Sanyo CZP1662 User manual

SERVICE MANUAL Colour Television
“L
Model No. CZP1662
(New Zealand)
Service Ref. No. CZP1662- 00
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LSpecifications
Power Source .................... AC220-240v, 50 Hz.
Television &Colour
System ................................PAL-B/G
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Channel Coverage ............. VHF: 1 – 11
UHF: 21 – 69
1 II
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Video IF............................. 38.9 MHz
Sound IF............................ 33.4 MHz
Aerial Input Impedance ...... 75 S2
.Ext. Terminals .................... Video inputs: Phono jack x1
Audio inputs: Phono jack x1
Sound Output ..................... 3.OW
.Dimensions ........................ 490(W) x370(H) x408(D)mm
Weight ............................... approx. 19Kg
Product Code: 111311819
Original Version
Chassis Series: A3- Al 6
Give complete “SERVICE REF. No.” for parts
order or servicing. It is shown on the rating plate
at the cabinet back of the unit,
This T.V. receiver will not work properly in
foreign countries where the television trans -
mission system and power source differ from the
design specifications. Refer to the specification
table. I
Specifications subject to change without notice,
“L
E2CZ REFERENCE NO. SM 520053

(TO Q472)
m
IAERIAL
‘h
DEGAUS
HEADPHONE sp
K171 c
n
MAIN UNIT lcli’lAUDIOO”T J*
IC701 CPU
—— -Q785 w
4
CONTROL
SWITCHES 22
SW701-SW713Jo 16 AFTSWITCH Q751 II
I
14 4 R/C
PRE.AMP
,3 CONTRA TCONTROL ,2 BRIGHTdESSCONTROL
,1 COLOUR’CONTROL
VOLUME’CONTROL*
10
-14
II iTO Q641
BANDOUT Iclol
WF,SIF,VIDEO
CHROMA,DEF.
A101
TUNER
VL
VH +Q732
N/AV
+;TUNING sWITCH Q101
IFAMP 10
IF *~12
VR261
AGC SAW 14
AFC4FILTER RF-AGC 46
l-i
VR211
SUB-BRIGHT.
---- POWERCONTROL
43l--
B-Y
J
R-Y
G-’I
Vlc
0641
A0641
B-DRIV VR602 0611
I
vR621
Q621 G-OU
\
I-BIAS
VR611
T261
u.iTCUtNG II-471 -
‘LYBACK TIANS. I
1511 I......-. .- H.V.
CONVERT13 . . I-RAN< I I I CHROMA IN IUlilvt (JU III2:XI-I !.f.mr.Al
—----- ......... . .
~[:g!,,p~; :,:,;
~v _-pklF
‘=---J1’ -’Q-;~:B 1
TVIAVSWITCHING w9
INPUT IF501 B2 ~
16-.14.8 Es
m= 18V 12V IC551
POWERREG.
I4

Service Control Adjustments
B1 POWER SUPPLY ADJ.
1
i) Connect DC meter to “TP- B“ and ground.
~
(1) Receiver the monochrome circular pattern.
Set the +B1 adjustment control (VR551) to mid- range. (2) Press preset switch (SW706),and the tuning bar is displayed.
(2) Set brightness and contrast to minimum, (3) Adjust VR71 Ofor optimum tuning bar width
Tune the receiver to an active channel and synchronize picture. Press preset switch, and the tuning bar will disappears.
(3) Adjust +B1 adjustment control for 130 f1.0 volt DC.
\MAIN UNIT
L
A701 SOUND/COLOUR
RC PRE-AMP. BRIGHTNESS/CONTRAST
HEADPHONEJACK
SW701 SW702 SW703 SW704 K171
SUB BRIGHTNESS
C,,me4
ADJ.
1% -
Ek6°7)’=l,RrL
VR411
u- rYArr!=n “F-22=”T
—.
L
I?bWl ICHINti
FOCUS ADJ.
