JVC AV-16N8 User manual

AV-16N8
No. 56094 1
CONTENTS
■SPECIFICATIONS ........................................................................................................................... 2
■SAFETY PRECAUTIONS ................................................................................................................ 3
■FEATURES ...................................................................................................................................... 4
★OPERATING INSTRUCTIONS (APPENDED).............................................................................. 1-1
■SPECIFIC SERVICE INSTRUCTIONS ............................................................................................ 4
■SERVICE ADJUSTMENTS............................................................................................................10
★STANDARD CIRCUIT DIAGRAM (APPENDED) ......................................................................... 2-1
■PARTS LIST................................................................................................................................... 27
BASIC CHASSIS
CL-M
AV-16N8
COPYRIGHT  2000 VICTOR COMPANY OF JAPAN, LTD. No. 56094
Sep. 2000
+
+
−
−
SERVICE MANUAL
COLOUR TELEVISION
AV-16N8(VT)

AV-16N8
No. 560946
SYSTEM CONSTANT - I
SYSTEM CONSTANT SET 1/3
SYSTEM CONSTANT - II
SYSTEM CONSTANT SET 2/3
−/+: OPERATE DISP : EXIT
− / + : OPERATE DISP : EXIT
11. LANGUAGE : E/V
12. TUNER : MU
13. AMP TUNER : YES
14. VNR : NO
SYSTEM CONSTANT - III
SYSTEM CONSTANT SET 3/3
− / + : OPERATE DISP : EXIT
Fig. 2
a: SELECT
a: SELECT
a: SELECT
6. SPATIALIZER : YES
7. VOL. LIMITER : YES
8. B/B SOUND : NO
9. TEXT : NO
10. COLOUR AUTO : NO
1. INCH : 21
2. COLOUR : MULTI
3. VIDEO INPUT : 1
4. ECO SENSOR : YES
5. SUPER BASS : NO
REPLACEMENT OF MEMORY IC
1. MEMORY IC
This TV uses the following memory IC.
Memory IC: IC1702 on MAIN PW Board
The memory IC memorizes data for correctly operating the
video and deflection circuits. When replacing the memory IC,
be sure to use the same type IC written with the initial values
of data. In other words, use the specific IC listed in "PRINTED
WIRING BOARD PARTS LIST". For its mounting location, re-
fer to "ADJUSTMENT LOCATIONS".
2. PROCEDURE FOR REPLACING MEMORY IC
(1) Power off
Switch the power off and unplug the power cord from the
wall outlet.
(2) Replacing the memory IC
Replace the memory IC with new one. Be sure to use the
memory IC written with the initial data values.
(3) Power on
Plug the power cord into the wall outlet and switch the
power on.
(4) Check and setting of SYSTEM CONSTANT SET:
1) Press the DISPLAY key and the PICTURE MODE key
on the remote control unit simultaneously.
The SERVICE MENU screen will be displayed. (See
Fig. 1.)
2) In the SERVICE MENU, press the DISPLAY key and
PICTURE MODE key simultaneously. Then, the SYS-
TEM CONSTANT SET screen will be displayed. (See
Fig. 2.)
3) Check whether thesetting values ofthe SYSTEM CON-
STANT SET are the same as those indicated in Table
1. If the value is different, select the setting item with
the MENU akey, and set the correct value with
the MENU −/ +key.
4) Press the DISPLAY key twice to return to the normal
screen.
(5) Receive channel setting
Refer to the OPERATING INSTRUCTIONS and set the
receive channels (channels preset).
(6) User setting
Check the user setting values in Table 2, and if setting
value is different, set the correct value.
For setting, refer to the OPERATING INSTRUCTIONS.
(7) Setting of SERVICE MENU
Verify the setting for each setting item in the SERVICE
MENU. (See Table 3.) If readjustment is necessary, per-
form adjustment referring to "SERVICEADJUSTMENTS".
Fig. 1
SERVICE MENU
1. IF
3. VSM PRESET 2.V/C
SERVICE MENU
1-3 : SELECT DISP : EXIT
✽✽✽✽✽✽✽✽ ✽✽✽✽✽ ✽✽.✽✽✽✽
✽✽✽ ✽✽✽✽✽ ✽✽.✽✽✽✽

