Aiwa TV-AS216NH NH User manual

SERVICE MANUAL
DATA
COLOR TELEVISION
TV-AS216
S/M Code No. 09-022-450-7R1
REVISION
NH(S)
 This Service Manual is the Revision Publishing and replaces Simple Manual
(S/M Code No 09-01C-450-7T1)

 2 
SPECIFICATIONS ..............................................................................................................................................................3
NOTICES BEFORE REPAIRING ......................................................................................................................................4
DISASSEMBLY INSTRUCTIONS ................................................................................................................................5 ~ 9
ELECTRICAL PARTS LIST ..................................................................................................................................... 10 ~ 17
CHIP RESISTOR PART CODE ......................................................................................................................................18
TRANSISTOR ILLUSTRATION........................................................................................................................................ 18
WIRING 1 (MAIN)..........................................................................................................................................................19
SCHEMATIC DIAGRAM 1 (MAIN 1 / 2) ........................................................................................................................20
SCHEMATIC DIAGRAM 2 (MAIN 2 / 2) ........................................................................................................................21
WIRING 2 (NK) ..............................................................................................................................................................22
SCHEMATIC DIAGRAM 3 (NK) ...................................................................................................................................23
IC BLOCK DIAGRAM ..............................................................................................................................................24 ~ 25
IC DESCRIPTION ............................................................................................................................................................26
WAVEFORM ............................................................................................................................................................. 27 ~ 28
CRT ADJUSTMENT ................................................................................................................................................. 29 ~ 32
ELECTRICAL ADJUSTMENT .................................................................................................................................. 33 ~ 46
MECHANICAL EXPLODED VIEW .................................................................................................................................. 47
MECHANICAL PARTS LIST ............................................................................................................................................ 48
COLOR NAME TABLE ....................................................................................................................................................49
ACCESSORIES PARTS LIST .........................................................................................................................................50
OTHER PARTS LIST ......................................................................................................................................................51
TABLE OF CONTENTS

 3 
SPECIFICATIONS
Tuner System Frequency synthesized tuner
TV System NTSC-M
Channel Coverage VHF: 2 to 13
UHF: 14 to 6
CATV: 5A, A-1 to A-5, A to W, W+1 to W+84
Program Memory 181
Antenna Input 75 ohms, unbalanced
Picture Tube 21in
Screen Size 406 (W) X 305 (H) mm (16 X 121/8 in.)
508 mm (diagonal) (20 in.)
Video Input 1 Vp-p 75 ohms
Audio Input -4dBs, 47K ohms
Video Output 1 Vp-p 75 ohms
Audio Output -4dBs, 2K ohms less
Speaker Æ80 mm (31/4 in.)
Operating Voltage 120V AC, 60Hz
Po er Consumption 72W
Phones Jack Stereo-mini jack
Operating Temperature 5OC  40OC
Operating Humidity 35%  80%
Dimensions 542 (W) x 440 (H) x 478 (D) mm
(213/8 x 173/8 x 187/8 in.)
Weight 21.8kg (47. 6 lbs.)
 Design and specifications are subject to change without notice.

