
MISCELLANEOUS ADJUSTMENTS
PRETUNING
NOTE: AIl procedures require an antenna connected and power applied to the
receiver.
HIGHVOLTAGECHECK
Tune in a picture. Set brightness, contrast, and color to minimum. Connect a
high voltage probe to the CRT anode. High voltage should measure 25.5kV to
27.5kV.
~utoProgram
1. Press the menu bulton to select setup menu and highlight
autoprogram.
2. Press the + bulton. AIl available channels are scanned and stored in
memory.
~hannelMemory
1. Press the menu bulton to select Ihe setup menu.
2. Press channel down bulton to highlight channel memory.
3. Select channel to add or delete with number bultons.
4. Press + to add a channel or -to erase a channel.
COLORTEMPERATURE
NOTE: See Service Adjustment Parameters to change drive and bias values.
Press menu bulton on the receiver for collapsed ras ter setup line. Disconnect
the antenna. Preset the red, green, and blue drive values to 32. Preset the red,
green, and blue bias values to provide 170V at the collector of the respective
output transistors. Adjust screen control for a service line that is just visible.
Adjust red, green, and blue drives to obtain a white line. Check the low light
to high light gray scale tracking. Repeat the procedure, if necessary, to obtain
the best performance.
5. Repeat steps 3 and 4 to add or erase other channels.
PURITYI CONVERGENCE
Yoke is bonded and part of the CRT. Adjustment is not recommended.
~ERVICEMENU
:he following adjustment and alignment procedures are accessed thru a service menu. To access the service menu, tum the receiver on, press the menu bulton and
loldit down while pressing Ihe power bulton. WhiJe holding down the menu bulton, release the power bulton and press the volume + button. The screen will display
loneline menu, on the left the parameter P 00, and on the right the value of that parameter VOO.Release bultons. Adjustments are made by selecting the proper
larameter and changing the value of that parameter. To change the parameter number use channe1 up and down buttons. To adjust the current value of Ihat parameter
Isevolume + and - bultons. The three main groups of parameters are, the service adjustment parameters. the chassis alignment parameters, and the tuner alignment
larameters. To access and change any of the adjustments, the proper parameter pass number and value must be entered. This information is listed at the beginning of
alignment. When these parameters are modified, the T-Chip and the corresponding EEPROM are updated. AIl service adjustments are bus controlled, except
lach
'ocusand screen. After adjustment, exit the service menu by pressing the power bulton.
'!wARNING: When adjusting the horizontal frequency be carerul not to exceed the value range, or the receiver will go into shutdown, and replacement or
~3101 may be required. Ir the receiver goes into shutdown, connect a capacitor across C4402 with the same value, redo horizontal frequency adjustment,
¡benremove the capacitor. It may be necessary to readjust the horizontal frequency again.
~ERVICEADJUSTMENTPARAMETERS
¡Parameter No.
00
01
02 Horizontal Phase
03 EWDC 00 - 15
04
05 Vertical DC 00 - 15
06 Vertical Size
07
08
09 Blue Bias 00 - 127
10
1I
12
Parameter Name
Pass number for service adjustment parameters.
Horizontal Frequency
EW Amplitude
Red Bias
Green Bias
Red Drive 00 - 63
Green Drive 00 - 63
Blue Drive
Value Range
Must set to 76
00 -63
00 - 15
00 - 07
00 - 31
00 - 127
00 -127
00 - 63
On-Set Value Comment
00
12
09
07 Used in 27".receivers.
03
08
17
46
59
71
24
24
21
May not advance until value is set.
Adjust for stable or slowly moving horizontallines.
Adjust to center picture left to right.
Used in 27" receivers.
Adjust to center picture top to bottom.
Adjust to 1/4" overscan top and boltom of screen.
Press menu bulton on the receiver for setup line.
Press menu button on the receiver for setup line.
Press menu bulton on the receiver for setup Jine.
Press menu bulton on the receiver for setup line.
Press menu button on the receiver for setup line.
Press menu bulton on the receiver for setup line.