AV-16N8
No. 56094 7
DISPLAY POWER
MENU
+
+
−
−
LIVE
SPATIAL
CHANNEL VOLUME
SYSTEM
COLOUR SOUND MUTING
PICTURE MODE
RETURN+
ECO SENSOR OFF TIMER
123
456
78
0
9
-/--
RM-C234 REMOTE CONTROL UNIT
MENU
MENU
MENU
+
PICTURE
MODE
DISPLAY
MENU
−
TV/VIDEO
CHANNEL SCAN
PICTURE
BOOSTER
NAME OF REMOTE CONTROL KEYS
Setting item Setting contents Setting value
1. INCH 21
2. COLOUR MULTI
3. VIDEO INPUT 1
4. ECO SENSOR YES
5. SUPER BASS NO
6. SPATIALIZER YES
7. VOL. LIMITER YES
8. B/B SOUND NO
9. TEXT NO
10. COLOUR AUTO NO
11. LANGUAGE E/V
12. TUNER MU
13. AMP TUNER YES
14. VNR NO
SETTING OF SYSTEM CONSTANT SET Table 1
29 25 21 14
MULTI. TRIPLE PAL
13
YES NO
YES NO
YES NO
YES NO
YES NO
YES NO
YES NO
E E/V
MU MA
YES NO
YES NO
Setting item Setting value Setting item Setting value
SUB POWER ON BASS CENTER
CHANNEL POSITION 1 POSITION BALANCE CENTER
CHANNEL PRESET Refer to OPERATING INSTRUCTION. OFF TIMER OFF
VOLUME Appropriate sound volume AUTO SHUTOFF OFF
TV/VIDEO TV ECO SENSOR OFF
ON SCREEN DISPLAY POSITION NUMBER DISPLAY LANGUAGE VIETNAMESE
COLOUR SYSTEM PAL BLUE BACK OFF
SOUND SYSTEM B / G ON TIMER PR1 0:00
PICTURE MODE (VSM) BRIGHT CHILD LOCK OFF
LIVE SPATIAL OFF PICTURE BOOSTER OFF
TREBLE CENTER
USER SETTING VALUES
Table 2

AV-16N8
No. 560948
Service menu Setting item
1. IF 1. VCO
2. DELAY POINT
2. V / C 1. CUTOFF(R/G/B)
2. DRIVE(R/B)
3. BRIGHT
4. CONT.
5. COLOUR
6. TINT (TV/VIDEO)
7. BLACK OFFSET(R-Y/B-Y)
8. SHARP
9. TEXT(RGB)CONT.
10. H. CENTER
11. V. HEIGHT
12. V. LIN
13. V.S-CR
14. V. CENTER
15. AMP T. SHARP
SERVICE MENU SETTING ITEMS
Table 3
Service menu Setting item
3. VSM PRESET TINT
(BRIGHT/STD/SOFT) COLOUR
BRIGHT
CONT.
SHARP
Do not adjust.
Do not adjust.

AV-16N8
No. 5609410
SERVICE ADJUSTMENTS
BEFORE STARTING SERVICE ADJUSTMENT
MEASURING INSTRUMENT
AND FIXTURES
1. DC voltmeter (or Digital voltmeter)
2. Oscilloscope
3. Signal generator (Pattern generator)
[PAL / SECAM / NTSC]
4. Remote control unit
1. There are 2 ways for adjusting this TV: One is with the
REMOTE CONTROL UNIT and the other is the conventional
method using adjustment parts and components.
2. The setting (adjustment) using the REMOTE CONTROL
UNIT is made on the basis of the initial setting values. The
setting values which adjust the screen to the optimum con-
dition can be different from the initial setting values.
3. Make sure thatconnection is correctlymade toAC powersource.
4. Turnonthe power of theTV and measuring instrument forwarm-
ing up for at least 30 minutes before starting adjustment.
5. If the receive or input signal is not specified, use the most ap-
propriate signal for adjustment.
6. Never touch parts (such as variable resistors, transformers and
capacitors) not shown in the adjustment items of this service
adjustment.
7. Preparation for adjustment (presetting):
Unless otherwise specified in the adjustment items, preset the
following functions with the remote control unit.
BASIC OPERATION IN SERVICE MENU
1. TOOL OF SERVICE MENU OPERATION
Operate the SERVICE MENU with the remote control unit.
2. SERVICE MENU ITEMS
With the SERVICE MENU, various settings (adjustments) can be made, and they are broadly classified in the following items of settings:
●1. IF ............................. For entering/adjusting the setting values (adjustment values) of the IF circuit.
●2. V/C........................... For entering/adjusting the setting values (adjustment values) of the VIDEO/CHROMA and DEFLECTION cir-
cuits.
●3. VSM PRESET ......... For setting the values of STANDARD, SOFT and BRIGHT
(VSM: video status memory)
ADJUSTMENT/CHECK ITEMS
Adjustment/Check item Page
B1 POWER SUPPLY Check 14
FOCUS Adjustment 14
IF CIRCUITAdjustment 14
V/C (VIDEO/CHROMA) CIRCUITAdjustment 15
DEFLECTION CIRCUIT Adjustment 21
VSM PRESET Adjustment 23
PURITY, CONVERGENCE Adjustment 24
Function
PICTURE MODE (VSM)
COLOUR/BRIGHT/CONT./SHARP
OFF TIMER
ECO SENSOR
BLUE BACK
PICTURE BOOSTER
Setting value
BRIGHT
See "VSM Preset"
on page 23.
OFF
OFF
OFF
OFF