– 4 –
NOTICES BEFORE REPAIRING
To make the best use of this equipment, make sure to
obey the following items when repairing (or mending).
1. Do not damage or melt the tunicate of the leading
wire on the AC1 side, including the power supply
cord.
2. Do not soil or stain the letters on the spec.
inscription plates, notice labels, fuse labels, etc.
3. When repairing the part extracted from the
conducted side of the board pattern, fix it firmly
with applying bond to the pattern and the part.
4. Restore the following items after repairing.
1) Conditions of soldering of the wires (especially,
the distance on the AC1 side).
2) Conditions of wiring, bundling of wires, etc.
3) Types of the wries.
4) Attachment conditions of all types of the insulation.
5. After repairing, always measure the insulation
resistance and perform the voltage-withstand test
(See Fig-1).
1) The insulation resistance must be 7.0 to 9.5 MΩ
when applying 500V per second.
2) In the voltage withstand test, apply 1.5 kV for 1
minute and check that the GO lamp lights.
* Breaking current set to 10 mA.
* Connect the safety checker as shown in Fig-1,
then measure the resistance and perform the test.
* Do not touch the equipment during testing.
* For details of the safety checker, refer to the supplied
Operation manual.
Fig-1
Safety checker (Model 7110, etc.)
Earth cable
AC cable Connectthe earthcable
tothe outsidemetal part
terminal.
Insulation resistance: 7.0 to 9.5 MΩ(500 V/s)
Voltage-withstand: 1.5 kV for 1 minute
Safety Components Symbol
This symbol is given to important parts which serve to maintain the safety of the product, and which
are made to confirm to special Safety Specifications.
Therefore, when replacing a component with this symbol make absolutely sure that you use a
designated part.
!
When servicing and checking on the TV, note the followings.
board. The inside wiring is designed not to get close to
the pyrogenic parts and high voltage parts. Therefore,
put these parts in the original positions.
5. Take care of the cathode-ray tube.
By setting an explosion-proof cathode-ray tube in this
equipment, safety is secured against implosion.
However, when removing it or servicing from the
back, it gives out shock that is dangerous. Take
enough care to deal with it.
6. Avoid an X-ray.
Safety is secured against an X-ray by giving
considerations to the cathode-ray tube and the high
voltage peripheral circuit, etc. Therefore, when
repairing the high voltage peripheral circuit, use the
designated parts and do not change the circuit.
Repairing, except indicates, causes rising of high
voltage, and the cathode-ray tube emits an X-ray.
7. Perform a safety check after servicing.
Confirm that the screws, parts and wiring which were
removed in order to service are put in the original
positions, or whether there are deteriorated portions
around the places serviced.
1. Keep the notices.
As for the places which need special attentions, they
are indicated with labels or seals on the cabinet,
chassis and parts. Make sure to keep the indications
and notices in the operation manual.
2. Avoid an electric shock.
There is a high voltage part inside. Avoid an electric
shock while the electric current is flowing.
3. Use the designated parts.
The parts in this equipment have the specific
characteristics of incombustibility and withstand voltage
for safety.
Therefore, use a part which has the same character
as the replaced part. Especially as to the important
parts for safety which is indicated in the circuit
diagram or the table of parts with a mark, the
designated parts must be used.
4. Put parts and wires in the original position after
assembling or wiring.
There are parts which use the insulation material such
as a tube or tape for safety, or which are assembled so
that these parts do not make contact with the printed
!

 5 
DISASSEMBLY INSTRUCTIONS
1. REAR CABINET REMOVAL
2. HIGH-VOLTAGE CAP (ANODE CAP) REMOVAL
2-1. Cautions b for R moving
Discharge the anode voltage
(1) The anode voltage is not discharged completely from the
CRT of this unit even after the power is turned off. Be
sure to discharge the residual anode voltage before
removing the anode cap.
Do not use pliers
( ) Do not use pliers, etc. to remove the anode cap. If you
used pliers and bent the hook to remove the cap, the spring
characteristics of the hook could be lost, and when
reinstalled, the cap would come off from the CRT anode
button easily, causing an accident.
Do not turn the anode cap
(3) If the anode cap is turned in the direction of its
circumference, the hook is likely to come off.
2-2. Anod Cap R moval
Discharge the anode voltage. (See Figure -1)
(1) Connect a flat-bladed screwdriver to the CRT GND via
an alligator clip.
( ) Use a tester to check the end of the screwdriver and ground
of the TV for continuity.
(3) Touch the hook with the end of the screwdriver.
Caution : Be careful not to damage the anode cap.
(4) Turn over the anode cap.
Caution : Be careful not to damage the anode cap.
(1) Remove four screws 1 and three screws , then remove
the rear cabinet in the direction of the arrow.
(See Figure1-1)
Front cabinet
Rear cabinet
Figure 1-1
Anode cap
CRT GND
Hook CRT
CRT GND
Grip
Figure 2-1
CRT CRT
Anode cap
Hook Hook