(UPPER)
TP-H
●
I~m
T471
F.B.T.
~ ~ ;%::N
KOY /PL__._--_~----w–
HORIZ.ORIVE
0431 l-m-. !7 ac
iii
a11 ~O&_ VR121@
<0 TP-L L121
IAUb:OIN VIDEO IN
I/VERTICAL slzE m. \ \
L-1-=== J
(1)Tune the receiver to mono -VIDEO DET. ADJ.
chrome circular pattern. 1. Receive the PAL colour bar pattern.
(2)Adjust vertical size (VR451 )(See Fia. 1)
L
Icontrol for full scan. 2. Connec; the oscillator to TP- F.
1’ 3. AdjustVR121 for 1.OVP- pas
HORIZONTAL CENTER ADJ.
GREY SCALE AND
TRACKING ADJ. shown in Fig. 2. m~
A’
Video det.
waveform 1,Ovp-p
(Fig. 2) L
ii7yj,,:02
CRT UNIT (14 ‘) EDRIVE
‘P-6 B- U
&:~;RIVE
py:l”T @WWBIAs
J-p
,!
“~’ *WVNVIAS
*%:UT $’#)VRf311
11~ ●
TP- 8A RED BIAS
TP- 6E /
.
[]K’PCRG2,=;
‘u=
#JTp-6B
Q601
B- OUT
K6Q
(Fig. 1) PAL Colourbar Pa~ern
PAL COLOUR ADJ.
–2–

Service Control Adjustments
.
1
SAFETY PRECAUTIONS :An isolation transformer should be connected in the power line between the receiver and the AC
line before any service is performed on the receiver. .-
X-RADIATION PRECAUTION The primary source of X-RADIATION in television receiver is the picture tube. The picture
tube is specially constructed to limit X-RADIATION emission. For continued X-RADIATION protection, the replacement tube must
be the same type as the original including suffix letter, Excessive high voltage may produce potentially hazardous X-RADIATION.
To avoid such hazards, the high voltage must be maintain within specified limit. Refer to this service manual for specific high
voltage limits, If high voltage exceeds specified limits, take necessary corrective action. Carefully follow the instructions for +B1 volt
power supply adjustment, and high voltage check to maintain the high voltage within the specified limits.
NOTE; Do not attempt this adjustment with weak signal.
(1) Tune the receiver to most clearest (or strongest) VHF
station in your area. Set the brightness and contrast
controls to maximum. Set the colour control to minimum.
(2) Set AGC (VR1 01) control to mid- range.
(3) Turn AGC control in direction which causes snow to appear,
then in the opposite direction until the snow just disappears.
(1) Connect aDC meter between “TP- H“ (positive lead) and
“TP -G“ (negative lead) on main unit.
(2) Receive the circular pattern.
(3) Set the brightness to maximum and contrast to minimum.
(4) Adjust the sub brightness control (VR211) for 0.2V(1 6“).
NOTE: If the picture tube replaced, check the sub-brightness
adjustment.
(1) Receive the monochrome circular pattern.
(2) Set the brightness and contrast to normal.
(3) Adjust VR411 for optimum horizontal center position,
F7Fw’’z”n’a’cen’er
(1) Receive the monochrome circular pattern.
(2) Set the brightness and contrast to normal.
(3) Vertical centering can be adjusted by switching SW451.
rtical center
(1) Receive the monochrome circular pattern.
(2) Set the brightness to normal and contrast to maximum.
(3) Adjust the focus control on the F.B.T for the best focus on
the screen center.
Receive PAL colour bar pattern. (see Figl on the page2.)
Set the brightness, colour and contrast to maximum.
IADJUST. ]REMARKS
Connect the oscilloscope to TP6B on CRT unit
2I-21 1Adjust L211 to obtain proper waveform as shown
above. I
(1) Receiver the monochrome circular pattern.
