Circuit Board Location; Printed Wiring Boards And Schematic Diagrams; A Board; Ux (Main) Board - Sony KV-32FV16 Service Manual

5-2. CIRCUIT BOARD LOCATIONS

HX Board

C Board
HB
Board
HA
Board

G Board

(KV-32FV16/32FV26 ONLY)

GA Board

AK Board

(KV-34FV16/34FV16C/
34FX260/34FX260C ONLY)
T Board
(KV-32FV26/34FX260/
34FX260C ONLY)

A Board

UX Board
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.
Part Replaced ( ) Adjustment ( )
R387, R550, R529, R530, R531,
HV HOLD-DOWN
R532, R533, D519, D520, D521,
R530, R531
IC501, C531, C532, T503, IC351,
IC355, D302, Q301, R356, R359,
R361, ............................... A Board
IC643, R661 ................... G Board
IC6003, R6008 ............. GA Board

WA Board

• 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:
The components identified by shading and
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
une fusible a action rapide. Doit etre remplacee par une
fusible de meme yaleur, comme marque.
— 33 —
A BOARD IC BLOCK DIAGRAMS
A BOARD: IC355 CXA2131CS
45 47
FSC
<FSC SW>
APC
C VCO
<HUE>
CHROMA
ACC DET.
AMP
BPF
<C BPF>
ACC AMP
CHROMA
CHROMA SW
TV/C2 IN 43
ATT
C1 IN 2
Y SW Y
CVBS2/Y2 IN 41
CVBS1/Y1 IN 4
V SYNC SEP
<VSS>
COMB-C IN 7 MONITOR SW
H SYNC SEP
COMB-Y IN 9 VIDEO SW
<HSS>
<H MASK>
<VIDEO SEL>
MON OUT 6
<S SEL>
mark
NON-INVERTING
indique
KV-32FV16/32FV26/34FV16/34FV16C/34FX260/34FX260C
46 44 40 8 1 15 39 38 37 36 28
EYUV CLAMP
YUV SW
<YSEL>
YUVOUT
<YUVOUT>
DEMOD.
DPIC
CLAMP
<DPIC> COLOR AMP
RGB 1/2
<AGING> <COLOR>
<AGING2> <C OFF>
AXIS
<AXIS NTSC>
COLOR KILLER
<AXIS PAL>
<<KILLER ID OFF>>
CLAMP
Y/C MIX
DC TRAN
RGB CLAMP
FILTER ALIGNMENT <DC TRAN>
CAL. by fsc
VPROT
<<VGN>>
VM AMP
<VM LEV>
(OFF YS/YM)
SHARPNESS DL
SHARPNESS AMP
TRAP + EQ
<SHARPNESS>
<TRAP OFF>
<SHP F0>
<PRE/OVER>
WIDE SAW FUNC.
<ASPECT>
<SCROLL>
<UPPER VLIN>
<LOWER VLIN>
COUNTDOWN LINE COUNTER
<V ZOOM>
<CD MODE> V TIM GEN.
<JUMP SW>
VSAW GEN
<INTERLACE> <JUMP SW>
VTIM
<REF P>
<VBLKW>
PHASE DET.
AFC
H TIM GEN. <H POSITION> HD GEN.
<AFC GAIN> HSAW GEN.
<H BLK> <AFC BOW>
<FH HIGH> <HOSC>
<LEFT HBLK> <AFC ANGLE>
<<HLOCK>> (ZAP)
<RIGHT HBLK> HPROT <HD W>
<<HCENT>>
<<HNG>>
20 17 5 18 19
A BOARD: IC561 STV9379
OUTPUT
SUPPLY STAGE FLYBACK
VOLTAGE SUPPLY GENERATOR
2 6 3
FLYBACK
GENERATOR
INVERTING
1
INPUT
POWER
5 OUTPUT
AMPLIFIER
7
INPUT
THERMAL
PROTECTION
4
GND
— 34 —
27 26 25 32 31 30 29
42 ABL FIL
3 ABL IN
ABL/PEAK LIM
AKB
<ABL MODE>
21 IK IN
<<IKR>>
<ABL VTH>
24 B OUT
23 G OUT
22
R OUT
2
I C BUS
DAC
DECODER 35 SDA
SW
STATUS I/F
34 SCL
14
VD SAW FUNC. VD-
<VON> <S CORRECTION>
<V SIZE> <V LINEARITY>
<V POSITION> <EHT COMP>
13 VD+
EW PARABOLA FUNC.
<H SIZE> <TRAPEZIUM>
11 EW
<PIN AMP> <EW DC>
<UPPER CPIN> <LOWER CPIN>
IREF REG
10 12 16 33