POWER SUPPLYSCH
R4153
C4155
2.2¡.rF 27K
f
200\1 IW
. R41~2
, 510K
C4150¡
10¡¡F
I
20iN
..
R3J32
2200
C3303
R3J14 .001
2200
!
4
'7Ñ
DEGAUSS
PART01' SC4201
VDD
4.9V
20
5.OV
!
U3101 CONTROLMICRO
NC NC He
NC
371 91
OV OV
STBY DATA
SW OUT
VSS
21
He
12.OV(A)
ATE-ENABLE
--¡¡-
R3105
OV
101<
411Hz OUT
2.7V
4i
-
C3115
~~!
mrrl-,. 1000
411HzIN
2.5V
42
R3137
111
Y3101
811Hz
~~~..o~~
C3114.1 -
~~! C3107.1R3130
~~T 10K
5.4V f1
R3139
1000
I
:C3113
, .01
R3120
!
SEE Ulool
PIN 29
PACE 2A
-.1V
n..,,,,,, n..,,,,,
100 39K
R3129
470K
R3133.!R3132
IOOK~ 82K
Q3101RESET
R4166
10K
1.5V
C4157.1CR4157 CR4158
.001T
C4160.1 CR4160
.00IT
Q3102 RESET
6.5V A5:6V
C3122
22~~
12.1V
1 P.W d\IOV
R4169
6200
m
12.OV
CR4159
OV
1.8V 04151 PWlI INV
IOOO¡
,.
C4159
.001T
4701'f'
C4154!
-r-
1
.0_.
220'1
10¡¡a
R4174
10
F"B3101
~
L3102
r""+
F'B3103
~
VOLTACES TAKEN WITH SIGNAL
ADDmONAL SCHEIoIATIC
NOTES. SE[ PACE3
A PHOTOI'ACT STANDARD NOTATION SCHEIoIATJC
SET3867
WITH ."",...,,,,,,,,,,,,,"
O "Co.IH7
E
..
1 2
..
1211..9 8
T4102
8OTTOIIVIEW
CR3102
R3145
IOOK
C3~~~
.
5
5.OV
1',-
,
!
,
L-

Q41.50 REG
:l O
14153
. R4152 C4150
27K
'51OK 10¡4"
IW
R
. '" 200v
1CR4109
CR410J
L7812CV
1119.2VU4102 12V STBYREG
'2
14rN
C415J
JJ¡4"
200v
J
R4102
200
SOURCE
12.1V
SOURCE
7.5V
SOURCE
110'1
0-4151 PWIAINV
~2V
tlYJ~
159
5
/
'-
'.,,--
22rN
101'8
1
R4174
10
R410J
62
C4704
680pf'
CR4701
CR4104
5.6V
.!,
R4517
51
"'"
IW
R4111
1000
(1800)
E9 ES009
CI95~.L CI908.J.. JJO¡of'
.1¡ .IT
C4701
680¡of'
I C1909 SOURCE
~
..
5.OV
SOURCE
5.rN
SOURCE
200v
SOURCE
187V
SOURCE
~ JJ.OV(A}
SOURCÉ
~ JJ.OV(B}
SOURCÉ
25.rN
SOURCE
. 25.OV
IJ.2V
SOURCE
'!:N
1¡¡8
10
>-
7
9
.'
.. 12.rN
8
T
I
I
i
¡
',--
!
i
111V
101'8
IkV
R4101
820
C4129
loo~
(10¡4" 6JV)
R4106
8.2
f'B4111
L-
SOURCE
12.OV(A}
SOURCÉ
12.0V(B}
SOURCÉ
7.5V
SOURCE
7.5V
SOURCE
.. S¿~R~E

VOLTAGES TAKEN WITH SIGNAl
AOOmONAL SCHEIotATlC
NOTES. SEE PACE 3
A PHOTOFACT STANOARD NOTATlON SCHEIotATlC
WlTH .III:I."'I:7.IO'Io:!II
O c:o.'"7
IF
SEEQ7601
COu.ECTOR
PACE 2H
" " " '
SEE U3101
PIN 16
PACE3A
SEE U3101
PIN 15 C2722
~ .11
R1427
TELEVISION 8CH
CF1201
4.5MHz
R1201
680
, ' .
