Sony KV-XF25N90 Service Manual ▷ View online
– 37 –
KV-XF25N90
RM-914
SUB HUE ADJUSTMENT
1. Select Video 1.
2. Input a NTSC color-bar, video into Video 1.
3. Set the following condition:
PICTURE 100%, BRIGHTNESS 50%, COLOR 50%
4. Connect an oscilloscope to pin 1 (B OUT) of CN305, A board.
5. Select SAJ 1 ‘SHU’ with 1 and 4 of the commander by set-
ting to Service Mode and adjust to VB1=VB2=VB3=VB4 with
3 and 6.
3 and 6.
4-3. PICTURE QUALITY ADJUSTMENTS
SUB COLOR ADJUSTMENT
1. Input a PAL color-bar.
2. Set to the following condition:
PICTURE 100%, BRIGHTNESS 50%, COLOR 50%
3. Connect an oscilloscope to pin 1 (B OUT) of CN305, A board.
4. Set to Service Mode and select SAJ 3 ‘SCL’ with 1 and 4 of
the commander then adjust to VB2=VB3=VB4 with 3 and
6.
6.
5. Press
[MUTING]
→ - of the commander to write the data.
6. Adjust SAJ 3 ‘SCL’ as step 2 to 5 when receiving NTSC color-
bar.
VB1 VB2
VB3 VB4
VB2 = VB3 = VB4
6. Press
[MUTING]
→ - of the commander to write the data.
VB1 VB2
VB3 VB4
VB1 = VB2 = VB3 = VB4
BELL FILTER ADJUSTMENT
1. Input SECAM color-bar signal.
2. Connect the dual-trace oscilloscope to the pin 9 (R-Y) of
CN303 (not mounted).
3. Adjust SERVICE MODE, ITEMS ‘SBF’ as shown below.
4-4. A BOARD ADJUSTMENT AFTER IC003
(MEMORY) REPLACEMENT
When replacing IC003 (MEMORY), be sure to change IC001 (µ-
COM) to the following new IC at the same time.
IC001(µ-CON) : CXP86461-617S
1. Enter to Service Mode.
2. Press commander buttons 5 and - (Data Initialize), and 2
and - (Data Copy) to initialize the data.
3. Call each item number and check if the respective screen shows
the normal picture.
In cases where items are not well adjusted, rectify the items
with fine adjustment.
Write the data per each item number (
[MUTING]
+-).
4. Select item numbers “OPB0” (OP1), “OPB1” (OP2) and
“OPB2” (OP3) and respectively set the bit per model with
command buttons 3 and 6.
5. Press commander buttons 8 and - (Test Normal) to return
to the data that was set on the shipment from the factory.
(This will also cancel Service Mode.)
– 38 –
KV-XF25N90
RM-914
4-5. PICTURE DISTORTION ADJUSTMENT (1)
Item Number 00 – 0B
GEO 0
HSH (H POSITION)
GEO 1
HSZ (H SIZE)
GEO 2
PAP (PIN AMP)
GEO 5
VSZ (V SIZE)
GEO 7
VLN (V LINEARITY)
GEO 4
VSH (V POSITION)
GEO 6
SCR (VERTICAL S-Correction)
GEO 8
VBOW (AFC.BOW)
GEO 9
AGL (AFC.ANGLE)
GEO 3
TILT (TRAPEZIUM)
GEO 0A UCP (UPPER CORNER PIN)
GEO 0B LCP (LOWER CORNER PIN)
PICTURE DISTORTION ADJUSTMENT (2)
H-TRAPEZOID (Rotate RV1801)
SECTION 5
DIAGRAM
5-1. BLOCK DIAGRAM
–
42
–
–
43
–
–
41
–
COMB FILTER
(Glass Combs)
(Glass Combs)
YC JUNGLE
IC301
CXA2130S
CXA2130S
<slave:88H>
MONITOR
OUT
OUT
TV V in
47
TV L in
48
TV R in
L1 out
Mon out
CV/Y in
C in
CV/Y out
43
45
4
6
9
7
2
C1 out
CN1307,CN101
CN1307,CN101
CN304
COMB Y in
COMB C in
V1 out
R1 out
46
39
38