AV-16N8
No. 56094 11
3. BASIC OPERATION IN SERVICE MENU
(1) How to enter SERVICE MENU
Press the DISPLAY key and the PICTURE MODE key on
the remote control unit simultaneously.
The SERVICE MENU screen will be displayed. (See Fig. 1.)
(2) Selection of SUB MENU SCREEN
Press one of the keys 1 ~ 3 on the remote control unit, and
select the SUB MENU SCREEN from the SERVICE MENU.
(See Fig. 2.)
SERVICE MENU →SUB MENU 1. IF
2. V / C
3. VSM PRESET
Fig. 1
SERVICE MENU
1. IF
3. VSM PRESET 2.V/C
SERVICE MENU
1-3 : SELECT DISP : EXIT
✽✽✽✽✽✽✽✽ ✽✽✽✽✽ ✽✽.✽✽✽✽
✽✽✽ ✽✽✽✽✽ ✽✽.✽✽✽✽
SUB MENU SCREEN
Fig. 2
SERVICE MENU
BRIGHT
✽✽
✽✽
✽✽
✽✽
✽✽
SUB MENU 3.VSM PRESET
a: SELECT
− / + : OPERATE DISP : EXIT
BRIGHT / STD / SOFT
Setting item
TINT
COLOUR
BRIGHT
CONT.
SHARP
1.VCO
2. DELAY POINT
1-2 : SELECT DISP : EXIT
IF
SUB MENU 1. IF
VCO (CW) ✽✽✽.✽✽ MHz
TOO HIGH
ABOVE REFERENCE
BELOW REFERENCE
TOO LOW
DISP : EXIT
DELAY POINT
AGC TAKE-OVER
✽✽
−/+: OPERATE DISP : EXIT
Setting item
1. CUTOFF(R/G/B)
2. DRIVE(R/B)
3. BRIGHT
4. CONT.
5. COLOUR
6. TINT (TV/VIDEO)
7. BLACK OFFSET(R-Y/B-Y)
8. SHARP
9. TEXT(RGB)CONT.
10. H. CENTER
11. V. HEIGHT
12. V. LIN
13. V.S-CR
14. V. CENTER
15. AMP T. SHARP
Setting item
PAL
1. CUTOFF (R)
✽ ✽✽
(G) ✽ ✽✽
− / + : OPERATE DISP : EXIT
(B)
✽ ✽✽
a: SELECT
V/C
SUB MENU 2.V/C
1. IF
3. VSM PRESET 2.V/C
SERVICE MENU
1-3 : SELECT DISP : EXIT
✽✽✽✽✽✽✽✽ ✽✽✽✽✽ ✽✽.✽✽✽✽
✽✽✽ ✽✽✽✽✽ ✽✽.✽✽✽✽
50Hz
TINT
COLOUR
BRIGHT
CONT.
SHARP

AV-16N8
No. 5609412
(3) Method of Setting
*Once the setting values are set, they are memorized automatically.
*It must not adjust without inputting a signal.
1) 1. IF
[1. VCO]
(a) 1 Key ......................................... Select 1. IF.
(b) 1 Key ......................................... Select 1. VCO. (CW)
(c) VCO(CW) TRANSF. .................. Adjust VCO(CW) while watching the colour (yellow/blue) of the characters on the screen.
(d) DISPLAY Key ............................ When this is pressed twice, you will return to the SERVICE MENU.
[2. DELAY POINT]
(a) 1 Key ......................................... Select 1. IF.
(b) 2 Key ......................................... Select 2. DELAY POINT.
(c) MENU −/ +Key......................... Adjust the setting value.
(d) DISPLAY Key ............................ When this is pressed twice, you will return to the SERVICE MENU.
2) 2. V/C and 3. VSM PRESET
(a) 2 and 3 Keys ............................. Select 2. V/C and 3. VSM PRESET.
(b) MENU akey........................ Select setting items.
(c) MENU −/ +Key......................... Adjust the setting values of the setting items.
●Use the number keys on the remote control unit for setting of WHITE BALANCE and BLACK
OFFSET. For the setting, refer to each item concerned.
(d) DISPLAY Key ............................ When this is pressed, you will return to the SERVICE MENU.
(4) Release of SERVICE MENU
After completing the setting, return to the SERVICE MENU by pressing the DISPLAY key, then again press the DISPLAY key to return
to the normal screen.