(2) Set the brightness and the contrast to maximum, the colour
to minimum.
(3) Set the service switch (SW251 )at the service side.
(4) Set the drive volume (VR602 and VR612) at their
mechanical center.
(5) Set the bias volume (VR601, VR621 and VR611 )to
minimum. (fully counter clockwise).
(6) Turn the screen volume to obtain just visible one coloured
line.
(7) Adjust each bias volume (VR601 -blue, VR621 -green and
VR611 -red) alternately until adim white line produced.
(8) Set the service switch (SW251 )at the normal side.
(9) Adjust the drive volume (VR602 -blue and VR612 -red) -
alternately to produce normal black and white picture.
(1O)Check for proper grey scale tracking at all brightness
levels.
NOTE: if the grey scale adjustment is made after picturetube
replacement, check high voltage and sub -brightness
adjustment.
(1) Receive the monochrom circular pattern.
(2) Set the brightness and contrast to maximum.
(3) If the picture is too wide or narrow, cut or short the “AJ1” on
the main unit .When AJl is shorted, the horiz. width
increase. When AJl is cut, the horiz. width decrease.
(4) Connect ahigh voltage probe to anode lead of the picture
tube.
(5) The high voltage must be between 20- 22KV(1 6“).
NOTE: If the picture tube is replaced, check the high voltage. --
The horiz. width adjustment affects the high voltage and
–3– sub brightness. Therefore, recheck the sub brightness
and the high voltage.

VIF Adjustment
L
.
;
L
L
.
L
Item 1st Waveform
R701 -A
TP-C
Tuner –TP
TP– L
TP– K
R715 –A(through 330 QR)
Overall Waveform
DC 15.5V
DC5-8V
Output Probe
Input Probe
Tuning Voltage 12V
DC 15.5V
R701 -A
TP-C
Tuner –TP
TP– L
TP– K
R715 –A(through 330 QR)
ATT
Oscilloscope Sens.
Output Probe
Dumping Resistor
Setting Band
VR101
OdB
100mV/div
side a
not used
VHF Low Band
clockwise end
100Q
‘B
20 dB
100mV/div
side b
TP –D(100 Qresister)
VHF Low Band
clockwise end
1, Adjust P(38.9MHz) is 5’%. higher than
C(34.47MHz)by using Tuner converter
coil.
Adjust P(38.9MHz) to be
maximum by using T121.
Adjustment 2. Adjust Pk307. f107. and Cis 25% t
10% by using T1 01.
c
s
Waveform
7
DC15,5V
MAIN UNIT
m330“F
n
,,0
SW251
-r
SERVICESWITCH
1
3‘!?4 Input Probe
*
Oscilloscope
a—
--l &TP-B AT- (QI D
~--- ---- ---- -- An
-511
:ONVERTER
“RANS.
IC451
VERT.
DEF. !D;, Qpjijg!
1st
Waveform ~dj
aOverall Waveform Adj.
Tune; Converter Coil
Output Probe
~Erker
<’ 1111 I
–4–

AFT Adjustment
Item AGC Voltage Alignment Resonance Frequency Adj.
DC 15.5V R701 –AR701 –A
DC 5 – 8V (AGC) TP– CTP– C
c
oOutput Probe Tuner –TP Tuner –TP
.—
GInput Probe TP– LTP– J
al
c
cTuning Voltage 12V TP– KTP-K
6DC33V TP– BTP– B
ATT 20dB 100 Q20 dB
c
oOscilloscope Sens. 10OmV/div
‘B
lV/div
,-
+Output Probe
%side bside b
cDumping Resistor TP –D(100 S2resister) not used
8SG Output none 20mVrms (ATT20dB )
Fix the AGC voltage when the Keep AGC voltage which is adjusted at
Adjustment overall waveform level is adjusted AGC voltage alignment, and adjustT131
at l. OVp-p. for 38.9 MHz marker is just on the
reference line.