 6 
(5) Push the anode cap with your thumb in the direction of
arrow 1 as shown in the figure, then lift the cap in the
direction of arrow 2 to release the hook on one side.
(See igure 2-3)
(6) Turn over the anode cap on the side where the hook was
released and pull out the cap in the direction opposite to
that on which the cap was pushed. (See igure 2-4)
Caution : Do not pull out the anode cap straight up.
: Do not pull the cap forcibly. After removing
the cap, check that the hook is not deformed.
3. ANODE CAP REINSTALLTION
Observe the cautions carefully so that no accident occurs
due to a defect in installing the anode cap and so it does
not come off.
3-1. Caution before Reinstalling
Never turn the anode cap after installing it
Never re-use the hook when it has been deformed
(1) If the anode cap is turned after it is installed, it may come
off. Therefore, arrange the high-voltage cable before
attaching the anode cap. (See igure 3-1)
(2) If you have attached the anode cap before arranging the
high-voltage cable, arrange the cable carefully so the cap
does not turn.
3-2. Ano e cap reinstallation
(1) Use a clean cloth moistened slightly with alcohol to clean
the installation section. (See igure 3-2)
Caution : Check that the installation section is free from
dust, foreign matter, etc.
(2) Coat the anode cap installation circumference with an
appropriate amount of the specified silicone grease (KS-
650N).
Caution : Be careful that silicone grease does not enter
the anode button.
Figure 2-3
CRT CRT
Anode cap
Hook Hook
Anode cap
Hook
Anode button
CRT
Figure 2-4
Left Right
Anode cap
Figure 3-1
Anode button
Installation
section
Figure 3-2

– 7–
(3) Eliminate twisting, etc. of the high-voltage cable and
arrange it so that no twisting occurs. (See Figure 3-3)
Caution : If the cable is not arranged correctly, the anode
capcould turnand cause an installation defect.
(4) Turn over the rubber cap symmetrically on the left and
right. (See Figure 3-4)
Caution : Take great care not to damage the anode cap.
Figure 3-3
(5) Fit your forefinger over the projection at the center of the
cap and hold the cap between your thumb and middle
finger. (See Figure 3-5)
Figure 3-4
Figure 3-5
High-voltage cable Anode cap

– 8–
(6) Apply the hook on one side to the anode button as shown
on the figure. (See Figure 3-6)
Caution : Check that the hook is held securely.
(7) Apply the hook on the other side to the anode button as
shown in Figure 3-7.
(8) Pull the anode cap slightly with the rubber cap turned
over and visually check that the hook is engaged securely.
(9) Release your hand from the rubber cap of the anode cap.
Caution : Cover the anode cap so that it does not lift.
(10) Hold the skirt of the andoe cap slightly to improve the
close contact between the cap and CRT.
(11) Check that the anode cap is in close contact with the CRT.
(See Figure 3-8)
Figure 3-8
Figure 3-7
Figure 3-6
Anode cap
Skirt
Hook
Anode button
Anode button
Hook
Anode button
Hook
30°

 9 
4. NK C.B REMOVAL
(1) Disconnect CN904 (CRT GND).
(2) Remove the NK C.B in the direction of arro 1 .
(See Figure 4-1)
5. MAIN C.B REMOVAL
(1) Remove connector (CN406).
(2) Remove connector (CN881).
(3) Remove connector (CN801).
(4) Pull out the MAIN C.B in the direction of the arro 2 .
(See Figure 4-1)
6. DECIDING A SERVICING POSITION
(1) Remove the CN406 (speakers).
(2) Rotate the circuit board to the direction ith arro A,
and set it up. (See Figure 5-1)
Figure 5-1
CN881
Front cabinet
CN406
(Speakers)
NK C.B
CN901
CN902
MAIN
C.B
CN904
CN801
(Power Cord)
Figure 4-1
(Degaussing Coil)