R1203
4700
82
C120S
1¡¡F
IDOY
AGC
SEEQ7101
G2
?ACE2G
r-~
I
I
I
I
I
I
I
L
R4302
22K
R7130
100
R2314
200K
C2307
.0471
C2308
.0221
C7'~~I
12.OV(A)
7.5V
- - - - - - - - - - - - - - - - - - - - - - - - ._-
SEE Q4153
BASE '
~
R4314
1000
CR2702
R4523~ C4307j
100 1~ IC4308
R4307 .022
3000
CR4115
R4134
S.1V
- -, ~,-
R4301
5600
4.7
7.5V
C43111R4308
4J~'" I00K
R4311
1000
Q4302 HORIZBUFFER ('4302
R4310 ~R4304" 1
1000 3.6Vr7\,v,v, I 4700 ...:¡
12.1V
R4309
2400
C4309
.')047
-I~1'
C4303.l CR4303
47~~1:
R2721
47
A~
7.5V
Al
A2
"

TAKENWITHCHROMA
BAR SWEEPGENERATOR
1.OV
10pa
TELEVISIONS
-_.J
02701 G-oSD
R3
3000 2~
R2713
R3317
10 360
18
:;L
OV
GRN OSO
I
I
I
100
LuJ;OV
,
C2705
2.2J,F
10bV
(10¡oF 63V)
*' ~'fh.1.;;rr. ~, ~i
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I
I
C2705.!.
2.2pF'1
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DI
50
7.5V
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35
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C2703
I00V
1¡oF
R2804
220
47
"3:7V" '"
OiROMA'
'J<ILl
R1425
82
~
R3330
10
R3329
2700
R3304
10
03304 VIDEO BUFFER
3.4VI R¡~~7
C3311
R3318
3000
¡~~
R2712
1500
7.5V 7.5V
VERT
.IV
C3315
1¡oF
100v
12.IV
CC VIDEO BLU OSO
131 171
2.7V OV
RJJ20
3000
19
---r;;
RED OSO
Y2801---
3.58IotHz
C~~~!
R2803
7.5V
02702 R-OSD
R2715
100
25
NC NC NC NC NC
R3343
5100
a
ES014 2200
C500113kV .
.001.
5m.
R3315
51K
SEE
T4401
PACE2E
RANGE
IN
25.5kV TO 27.5kV
/
TO CRT IN
ANOOE
R5050
3.3101
~
R5050 IS INTEGRAL
PARTOF"F"OCUSLEAD
NPO
750
R5018
C2723
1
I
HORlZ
24
7.5V
.1+
.7V
5.OV
10148
R2733
470
C2704
11'1'
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R2729tR2728
240K 470K
2~ 2~
PlX
ffi'
j¡'1
2~
7.5'
R2
1
Al
¿
A2
_1
AA
\
A3
~
.J

R340'iC340d
100 .Ol¡
5.rN
=' .001¡
CHUP RJ124
SW34iJ I 8 4.8V
. 001¡
'r 100. Q109
1 SW342' .
r' \/Ol UP 5.r:N
l-J RJI
SW3420 7 4.8V
R3108
Q108.L
R
10K KSI
j RJ101 M'M
I ¡
i SW3431
\/Ol DN
Y
LJ
5.r:N
r r
5.r:N
R3104
19..K
~TROL SCHEMATIC
U7501
QUAD OP NAP
CONTROLMICRa
KDI
5 r:N
KS2
IKS38 4.8V
PART
U3101
OF
201
Rf"SEC
SINGlE
TUNED
.:ZVI38
Rf"PRI
.8V135
.7VI34
R7504
28.1K
---
1~
R7503
IOK
1~
R7505
28.IK.