V1 V in
1
V1 L in
2
V1 R in
4
V1 Y in
3
V1 C in
5
V2 V in
7
V2 L in
8
V2 R in
10
V out 2
29
L out 2
28
R out 2
26
VIDEO IN 1
VIDEO IN 2
B3
TRU Surround
IC3201
NJM2187L
NJM2187L
AV SW
IC1401
CXA1855S
CXA1855S
<slave: 90H>
BBE
IC3206
NJM2150D
NJM2150D
DAC IC3205
CXA1315P
<slave:48H>
AUDIO PROCESSOR
IC3207 TDA7315D
<slave:80H>
DBFB
IC3202
AUDIO OUT
IC6200
TA8200AH
TA8200AH
RED OUT
GREEN OUT
BLUE OUT
STV5112
IC701
IC701
N/S DRIVE
IC1800
IC1800
H3
C
VM1
SP ASSY
R out
CRT SOCKET
G out
CRT
A60LPN70X
A60LPN70X
NECK ASSY
DY
Y25RSA
Y25RSA
B out
R out
V out
U out
Y out
V in
U in
Y in
VM out
G out
B out
22
23
24
21
19
18
11
13
14
IK in
H. DRIVE
H. PULSE
E/W
VD+
VD-
VM DRIVE
Q5902/5906
Q5902/5906
H-OUT
Q511
2SC4927
Q511
2SC4927
V-OUT
IC503
TDA8172
IC503
TDA8172
HDT
T501
T501
H-DRIVE
Q506
2SC2688
Q506
2SC2688
PIN-CONT
IC502
NJM2903M
IC502
NJM2903M
PIN-OUT
Q505
IRF614
Q505
IRF614
PMT
T505
T505
HLT
T504
T504
FBT
T503
NX-4009
T503
NX-4009
+B
Audio Front Vcc
*+audio 3D Vcc
*-audio 3D Vcc
* Not used for
these models
these models
11V
7V
+5V
5V REG & RESET
IC002 MM1319AF
9V REC IC603
5V REC IC604
STB TRANS
T604
SRT
T603
Additional
Color Matrix
Color Matrix
SYSTEM
Ucom
IC001
CXP86461
CXP86461
RECEIVER
SBX1981-11
IC3901
IC3901
H3
A
B2
SIRCS
HALF
R G B
BLK
I2L
MEMORY
IC003
ST24C08FB6
ST24C08FB6
32 31 30
37 39 40
15
28 29 30 31
F
STB SW TR
Q605
2SK2845
2SK2845
POWER
IC601
STR-F6656
STR-F6656
LINE FILTER
T601
LINE
FILTER
FILTER
T4601
T4602
T4602
THP
THP600
AC CORD
DGC
MAIN. TUVIF
TU101
BTF-WG411
BTF-WG411
<slave: C0H>
V1 S1 in
6
JACK BLOCK
J1402
PIN 9P
PIN 9P
+9V
KV-XF25N90
RM-914
KV-XF25N90
RM-914
KV-XF25N90
RM-914
–
75
–
KV-XF25N90
RM-914
SECTION 6
EXPLODED VIEWS
•
Items marked "
∗
" are not stocked since
they are seldom required for routine
service. Some delay should be
anticipated when ordering these items.
service. Some delay should be
anticipated when ordering these items.
The components identified by
shading and mark
shading and mark
!
are critical
for safety.
Replace only with part number
specified.
Replace only with part number
specified.
NOTE:
•
Items with no part number and no
description are not stocked because
they are seldom required for routine
service.
description are not stocked because
they are seldom required for routine
service.
•
The construction parts of an assembled
part are indicated with a collation
number in the remark column.
part are indicated with a collation
number in the remark column.
1
4-302-404-03
SCREW (WASHER HEAD) (+P 4X16)
2
1-529-190-11
SPEAKER (5CM)
3
! 4-065-571-01
COVER, REAR
4
1-503-902-11
SPEAKER (15 x 6.5CM)
5
4-046-981-01
BRACKET, SPEAKER
6
4-374-745-21
CUSHION (A)
REF. NO. PART NO.
DESCRIPTION
REMARK
3
2
2
1
4
6
5
4
1
5
6
6-1. SPEAKER BRACKET
r
: 7-685-648-71
SCREW +BVTP 3
×
12
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