AV-16N8
No. 5609414
Description
1. Receive a whole black signal.
2. Connect a DC voltmeter between TP-91 (B1) and TP-E (")
(between pins 1 and 5 of the connector S1).
3. Make sure that the voltage is DC114.5 ±1.5V.
Description
1. Receive a cross-hatch signal.
2. While watching the screen, adjust the FOCUS VR to make the
vertical and horizontal lines as fine and sharp as possible.
3. Make sure that, when the screen is darkened, the lines remain
in good focus.
Measuring
Item Test point Adjustment part
instrument
Adjustment Remote VCO (CW)
of VCO (CW) control unit TRANSF.
[MAIN PWB]
Description
●Under normal conditions, no adjustment is required.
1. Select 1. IF from the SERVICE MENU.
2. Press the 1key to select 1. VCO.
3. Select a receivable broadcast channel with the CHANNEL key.
4. Turn the core of VCO(CW) TRANSF. until the colour of the
characters "TOO HIGH" displayed on the screen changes from
blue to yellow. (Step 1)
5. Then slowly turn the core of VCO(CW) TRANSF. counterclock-
wiseuntil thecharacters "ABOVEREFERENCE" changes from
blue to yellow. (Step 2)
6. Further slowly turn the core of VCO(CW) TRANSF. until the
colour of the characters "BELOW REFERENCE" changes from
blue to yellow. (Step 3)
7. Press the DISPLAY key three times to return to normal screen.
8. Perform CHANNEL PRESET again, and make sure that each
broadcast is being received properly.
ADJUSTMENTS
B1 POWER SUPPLY
Measuring
Item Test point Adjustment part
instrument
Check of Signal TP-91 (B1)
B1 POWER Generator TP-E (""
""
")
SUPPLY [S1
DC Voltmeter connector]
Measuring
Item Test point Adjustment part
instrument
Adjustment Signal FOCUS VR
of FOCUS generator [In HVT]
FOCUS ADJUSTMENT
IF CIRCUIT ADJUSTMENT
Step
Screen display 123
TOO HIGH Yellow Blue Blue
ABOVE REFERENCE Blue Yellow Blue
BELOW REFERENCE Blue Blue Yellow
TOO LOW Blue Blue
TOO HIGH
ABOVE REFERENCE
BELOW REFERENCE
TOO LOW
VCO (CW) ✽✽✽.✽✽ MHz
DISP : EXIT
fv
YELLOW

AV-16N8
No. 56094 15
Colour system Variable Initial setting value
Setting item range PAL SECAM NTSC 3.58 NTSC 4.43
1. CUT OFF (R / G / B) −128 ~ +127 0 b b b
2. DRIVE (R / B) −128 ~ +127 0 b b b
3. BRIGHT −64 ~ +63 −11 b b b
4. CONT. −58 ~ +28 −10 b b b
5. COLOUR −60 ~ +67 +7+11 +12 −2
6. TINT TV / VIDEO −64 ~ +63 +5 / 0 −2 / 0
7. BLACK OFFSET (R-Y / B-Y) −8 ~ +7 0 / 0
8. SHARP TV / VIDEO −32 ~ +31 +5 / +3b b b
9. TEXT (RGB) CONT. −128 ~ +127 +15 b b b
15. AMP T. SHARP −128 ~ +127 −15 b b b
Measuring
Item Test point Adjustment part
instrument
Adjustment Remote DELAY POINT
of DELAY control unit (AGC TAKE-OVER)
POINT
Description
1. Receive a black and white signal (colour off).
2. Select 1. IF from the SERVICE MENU.
3. Select 2. DELAY POINT by pressing the 2key on the remote
control.
4. Adjust the MENU −or +key until video noise disappears.
5. Press the DISPLAY key three times to return to the normal
screen.
6. Turn to other channels and make sure that there are no irregu-
larities.
V/C (VIDEO/CHROMA) CIRCUIT ADJUSTMENT
The setting (adjustment) using the remote control unit is made on the basis of the initial setting values.
The setting values which adjust the screen to the optimum condition can be different from the initial setting values.
●Do not change the initial setting values of the setting (adjustment) items not listed in "ADJUSTMENT".
[SUB MENU 2. V/C (1. CUT OFF (R / G / B) ~ 9. TEXT (RGB) CONT. and 15. T. AMP SHARP)]
Setting Variable Initial setting
(Adjustment) range value
item
DELAY POINT 0 ~63 20
(AGC TAKE-OVER)
: Do not adjust.