---
1~
R7502
IOK
1~
R7508
26.1K
--
'"
R7501
10K
'"
11
1011.:ZV .+
1211.3V ,+
511.3V ,+
SINGLE
.TUNED
1.7V1
8 C7506 .
I.:ZV
9 R7515
RF' 15.8K
1
PRI '"
2.3V1'4
R7513
I00K
1.3V 113
Rf"
SEC
2.SV17
R7510
I00K
1.3VI6
R7516
I00K R7524
t
I~ C7503 22K
'"
C7502.l. R7523
'"
R7517 R7520 R7129 SEE 07101
I00K 9'K '00 GI
.022+
.033~
R7514 R7519 R7131 SEE07101
I00K 91K 100 DRAlN
C7505.
.022+
-.,
.033~ 22K
R7512
15.8K
'"
R7511 R7518 R7133 SEE U7301
lOOK 91K 100 PIN 4
C7504
.022~
-.,
C7501.l. R7522
.033~ 22K
R7509
15.8K
R7525
1~
2200
PAGE 2G
PACE2G
PACE2H
SEE 07401
COLLECTOR
PACE 2H
veo
2712.r:N
PIP m-- NC
RI
10K
281 r:NR3305i
. "1::.. 1"
DATAIN
2l4.9V
T CHIP ffl
5.r:N
VOLTACESTAKENWITH SIGNAL
ADDmOlW. SCHEMAnC
NOTES. SEE PACE 3
A PHOTOFACTSTANDARDNOTAnON SCHEMAnC
WITH IOjI:;¡¡JJU~
O-.. -.. Co.'117
TUNER 4.8V115
RJ115
1000
RJII4 RJIII 5.r:N
1000 220
Q;021R3202
I~¡ 100
R3204
lOOK
5.r:N
2
1I1.4V
4
33.r:N(B)
R3112
220
61 51
4.7V 4.8V
8 14.9V U3201 EEPROM2K
24C02C
1.r:N R7507
R75081 14.3K
453 '"
'"
33.r:N(B)
R7521
820
SEE U7401
PIN 4
PACE 2H
SEE UI001
PIN 53
PACE 2A
SEE U7401
PIN 5
PACE 2H
SEE UI001
PIN M
PACE 2A

~;EO IN
IF \ICC
Iw....
3
ILEFTlV
WJOIO
IRIGHTlV
WJOIO
~
8
I!F
",NO
lO
11
12
¡""',
13
¡""'2
14
IS
18
17
18
19
2D
21
22
23
~~IZ
24
FlY!W:K
2S
X RAY
IPROTECT
28 SANO-
CASTU:
OUT
27
28
~ RAIIP I
29
PNM s:i
ilNn -- B+ TRIII
3D
~IN
31
I~
-
¡::;L/
32~~
iJ
BUS
COHTROI.
lV/l>JJX
lid
~
DEI'
~
DET
BUS COHTROI.
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C/O
\1
BUS COHTROI.
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BUS
, COHTROI.
AllEIIEI.
COHTROI.
H-PHASE
BUS
U1001
LA761 O
BUS BUS
COHTROI. CONTROl.
BHI DEFrAT ~ EIWIUE
-r;J
~
~
~
IC FUNCTIONS
BUS
CONTROL
PU. D.IC
~
BUS
CONTROL
nLTERS
~~
CO~L~
BWE IN
GREENIN
REDIN
AMI'
~I
CONV.
r ~' _CI
,
,
,
,
,
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I
,
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4
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BUS..J BUS
COHTROI.<.;:I TRANSCE1VER
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AUDIO OUT
RIGIfT
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AUD.
BIAS
CND
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CLCCK
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TSTIT.
BUS
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~
nLTER
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OUT
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CI
IN
YI
IN
C2
IN
Y2
IN
84
83
82
81
80
sg
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S7
!18
M
M
83
SI
so
4.
48
47
48
48
44
43
42
41
40
3.