! = ! SAFTY PARTS
C = Components marked
All components used on this model at the production line are shown in this service manual.
However please note that not all components will be available as spare parts for after-sales service.
Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.
Components marked X and R are not designated as spare parts for after sales service and will not be stocked at the spare parts centers.
UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL
 10 
ELECTRICAL PARTS LIST
TV-AS216
NH2C
MAIN O C 0001 87-010-405-080 CAP,E 10-50 M 11L SME a
MAIN O C 0002 86-ZA1-616-080 C-CAP,U 0.01-50 K B (MU ) a
MAIN O C 0003 86-ZA1-616-080 C-CAP,U 0.01-50 K B (MU ) a
MAIN O C 0004 87-012-199-080 C-CAP,U 220P-50 J CH a
MAIN O C 0005 87-010-401-080 CAP,E 1-50 M 11L SME a
MAIN O C 0007 87-010-248-080 CAP,E 220-10 M 11L SME a
MAIN O C 0008 87-012-199-080 C-CAP,U 220P-50 J CH a
MAIN O C 0009 87-010-401-080 CAP,E 1-50 M 11L SME a
MAIN O C 0010 87-012-274-080 C-CAP,U 1000P-50 K B a
MAIN O C 0012 87-012-195-080 C-CAP,U 100P-50 J CH a
MAIN O C 0013 87-012-195-080 C-CAP,U 100P-50 J CH a
MAIN X C 0014 88-100-000-010 PLATING-JW, 0.58 SN95 a
MAIN O C 0015 87-010-405-080 CAP,E 10-50 M 11L SME a
MAIN O C 0016 87-012-274-080 C-CAP,U 1000P-50 K B a
MAIN O C 0017 87-010-263-080 CAP,E 100-10 M 11L SME a
MAIN O C 0018 87-012-180-080 C-CAP,U 22P-50 J CH a
MAIN O C 0019 87-012-180-080 C-CAP,U 22P-50 J CH a
MAIN O C 0021 87-012-180-080 C-CAP,U 22P-50 J CH a
MAIN O C 0022 87-012-180-080 C-CAP,U 22P-50 J CH a
MAIN O C 0023 87-012-199-080 C-CAP,U 220P-50 J CH a
TV-AS216
NH2C
MAIN O C 0025 87-012-271-080 C-CAP,U 560P-50 K B a
MAIN O C 0031 86-ZA1-616-080 C-CAP,U 0.01-50 K B (MU ) a
MAIN O C 0039 87-012-195-080 C-CAP,U 100P-50 J CH a
MAIN O C 0040 87-012-195-080 C-CAP,U 100P-50 J CH a
MAIN O C 0041 87-012-195-080 C-CAP,U 100P-50 J CH a
MAIN O C 0042 87-012-195-080 C-CAP,U 100P-50 J CH a
MAIN O C 0101 87-010-404-080 CAP,E 4.7-50 M 11L SME a
MAIN O C 0104 87-010-263-080 CAP,E 100-10 M 11L SME a
MAIN O C 0105 86-ZA1-616-080 C-CAP,U 0.01-50 K B (MU ) a
MAIN O C 0106 86-ZA1-616-080 C-CAP,U 0.01-50 K B (MU ) a
MAIN O C 0111 87-018-134-080 CAP,TC U 0.01-16 N Y UP050 a
MAIN O C 0112 87-012-180-080 C-CAP,U 22P-50 J CH a
MAIN O C 0113 87-012-180-080 C-CAP,U 22P-50 J CH a
MAIN O C 0201 86-ZA1-616-080 C-CAP,U 0.01-50 K B (MU ) a
MAIN O C 0202 86-ZA1-616-080 C-CAP,U 0.01-50 K B (MU ) a