Waveform ~-’p.p +ine
MAIN UNIT
mF
R701
1
3
a
wD
-B-
DC33V
“511
:ONVERTER
“RANS. 11 ml
1..‘n~“il -- :%%E%
u
,r-n~
IC451
vERT. IID/-.
IT281 N
DEF, / I ,fi, a, i / ❑u
-10
I
{
‘v
IU3 h
., ❑Ololw ,
;T131
mT~pD
:00 T101
,=r 7; .-
D
K
u
z0
2
+
ETune
z
JII
—-.
‘0 —TP- Lm21”’ ‘*
Resonance Frequency Adj.
Input Probe
Outwt Probe
—
Oscilloscope
a0.002UF
oSweep Marker
P‘Generator
750
b
“G”4 d
–5–

PURITY AND CONVERGENCE ADJUSTMENT
LCAUTION: The Convergence and Purity adjustments have been made at the factory. Readjustment should be
made only after picture tube or deflection yoke replacement, following the steps below
PURITY ADJUSTMENT
1. Demagnetize the picture tube and receiver using an external
degaussing coil. When replacing picture tube or deflection
yoke, mount deflection yoke and purity -convergence
magnets assembly properly, see figures 1and 4.
2.Turn Red and Blue guns off and provide only Green raster.
Rotate Screen control to fully counterclockwise. Rotate Red
and Blue Bias controls fully counterclockwise. Slowly rotate
Green Bias control clockwise to produce Green raster.
\3. Loosen the screw holding the Deflection Yoke and remove
the 3Rubber Wedges, and slide the Deflection Yoke fully
frontward.
4. Rotate and spread the Tabs of the two Purity Magnets to
center the vertical green belt in the picture screen. The Purity
Magnets are also adjusted to obtain vertical centering of the
raster.
5. SIOWIY slide the Deflection Yoke backward until auniform
Lgreen screen is obtained.
6.Check the purity of the red and blue screens for uniformity,
turn off other colours to check this (use bias controls).
Readjust the yoke position if necessary until all screens are
pure.
7.Adjust each Bias control and screen control to obtain white
raster. Refer to Gray Scale Adjustment. If part of the picture
screen is coloured, adjust the Deflection Yoke position
.forward or backward slightly.
L
Figure- 1. PURITY AND CONVERGENCE MAGNETS
IAdjust tabs angle to superimpose
blue and red vertical line
JAdjust tabs together to
+“
“D\___ p__~ /;;;;%z%$l%d
BLUE I
I
Figure-2 BLUE AND RED LINE MOVEMENT
8. Tighten the mounting screw of the Deflection Yoke. Adjust
Convergence next.
CENTER CONVERGENCE ADJUSTMENT
1. Use adot crosshatch pattern signal.
2. Turn Red and Blue guns on and turn off Green gun. Adjust
the angle between the Tabs of the Four Pole Magnet 1and
2,and superimpose the Red and Blue vertical lines in the
center area of the picture screen. Refer to figure 2.
3. Keeping the mutual angle of the Tabs of the Four Pole
Magnet turn them together to superimpose the Blue and Red
horizontal lines in the center area of the picture screen. Refer
to figure 2.
4. Turn Green gun on and adjust Six Pole Magnet 3 and 4 sthat
the Green line superimposed on the Red/Blue lines,
This is the same procedure used in steps 2 and 3.
Refer to figure 3.
OUTER AREA CONVERGENCE ADJUSTMENT
Slightly loosen the screw holding the Deflection Yoke. Adjust
the Deflection Yoke to converge the detail in the outer area (left
side and right side) of the picture screen by orbital movement of
the front of the Yoke, then secure the Deflection Yoke in
appropriate position by putting the wedges as illustrated.
Tighten screw holding the Deflection Yoke.