AV-16N8
No. 5609416
Measuring
Item Test point Adjustment part
instrument
Adjustment ●Signal 1. CUTOFF (R)
of WHITE generator CUTOFF (G)
BALANCE CUTOFF (B)
(Low light) ●Remote
control SCREEN VR
unit (In HVT)
Adjustment ●Signal 2. DRIVE (R)
of WHITE generator DRIVE (B)
BALANCE
(High light) ●Remote
control
unit
Description
1. Receive a black and white signal (colour off).
2. Select 2. V/C from the SERVICE MENU.
3. Select 1. CUTOFF (R), (G) and (B) with MENU akey, and
set each value to initial setting value with 4~9keys on the
remote control unit.
4. Press the 1key on the remote control unit to produce a single
horizontal line.
5. Turn the SCREEN VR fully counterclockwise, then slowly turn
it clockwise to where a red, blue, or green colour is faintly vis-
ible.
6. Use keys 4~9on the remote control unit and adjust the other
2 colours to where the single horizontal line appears white.
7. Turn the SCREEN VR to where the single horizontal line glows
faintly.
8. Press the 2key to return to 1. CUTOFF screen.
9. Press the DISPLAY key twice to return to the normal screen.
1. Receive a black and white signal (colour off).
2. Select 2. V/C from the SERVICE MENU.
3. Select 2. DRIVE (R) / (B) with MENU akey, and set each
value to initial setting value with 4and 7keys, or 6and 9keys
on the remote control unit.
4. Use the keys 4and 7or 6and 9to produce a white screen.
5. Press the DISPLAY key twice to return to the normal screen.
Setting (Adjustment) Variable Initial setting
item range value
R−128 ~+127 0
2. DRIVE B−128 ~+127 0
Setting (Adjustment) Variable Initial setting
item range value
R−128 ~+127 0
1. CUT OFF G −128 ~+127 0
B−128 ~+127 0
PAL
2. DRIVE (R)
✽ ✽✽
(B) ✽ ✽✽
− / + : OPERATE DISP : EXIT
a: SELECT
V/C
50Hz
PAL
1. CUTOFF (R)
✽ ✽✽
(G) ✽ ✽✽
− / + : OPERATE DISP : EXIT
(B)
✽ ✽✽
a: SELECT
V/C
50Hz
R. CUTOFF ( )
G. CUTOFF ( )
H.LINE OFF
H.LINE ON
12 3
4
789
56
R. CUTOFF ( )
R. DRIVE ( )
R. DRIVE ( )
G. CUTOFF ( )
B. CUTOFF ( )
B. DRIVE ( )
B. CUTOFF ( )
B. DRIVE ( )
REMOTE CONTROL UNIT

AV-16N8
No. 56094 17
Measuring
Item Test point Adjustment part
instrument
Adjustment Remote 3. BRIGHT
of control unit
SUB
BRIGHT
Adjustment Remote 4. CONT.
of control unit
SUB CONT.
Adjustment Remote 5. COLOR
of control unit
SUB
COLOUR-IPAL COLOUR
SECAM COLOUR
NTSC 3.58 COLOUR
Description
1. Receive any broadcast.
2. Select 2. V/C from the SERVICE MENU.
3. Select 3. BRIGHT with the MENU akey.
4. Set the initial setting value with the MENU −or +key.
5. If the brightness is not the best with the initial set value, make
fine adjustment until you get the best brightness.
6. Press the DISPLAY key twice to return to the normal screen.
1. Receive any broadcast.
2. Select 2. V/C from the SERVICE MENU.
3. Select 4. CONT. with the MENU akey.
4. Set the initial setting value with the MENU −or +key.
5. If the contrast is not the best with the initial set value, make
fine adjustment until you get the best contrast.
6. Press the DISPLAY key twice to return to the normal screen.
[Method of adjustment without measuring instrument]
(PAL COLOUR)
1. Receive a PAL broadcast.
2. Select 2. V/C from the SERVICE MENU.
3. Select 5. COLOUR with the MENU akey.
4. Set the initial setting value for PAL COLOUR with the MENU
−or +key.
5. If the colour is not the best with the initial set value, make fine
adjustment until you get the best colour.
6. Press the DISPLAY key twice to return to the normal screen.
(SECAM COLOUR)
1. Receive a SECAM broadcast.
2. Make fine adjustment of SECAM COLOUR in the same way
as for "PAL COLOUR".
(NTSC 3.58 COLOUR)
1. Receive a NTSC 3.58MHz broadcast.
2. Make similar fine adjustment of NTSC 3.58 COLOUR in the
same way as for "PAL COLOUR".
(NTSC 4.43 COLOUR)
When adjustment is done for NTSC 3.58 COLOUR, appropriate
values are automatically set for NTSC 4.43 COLOUR.

