X-ray radiation. Should replacement
be required, replace only with the value originally used.
• When replacing components identified by
, make the
necessary adjustments indicated. If results do not meet
the specified value, change the component identified
by
and repeat the adjustment until the specified value
is achieved (refer to Safety Related Adjustments on
page 14).
• When replacing parts shown in the table below, be sure to
perform the related adjustments.
5-2. CIRCUIT BOARD LOCATIONS
• All voltages are in Volts
• Voltage is DC with respect to ground unless otherwise noted.
• Readings are taken with a 10MW digital multimeter.
• Readings are taken with a color-bar signal input.
• Voltage variations may be noted due to normal production
tolerance.
• Circled numbers are waveform references.
• * :
cannot be measured
•
:
B + Line
• -----
:
B - Line
•
:
Signal path
Reference Information
RESISTOR
:
RN
METAL FILM
:
RC
SOLID
:
FPRD
NON FLAMMABLE CARBON
:
FUSE
NON FLAMMABLE FUSIBLE
:
RW
NON FLAMMABLE WIREWOUND
:
RS
NON FLAMMABLE METAL OXIDE
:
RB
NON FLAMMABLE CEMENT
:
ADJUSTMENT RESISTOR
COIL
:
LF-8L
MICRO INDUCTOR
CAPACITOR
:
TA
TANTALUM
:
PS
STYROL
:
PP
POLYPROPYLENE
:
PT
MYLAR
:
MPS
METALIZED POLYESTER
:
MPP
METALIZED POLYPROPYLENE
:
ALB
BIPOLAR
:
ALT
HIGH TEMPERATURE
:
ALR
HIGH RIPPLE
Note:
— 34 —
— 33 —
A BOARD IC BLOCK DIAGRAMS
A BOARD: IC355 CXA2131CS
CHROMA SW
Y SW
MONITOR SW
VIDEO SW
<VIDEO SEL>
<S SEL>
43
6
2
4
7
9
41
TV/C2 IN
MON OUT
COMB-C IN
CVBS1/Y1 IN
CVBS2/Y2 IN
C1 IN
COMB-Y IN
ACC DET.
ACC AMP
CHROMA
ATT
V SYNC SEP
<VSS>
H SYNC SEP
<HSS>
<H MASK>
SHARPNESS DL
SHARPNESS AMP
<SHARPNESS>
<SHP F0>
<PRE/OVER>
FILTER ALIGNMENT
CAL. by fsc
COUNTDOWN
<CD MODE>
<INTERLACE>
LINE COUNTER
V TIM GEN.
<JUMP SW>
<REF P>
<VBLKW>
VSAW GEN
VTIM
AFC
<AFC GAIN>
<FH HIGH>
<<HLOCK>>
<<HCENT>>
HSAW GEN.
<HOSC>
(ZAP)
H TIM GEN.
<H BLK>
<LEFT HBLK>
<RIGHT HBLK>
PHASE DET.
<H POSITION>
<AFC BOW>
<AFC ANGLE>
HPROT
<<HNG>>
HD GEN.
<HD W>
IREF REG
20
AFC FIL
17
SCP
33
VCC1
16
REG
12
1 REF
10
GND1
19
HD
18
HP/PR
O
TECT
5
V TIM
WIDE SAW FUNC.
<ASPECT>
<SCROLL>
<UPPER VLIN>
<LOWER VLIN>
<V ZOOM>
<JUMP SW>
VD SAW FUNC.
<VON>
<V SIZE>
<V POSITION>
<S CORRECTION>
<V LINEARITY>
<EHT COMP>
DAC
SW
VPROT
<<VGN>>
VM AMP
<VM LEV>
(OFF YS/YM)
I
C BUS
DECODER
STATUS I/F
2
CLAMP
DC TRAN
<DC TRAN>
DPIC
<DPIC>
<AGING>
<AGING2>
COLOR KILLER
<<KILLER ID OFF>>
CHROMA
AMP
TRAP + EQ
<TRAP OFF>
BPF
<C BPF>
APC
<HUE>
C VCO
DEMOD.
FSC
<FSC SW>
Y/C MIX
RGB CLAMP
COLOR AMP
<COLOR>
<C OFF>
AXIS
<AXIS NTSC>
<AXIS PAL>
CLAMP
RGB 1/2
ABL/PEAK LIM
<ABL MODE>
<ABL VTH>
AKB
<<IKR>>
EW PARABOLA FUNC.
<H SIZE>
<PIN AMP>
<UPPER CPIN>
<TRAPEZIUM>
<EW DC>
<LOWER CPIN>
Y
EYUV CLAMP
YUV SW
<YSEL>
YUVOUT
<YUVOUT>
42
ABL FIL
3
ABL IN
21
IK IN
24
B OUT
23
G OUT
22
R OUT
35
SDA
34
SCL
14
VD-
13
VD+
11
EW
29
30
31
32
25
26
27
28
36
37
38
39
15
1
8
40
44
46
47
45
YS2/YM
B2 IN (B-Y
OUT)
G2 IN (R-Y
OUT)
R2 IN (Y
OUT)
YS1
B1 IN
G1 IN
R1 IN
YUV SW
EY IN
ER-Y IN
EB-Y IN
VM OUT/
V PR
O
T
YS1 SW
<RGB SEL>
YM SW
YS2 SW
D
YNAMIC COLOR
<D
YNAMIC C>
PICTURE AMP
<PICTURE>
GAMMA AMP
<GAMMA>
CLAMP
BRIGHT CONT
<BRIGHT>
DRIVE AMP
<R/G/B DRIVE>
CUT
OFF CONT
.
<R/G/B CUT
OFF>
R/G/B BLK
<PON>
<R/G/B ON>
APED
Y CLAMP
GND2
Vcc2
FSCOUT
Xtal
APC FIL
A BOARD: IC561 STV9379
1
2
3
4
5
6
7
SUPPLY
VOLTAGE
OUTPUT
STAGE
SUPPLY
FLYBACK
GENERATOR
FLYBACK
GENERATOR
POWER
AMPLIFIER
THERMAL
PROTECTION
OUTPUT
INVERTING
INPUT
NON-INVERTING
INPUT
GND
The components identified by shading and
mark
are critical for safety. Replace only with the part number
specified. The symbol
(displayed on component side
of the circuit board) indicates fast operating fuse. Replace
only with fuse of the same rating as marked.
Les composants identifiés per un tramé et une marque
sont critiques pour la sécurité. Ne les remplacer que par une
piéce portant le numéro spécifié. Le symbole
indique
une fusible a action rapide. Doit etre remplacee par une
fusible de meme yaleur, comme marque.
A Board
C Board
WA Board
UX Board
T Board
(KV-32FV26/34FX260/
34FX260C ONLY)
G Board
(KV-32FV16/32FV26 ONLY)
GA Board
(KV-34FV16/34FV16C/
34FX260/34FX260C ONLY)
HX Board
HB
Board
HA
Board
AK Board
Part Replaced ( )
Adjustment ( )
R387, R550, R529, R530, R531,
R532, R533, D519, D520, D521,
IC501, C531, C532, T503, IC351,
IC355, D302, Q301, R356, R359,
R361, ............................... A Board
IC643, R661 ................... G Board
IC6003, R6008 ............. GA Board
HV HOLD-DOWN
R530, R531