DEFLECTION YOKE
ION YOKE
GSCREW
Figure- 4. ADJUSTMENT DEFLECTION YOKE
IAdjust tabs angle to superimpose
red/blue and green vertical line
JAdjust tabs together to
+
GREEN
\___ r’ -4. /
superimpose red/blue
and green horizontal line
I
BLUE/RED I
Figure- 3BLUE/RED AND GREEN LINE MOVEMENT
–6–

CABINET PARTS LIST
Note :Parts order must contain Service Ref. No., Key No., Parts No., and Description.
Ii
A5!!5+,lm.qyfj’y
,/
\
65 43\\2
10
,’
/“
,’
,’
13
12
:ey Part No. Description ‘ey Part No.
{0. No. IDescription
1. 6102302486 BUTTON 10. 610 230 0932 CABINET BACK
—.
I6102298406 SPRING 6102481358 LABEL RATING
.—
2. I 610 241 2192 TRANSPARENT BOARD 11. 610231 8395 RC TRANSMITTER JXLi
———
3. I 610 230 2356 BUTTON-ASSY 12. 610 011 6405 ROD ANTENNA ASSY -
— —
4. I 610 241 2208 DOOR or 610217 1006 ROD ANTENNA ASSY
——.——.
5. IG1O 104 2505 pUSH LATCH 13. 610 211 9299 ANT MAT~H~~G BOX
6. 610 230 257~–DEC SHEET ——
7. 610 230 ‘2547 SASH
8“ I61O 240”8393 CABINET FRONT-ASSY
9. f310 Z40 8454 SPEAKER GRILLE (z used) —
I
-.
———
—-
–7–

CPU Redacement (lm~ortant Note ! )
When IC701 is replaced, it is necessary to make the initializing of IC701 as following
procedure.
(1) Switch off the TV set.
(2) Replace IC701.
(3) Switch on the TV set.
m
x2
(Screen Display)
(4) Press and hold the SPECIAL key (of the remote control transmitter) for more than 2.5 seconds.
n
Sp- -
L
(5) Input SPECIAL CODE
nSPO1
,
.
“01” by pressing the programme selector of the remote control transmitter.
(6) Press the MEMORY button of the TV set.
n2
The initializing is now completed.
REMARKS: If there is mistaking the procedure, switch off the TV set and repeat steps (3) to (6).
LNext, operate the pre- setting of the stations to allocate the TV channels (Refer to the instruction manual of this
TV set.) .
L
–8–

E2CZ
CHASSIS ELECTRICAL PARTS LIST
Product safety should be considered when acomponent replacement is made in any area of areceiver.
Components indicated by a~mark in this parts list and the circuit diagram show components whose value have
special significance to product safety. It is particularly recommended that only parts specified on the following parts
list be used for components replacement pointed out by the mark.
Note: Part order must contain Service Ref. No.,Part No.,and descriptions. The main PCB unit will be supplied without tuner and
flyback transformer. They should be ordered separately.