AV-16N8
No. 5609418
Measuring
Item Test point Adjustment part
instrument
Adjustment ●Signal TP-47G 5. COLOUR
of SUB generator TP-E (""
""
")
COLOUR-II [CRT
●Oscillo- SOCKET PAL COLOUR
scope PWB]
●Remote
control
unit
SECAM COLOUR
NTSC 3.58 COLOUR
Description
[Method of adjustment using measuring instrument]
(PAL COLOUR)
1. Receive a PAL full field colour bar signal (75% white).
2. Select 2. V/C from the SERVICE MENU.
3. Select 5. COLOUR with the MENU akey.
4. Set the initial setting value of PAL COLOUR with the MENU
−or +key.
5. Connect the oscilloscope between TP-47G and TP-E.
6. Adjust PAL COLOUR to set the value (A) in the figure to +11V
(W & G).
(SECAM COLOUR)
1. Receive a SECAM full field colour bar signal (75% white).
2. Set the initialsetting value ofSECAM COLOUR withthe MENU
−or +key.
3. Adjust SECAM COLOUR to set the value (A) in the figure to
+10V (W & G).
(NTSC 3.58 COLOUR)
1. Receive a NTSC 3.58 full field colour bar signal (75% white).
2. Set the initial setting value of NTSC 3.58 COLOUR with the
MENU −or +key.
3. Adjust NTSC 3.58 COLOUR to set the value (A) in the figure
to +9V (W & G).
(NTSC 4.43 COLOUR)
When adjustment is done for NTSC 3.58 COLOUR, appropriate
values are automatically set for NTSC 4.43 COLOUR.
Mg B
(−)
0V
(+)
R
Cy
Y
WG
(A)

AV-16N8
No. 56094 19
Measuring
Item Test point Adjustment part
instrument
Adjustment Remote 6. TINT
of control unit
SUB TINT-INTSC 3.58 TINT
Adjustment ●Signal TP-47G 6. TINT
of generator TP-E (""
""
")
SUB TINT-II [CRT
●Oscillo- SOCKET
scope PWB] NTSC 3.58 TINT
●Remote
control
unit
Description
[Method of adjustment without measuring instrument]
(NTSC 3.58 TINT)
1. Receive a NTSC 3.58 colour bar signal (full field colour bar
75% white).
2. Select 2. V/C from the SERVICE MENU.
3. Select 6. TINT with the MENU akey.
4. Set the initial setting value of NTSC 3.58 with the MENU −or
+key.
5. If you cannot get the best tint with the initial setting value,
make fine adjustment until you get the best tint.
6. Press the DISPLAY key twice to return to the normal screen.
(NTSC 4.43 COLOUR)
When adjustment is done for NTSC 3.58 TINT, appropriate val-
ues are automatically set for NTSC 4.43 TINT.
[Method of adjustment using measuring instrument]
(NTSC 3.58 TINT)
1. Receive a NTSC 3.58 colour bar signal (full field colour bar
75% white).
2. Select 2. V/C from the SERVICE MENU.
3. Select 6. TINT with the MENU akey.
4. Set the initial setting value of NTSC 3.58 with the MENU −or
+key.
5. Connect the oscilloscope between TP-47G and TP-E.
6. Adjust NTSC 3.58 TINT to set the value (B) in the figure to
+8V (W & Cy).
7. Press the DISPLAY key twice to return to the normal screen.
(NTSC 4.43 TINT)
When adjustment is done for NTSC 3.58 TINT, appropriate val-
ues are automatically set for NTSC 4.43 TINT.
Mg B
(−)
0V
(+)
R
Cy
Y
W
(B)
G

AV-16N8
No. 5609420
Measuring
Item Test point Adjustment part
instrument
Adjustment Remote
of BLACK control unit
OFFSET-I
(SECAM) 7.BLACK OFFSET
(R-Y)
(B-Y)
Adjustment ●Signal 35 PIN (R-Y)
of BLACK generator 36 PIN (B-Y)
OFFSET-II IC 201 on
(SECAM) ●Oscillo- MAIN PWB 7.BLACK OFFSET
scope (R-Y)
(B-Y)
●Remote
control
unit
Description
[Method of adjustment without measuring instrument]
1. Receive a SECAM broadcast.
2. Select 2. V/C from the SERVICE MENU.
3. Select 7. BLACK OFFSET with the MENU akey.
4. Set the initial setting value for BLACK OFFSET (R-Y) and (B-
Y) with 4and 7or 6and 9keys on the remote control unit.
5. If the picture is not the best with the initial setting value, make
fine adjustment until you get the best picture.
6. Press the DISPLAY key twice to return to the normal screen.
[Method of adjustment using measuring instrument]
1. Receive a SECAM COLOUR bar signal (full field colour bar
75% white).
2. Select 2. V/C from the SERVICE MENU.
3. Select 7. BLACK OFFSET with the akey.
4. Connect the oscilloscope between pin 35 of IC 201 and TP-E.
5. By using 4and 7keys on the remote control unit, adjust the
BLACK OFFSET (R-Y) so that the waveform changes from
(a) to (b) as shown in the figure.
6. Connect the oscilloscope between pin 36 of IC 201 and TP-E.
7. By using 6and 9keys on the remote control unit, adjust the
BLACK OFFSET (B-Y) so that the waveform changes from
(c) to (d) as shown in the figure.
8. If the picture is not the best with the adjusted picture, make
fine adjustment until you get the best picture.
9. Press the DISPLAY key twice to return to the normal screen.
12 3
4
789
56
R-Y ( )
R-Y ( )
B-Y ( )
B-Y ( )
REMOTE CONTROL UNIT
BLACK &
WHITE ON
BLACK &
WHITE OFF
Flat Flat
(b)(a)
[R-Y]
(c) (d)
[B-Y] Flat Flat