B
38
e
37
R
38
38
34
33

MAINBOARD- BOTTOMVIEW,GRIDTRACELOCATIONGUIDE
CI202
CI203 0-12
C1204 N-12 C4119 N-8
CI716
CI915 EI3 C4121 J-12
CI916 C-12 C4132 J-12
CI952
CI954
C2301 L-12 C4157 J-5 RI202 M-12 R3124 J-8 R4134 K-1I
C2302 L-12 C4158 1-5
C2307
C2308 L-12 C4160
C2309
C2312 M-13 C4302 H-3
C2313 L-12 C4303 1-2 RI955 8-12 R3133
C2718 1-10
C2722 0-12 C4309 1-3
C2723
C2802 K-13 C4313
C2803
C2804 P-14 C4501 1-12 R2313
C2805
C3101 H-8 C4507
C3102
C3103 1-8 C4904
C3104
C3106 1-8 C7123
C3107
C3109 1-8 C7502 K-9
C3110
C3112
C3113 J-8 C7505 L-IO
C3114 J-9
C3115
C3122 K-8
C3125 H-IO CR4115
C3126
C3201
C3301 J-IO
C3303
C3306 G-8
C3307 G-IO
C3310 1-9
C3311
C3312 1-8
C3313 G-8
C3314
C3316 H-9
C3401 A-8
M-12 C4111
M-12 C4201
C4114 G-4
L-12
C4120 J-12
C-12 C4133 K-II
D-12 C4134 H-13 RI201 L-13 R3120 J-8
K-12 C4159 1-5
C4308
P-14
C4311
K-II C4401
K-13 C4503
H-8
C4903
1-8
C7109
J-9 C7501
H-8
C7503 J-IO R2713 H-II R3306
H-8 C7504 L-9
C7506 K-lO R2716
J-9 C7507 K-8 R2717 H-II R3316 H-9 R7507 K-9
CR3102 J-8 R2721 M-13 R3317 G-1I R7508 K-8
J-8 FB4110 M-9
F-9 FB4111 P-8
QI903
K-8
QI953
QI954
Q2701
Q2702
H-9
Q2703
Q2704
Q3101
G-9
Q3102
Q3301
Q3303
G-6
Q3304
Q3305
Q4106
Q4153
Q4302
Q7501
Q7502
RI203 L-13
RI427
J-5 RI902 F-13 R3130 J-9 R4166
P-8 RI951 D-12
RI954 8-12
K-12 RI956 C-12 R3134 1-8 R4304
RI957 C-12 R3135
J-13 RI961 D-12
F-8 R2301
K-2
R2312
1-12 R2314
E-4 R2315 L-II R3202 F-9
K-12 R2316 L-12 R3204 F-9 R7129
L-II R2702 J-II R3301 J-8 R7130
N-12 R2703 H-12 R3302 1-9 R7131 0-8
R2704 L-13 R3303 J-lO R7133 0-8
Q-9
J-9 R2705
R2712 H-12
R2714 G-12 R3310 H-8 R7504 1-9
R2715 G-II R3311 H-IO R7505 1-9
K-12 R2726 J-13 R3318
R2728
R2729 H-12 R3320 G-9
D-13 R2731
C-12 R2801 H-12 R3322 G-IO
R2802
C-12
H-12 R2803
G-12 R2804 K-13 R3325 H-9 R7521 K-8
H-12 R2805 K-14 R3326 G-9 R7522 J-9
L-14 R3101 1-8 R3327 H-9 R7523 K-lO
J-8 R3103 1-8 R3328
K-8 R3104
R3105
1-10
G-9 R3106 J-8 R3344
H-IO R3109 H-IO R3345 G-IO
H-IO R3111 H-8 R4101 1-11
L-S R3112 H-8 R4108 G-7
1-6
R3114 1-8 R4109 K-12
H-3 R3115 H-8 R4112 G-6
K-9 R3118 J-8 R4119 1-11
K-8 R3119 J-8 R4127 J-II
R4132 L-8
M-12 R3129 J-8 R4165
R3125
R3131 J-9 R4201
R3132 K-8 R4301 K-12
R3137
R3139 J-8 R4309 H-2
L-1I
K-12 R3140
L-II
R3145
L-12
R3201
R3304 G-IO
L-13
R3305
H-12
R3314 K-8 R7506 1-9
H-12 R3319 H-II R7510 K-9
J-12
R3321
H-12 R3323 G-IO R7516 J-IO
K-II
R3324
1-8
R3330
1-9 R3331 J-IO
1-8
R4154 K-4
K-8
R4362
K-8 R4307
J-IO R4308 J-12
H-8 R4311 J-12
K-8
R4314
F-9
R4516 D-7
R4520
R7501 K-9
H-9
R7502 K-9
1-9
R7503
H-8
R7509 K-9
R7511
G-II
R7513
R7514
H-IO
R7517 K-lO
R7524 J-IO
H-IO
J-13
J-IO
K-II
K-II
F-IO
J-II
Q-8
Q-8
K-lO
K-lO
P-8
H-3
K-9
K-9
1-7
1-6

CONTROLS&RESISTORS
ItemNo.