Read description in the CaDacitor and Resister as follows:
CAPACITOR
CERAMIC 100P
TT
K50V
I_ ~Rated Voltage
Tolerance Symbols:
Less than 10PF
kNot s!Jecdled B: ~O.l PF
Dto,<PF
R+0.25- OPF
More than 10PF
kNot spectile(
D: t0.5%
H: +3%
FflpF
S: +0- O.25PF
B: kO.1%
F* 1’%
J: *5%
[
L:i 15% M: ~20%
P+100-0% Q: +30- 10%
u: +75- 10% v: +20- 10%
x: +40- 20% Y: +150-10%
Rated value: P=pico farad, U=Micro farad
Material :
CERAMIC .............Ceramic
MT- PAPER ..........Metallized Paper
POLYESTER .........Pofyeeter
MT- PO LYEST ......Metal lized Polyester
POLYPRO .............Polypropylene
MT- POLYPRO .....Metallized Polypropylene
COMPO FILM ........Composite film
MT- COMPO .........Metallized Cmposite
STYRENE .............Styrene
TA -SOLID ..,,........Tantalum Solid
AL- SOLID ............Aluminium Solid
ELECT ..................Electrolytic
NP- ELECT ...........Non- polarized Electrolytic
OS-SOLID ...........Aluminium Solid with Omanic
Semiconductive Electro~~ic
OL- ELECT ...........tlouble Layered Electrolytic
RESISTE
CARBON
T
C: *0.25PF
G: A2pF
E: +0-1 PF
C: ~0.25%
G: ~2%
K+li)%
N: ~30%
T+50-10%
W:+loo- lo%
z: +80- 20%
LLRated Wattage
Performance Symbols:
A: General B:Non flammable Z:Low noise
Other :Temperature coefficient
‘Tolerance Symbols:
A: f0.05% B: f0.1% C: ~0.25%
F: t1% G: ~2% J: ~5%
M: f20% P+5- 15%
—Rated value, ohms
K1 ,000, M:l ,000,000
Ma~erial :
CARBON ..,,..,.., ....Carbon
MT- FILM,..,...,.., .....Metal Film
OXIOE- MT ............Oxide Metal Film
SOLID ....................Composition
MT- GLAZE .,.........Metal Glaze
WIRE WOUND ,..,...Wire Wound
CERAMIC RES..,...,Cmicmic
FUSIBLE RES ........Fusible
D: *0.5%
K:f10%
Ref. No. Part No. Description
6102205541 CRT UNIT-E2MMUE2159
TRANSISTER
0601 4050405600 TR 2SC2228-D
4050296901 TR 2SC2228-E
4060005104 TR 2SC2229-O(SAN-2)
4060005203 TR 2SC2229-Y(SAN-2)
0611 4050405600 TR 2SC2228-D
4050296901 TR 2SC2228-E
4060005104 TR 2SC2229-O(SAN-2)
4060005203 TR 2SC2229-Y(SAN-2)
0621 4050405600 TR 2SC2228-D
4050296901 TR 2SC2228-E
4060005104 TR 2SC2229-O(SAN-2)
4060005203 TR 2SC2229-Y(SAN-2)
0641 4050405600 TR 2SC2228-D
4050296901 TR 2SC2228-E
4060005104 TR 2SC2229-O(SAN-2)
4060005203 TR 2SC2229-Y(SAN-2)
CAPACITOR
C601 403071 5606 CERAMIC 220P K 50V
C602 4030745702 CERAMIC 560P K 50V
C611 403071 5606 CERAMIC 220P K 50V
C612 4030745702 CERAMiC 560P K 50V
C621 403071 5606 CERAMIC 220P K 50V
C622 4030748901 CERAMIC 680P K 50V
C631 4030772708 CERAMIC 1000P P 2K
C642 4030240009 CERAMIC 39P J 50V
RESISTER
R601 401 0654604 OXIDE-MT 12K JA 2W
R602 401 0020102 SOLID 3.3K KA l/2W
R603 401 0142903 CARBON 150 JA 1/4W
R611 401 0654604 OXIDE-MT 12K JA 2W
R612 401 0020102 SOLID 3.3K KA l/2W
R613 401 0142903 CARBON 150 JA 1/4W
R621 401 0654604 OXIDE-MT 12K JA 2W
R622 401 0020102 SOLID 3.3K KA l/2W
R623 401 0142903 CARBON 150 JA 1/4W
R624 401 0162604 CARBON 220 JA 1/4W
R631 401 001 7607 SOLID 270K KA 1/2W
R632 401 0181605 CARBON 33 JA 1/4W
R642 401 0221905 CARBON 680 JA 1/4W
VARIABLERESISTER
VR601 6100190825 VR
VR602 6100190818 VR
VR611 6100190825 VR
VR612 6100190818 VR
VR621 6100190825 VR
MISCELLANEOUS
K601 6100103634 CRT SOCKET
.-
—9—