AV-16N8
No. 56094 21
Measuring
Item Test point Adjustment part
instrument
Adjustment ●Signal 11. V. HEIGHT
of generator
V. HEIGHT ●Remote
control
unit
Description
[ fv : 50Hz mode]
1. Receive a cross-hatch signal.
2. Select 2. V/C from the SERVICE MENU.
3. Select 11. V. HEIGHT with the MENU akey.
4. Set the initial setting value of 11. V. HEIGHT with the MENU −
/ +key.
5. Adjust V. HEIGHT and make the vertical screen size 92% of
the picture size with the MENU −/ +key.
DEFLECTION CIRCUIT ADJUSTMENT
●There are 2 modes of adjustment (initial setting value) — 50Hz mode and 60Hz mode — depending upon the kind of signals (vertical
frequency 50Hz / 60Hz).
●When adjusted in 50Hz mode, 60Hz mode will be automatically set.
The setting (adjustment) using the remote control unit is made on the basis of the initial setting values.
The setting values which adjust the screen to the optimum condition can be different from the initial setting values.
[SUB MENU 2. V/C (10. H. CENTER ~ 14. V. CENTER)]
Initial setting value
Setting item Adjustment name Variable range 50Hz 60Hz
10. H. CENTER Horizontal center −16 ~ +15 −10 −10
11. V. HEIGHT Vertical height −64 ~ +63 −15 0
12. V. LIN Vertical linearity −16 ~ +15 0 0
13. V.S-CR Vertical height correction −64 ~ +63 −15 0
14. V. CENTER Vertical center 0 ~ +127 0 (Fixed) 0 (Fixed)
(to be continued)
: Do not adjust.
Screen size
Screen
size
92%
Picture size 100%
Picture
size
100%

AV-16N8
No. 5609422
Measuring
Item Test point Adjustment part
instrument
Adjustment 10. H. CENTER
of
H. CENTER
Adjustment 13. V.S-CR
of 12. V. LIN
V.S-CR &
V. LIN
Description
6. Receive a circle pattern signal.
7. Select 10. H. CENTER with the MENU akey.
8. Set the initial setting value of 10. H. CENTER with the MENU
−/ +key.
9. Adjust H. CENTER to make "A = B" with the MENU −/ +key.
●When the vertical linearity has been deteriorated remark-
ably, perform the following steps.
10. Receive a cross-hatch signal.
11. Select 13. V.S-CR with the MENU akey.
12. Set the initial setting value of 13. V.S-CR with the MENU −/ +
key.
13. Select 12. V. LIN with the MENU akey.
14. Set the initial setting value of 12. V. LIN with the MENU −/ +
key.
15. Adjust V.S-CR and V. LIN so that the spaces of each line on
TOP, CENTER and BOTTOM become uniform.
16. Make sure that the adjustment is properly done on the screen
of 60Hz mode.
17. Press the DISPLAY key twice to return to the normal screen.
[NOTE]
●When adjust in 60Hz mode, only 60Hz mode is adjust.
AB
TOP
CENTER
BOTTOM