# R1908
# R1952, 53
RI959 2202% 1/4W
R2704, 05
# R2709 27K 5% 1/2W
R2728 470K2% 1/IOW
R2729 240K2% 1/8W
R2732
R2801 15K 1% I/IOW
R2802 15.8K 1% 11l0W
R3102 IOOK2% 1/4W 175044
R3317, 19.21
R3343 5100 2% 1/4W
# R4001
# R4002 2.7M 10% 112W
# R4113
# R4150 4.75% 3W Wirewound
# R4155
# R4157
R4158 3830 1% 1/4W
# R4172 150K 5% 1/4W 175566
R4303 51002% 1/4W 175417
R4305
# R4401 15K5% IW
# R4403 8205% IW
# R4507 1.55% IW
# R4511 1 10% 2W Wirewound 215577
# R4701 102% 1I2W Nonflarnrnable
# R4702 3.3 5% 2W Wirewound
# R4703
# R4704 82K 5% 1I2W
# R4705 1005% 1I4W
# R4901 100 5% 1I4W 829110
# R4902
# R4903
# R4904 IOK5% 1I4W
# R4905 51002% 1I4W
R7401 191K 1% 1IIOW
R7408 37.4K1% I/IOW
R7411
.R7501,02,03
R7504,05,06
R7507
R7508
R7509
R7510
R7512 15.8K 1% 1/4W 181121
R7513 looK 1%11l0W 215221
R7515 15.8K1%1/4W 181121
R7516
RN4501 Resistor Network 215499
# RT4201
FunctionlRating
185% 3W
3.3 5% 1/4W 829A33
1805% 1/4W
10002% 1/IOW
12401% 1/4W
3602% I/IOW 205337
2.710% 15WWirewound
1805% 2W
1605% 15WWirewound 193069
143K1%1/4W 184980
95.3K 1% I/IOW
26101% 1/4W 217313
6800 5% 3W 179249 3W268
3.3 5% 3W Wirewound 195730
26.7K 1% 1/4W 196081
39.2K 1% 1/4W
1M1% IIl0W
.IOK 1% 1/IOW 215217
26.1K1% 1/8W 215218
14.3K 1% 1/IOW 215219
453 1% 1IIOW 217317
15.8K 1% 1110W 215199
looK 1%I/IOW 215221
100K 1% 1/IOW
5.5 Cold PTC 207768
Mfr.PartNo. NTEPartNo.
181234
175324
176646
197638
206037
205381
215687
196030
215198
215199
175417
190487
217662
163032 2W118
222007
217311
221946
190557 1W315
175349 lWI82
178619 IWID5
830010 HWOIO
217315
830382 HW382
829110
190469
175317
175417
215214
215215
215216
215221
3W318
QW3D3
QWI22
QW118
-
HW327
-
EW424
-
-
-
QW410
-
QW215
-
HW527
-
-
-
-
-
-
QW415
QW215
-
-.
-
QWII0
QWIIO
-
-
QW310
QW251
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
# For SAFETY use only equivalent replacement parto