MAIN O C 0203 87-010-400-080 CAP,E 0.47-50 M 11L SME a
MAIN O C 0204 86-ZA1-616-080 C-CAP,U 0.01-50 K B (MU ) a
MAIN O C 0205 87-010-237-080 CAP,E 1000-16 M SME a
MAIN X C 0206 88-700-660-810 CAP,M 2200P-50 J a
MAIN O C 0207 87-010-400-080 CAP,E 0.47-50 M 11L SME a
TV-AS216
NH2C
MAIN O C 0208 86-ZA1-616-080 C-CAP,U 0.01-50 K B (MU ) a
MAIN O C 0209 87-010-237-080 CAP,E 1000-16 M SME a
MAIN O C 0210 87-012-188-080 C-CAP,U 47P-50 J CH a
MAIN O C 0211 87-012-188-080 C-CAP,U 47P-50 J CH a
MAIN O C 0212 87-012-188-080 C-CAP,U 47P-50 J CH a
MAIN X C 0214 88-700-850-810 CAP,M 0.047-50 J AMZV a
MAIN X C 0215 88-700-850-810 CAP,M 0.047-50 J AMZV a
MAIN O C 0229 87-012-176-080 C-CAP,U 15P-50 J CH a
MAIN O C 0231 87-010-101-080 CAP,E 220-16 M SME a
MAIN O C 0233 87-010-112-080 CAP,E 100-16 M 11L SME a
MAIN O C 0251 87-010-404-080 CAP,E 4.7-50 M 11L SME a
MAIN O C 0252 87-010-402-080 CAP,E 2.2-50 M 11L SME a
MAIN O C 0253 87-010-404-080 CAP,E 4.7-50 M 11L SME a
MAIN O C 0254 87-A10-917-080 C-CAP,TN 10-10 M A TCFG a
MAIN O C 0255 87-010-263-080 CAP,E 100-10 M 11L SME a
MAIN O C 0256 86-ZA1-616-080 C-CAP,U 0.01-50 K B (MU ) a
MAIN O C 0257 87-010-546-080 CAP,E 0.33-50 M 11L SME a
MAIN X C 0258 88-700-830-810 CAP,M 0.022-50 J AMZV a
MAIN O C 0259 87-016-091-080 C-CAP,TN 3.3-10 M a
MAIN O C 0260 87-A12-317-080 C-CAP,U 0.1-50 Z F a
TV-AS216
NH2C
MAIN O C 0261 87-A12-317-080 C-CAP,U 0.1-50 Z F a
MAIN O C 0262 87-A12-317-080 C-CAP,U 0.1-50 Z F a
MAIN O C 0263 87-015-464-080 CAP,E 4.7-16 BP a
MAIN O C 0264 87-A12-317-080 C-CAP,U 0.1-50 Z F a
MAIN O C 0265 87-A12-317-080 C-CAP,U 0.1-50 Z F a
MAIN O C 0266 87-A10-025-080 C-CAP,U 0.22-16 Z F a
MAIN O C 0301 87-010-401-080 CAP,E 1-50 M 11L SME a
MAIN O C 0302 87-012-199-080 C-CAP,U 220P-50 J CH a
MAIN O C 0303 87-010-401-080 CAP,E 1-50 M 11L SME a
MAIN O C 0304 87-010-265-080 CAP,E 33-16 M 11L SME a
MAIN O C 0305 87-012-269-080 C-CAP,U 390P-50 K B a
MAIN O C 0306 87-010-964-080 CAP,E 10-160 M SME a
MAIN X C 0307 88-700-830-810 CAP,M 0.022-50 J AMZV a
MAIN O C 0308 87-010-400-080 CAP,E 0.47-50 M 11L SME a
MAIN O C 0309 87-012-172-080 C-CAP,U 10P-50 D CH a
MAIN O C 0311 87-A12-317-080 C-CAP,U 0.1-50 Z F a
MAIN O C 0312 87-A12-317-080 C-CAP,U 0.1-50 Z F a
MAIN O C 0313 87-A12-317-080 C-CAP,U 0.1-50 Z F a
MAIN O C 0315 87-012-199-080 C-CAP,U 220P-50 J CH a
MAIN O C 0316 87-A10-378-080 CAP,E 2.2-50 K SH a