AV-16N8
No. 56094 23
VSM PRESET ADJUSTMENT
Measuring
Item Test point Adjustment part
instrument
Setting of Remote TINT
VSM control unit COLOUR
PRESET BRIGHT
CONT.
SHARP
Description
(VSM PRESET)
1. Select 3. VSM PRESET from the SERVICE MENU.
2. Select BRIGHT with the PICTURE MODE key.
3. Adjust the MENU akey and MENU −or +key to reset the
set values of TINT ~ SHARP to the values shown in the table.
4. Respectively select the VSM PRESET mode for SOFT and
STANDARD, and make similar adjustment as in 3 above.
5. Press the DISPLAY key twice to return to the normal screen.
VSM preset
VSM mode BRIGHT STANDARD SOFT
Setting item
TINT 15 bb
bb
bbb
bb
b
SETTING VALUE
COLOUR 15 bb
bb
bbb
bb
b
SETTING VALUE
BRIGHT 15 bb
bb
bbb
bb
b
SETTING VALUE
CONT. 30 24 17
SETTING VALUE
SHARP 15 bb
bb
b10
SETTING VALUE
[Setting Values for SUB MENU 3. VSM PRESET]
BRIGHT
✽✽
✽✽
✽✽
✽✽
✽✽
SUB MENU 3.VSM PRESET
a: SELECT
− / + : OPERATE DISP : EXIT
TINT
COLOUR
BRIGHT
CONT.
SHARP
: Do not adjust.

AV-16N8
No. 5609424
PURITY MAGNETS
Long lug
Short lug
Bring the long lug over the short lug
and position them horizontally.
DEFLECTION
YOKE
WEDGE
CRT
P
4 6
P/C
MAGNETS
• P/C MAGNETS
P : PURITY MAGNET
4 : 4 POLES (convergence magnets)
6 : 6 POLES (convergence magnets)
GREEN RASTER
(FRONT VIEW)
CENTER
Fig. 1
Fig. 2
Fig. 3
PURITY, CONVERGENCE ADJUSTMENT
PURITY ADJUSTMENT
1. Demagnetize CRT with the demagnetizer.
2. Loosen the retainer screw of the deflection yoke.
3. Remove the wedges. (Fig. 1.)
4. Input a green raster signal from the signal generator, and turn
the screen to green raster.
5. Move the deflection yoke backward.
6. Bring the long lug of the purity magnets on the short lug and
position them horizontally. (Fig. 2)
7. Adjust the gap between two lugs so that the green raster will
come into the center of the screen. (Fig. 3)
8. Move the deflection yoke forward, and fix the position of the
deflection yoke so that the whole screen will become green.
9. Insert the wedge to the top side of the deflection yoke so that it
will not move.
10. Input a cross-hatch signal.
11. Verify that the screen is horizontal.
12. Input red and blue raster signals, and make sure that purity is
properly adjusted.
Note: The picture tube includes the deflection yoke and purity magnets, and purity and convergence adjustments are precisely adjusted
at the factory.

AV-16N8
No. 56094 25
(FRONT VIEW)
RED GREEN BLUE
RED
BLUE
GREEN
BLUE
RED
GREEN
GREEN REDBLUE
(FRONT VIEW)
GREEN
BLUE
RED RED
GREEN
BLUE RED
GREEN
BLUE
BLUE
GREEN
RED
(FRONT VIEW)
Fig. 1
Fig. 2
Fig. 3
STATIC CONVERGENCE ADJUSTMENT
1. Input a cross-hatch signal.
2. Using 4-pole convergence magnets, overlap the red and blue
lines in the center of the screen (Fig. 1) to turn them to magenta
(red/blue).
3. Using 6-pole convergence magnets, overlap the magenta (red/
blue) and green lines in the center of the screen to turn them to
white.
4. Repeat 2 and 3 above, and make best convergence.
DYNAMIC CONVERGENCE ADJUSTMENT
1. Move the deflection yoke up and down and overlap the lines in
the periphery. (Fig. 2)
2. Move the deflection yoke left to right and overlap the lines in the
periphery. (Fig. 3)
3. Repeat 1 and 2 above, and make best convergence.
●After adjustment, fix the wedge at the original position.
Fasten the retainer screw of the deflection yoke.
Fix the 6 magnets with glue.

AV-16N8
No. 5609426
SELF-CHECK FUNCTIONS
1. Outline
This model has self-check functions given below. When an abnormality has been detected, the SUB POWER is turned off and the ON
TIMER LED flashes to inform of the failure. An abnormality is detected by the signal input state of the control line connected to the
microcomputer.
2. Self-check items
3. Self-check indicating function
At about 3 seconds after the power is turned on, the self-check
function starts.
In the case where an abnormality has been detected within
the subsequent 2 seconds, the ON TIMER LED flashes, but
the SUB-POWER will be turned on when the elapsed time af-
ter power on reaches 5 seconds.
When an abnormality has been detected at about 5 seconds
after power on, the ON TIMER LED flashes, and then the SUB
POWER will be turned off immediately.
[ Indication by the LED ]
Item ON TIMER LED flashing intervals Priority of detection
①Over-current protection At 0.25-second intervals 1
➁CRT NECK protection At 0.5-second intervals 2
Note: In case of ①+ ➁, the item ①is indicated.
Check item
Over-current protection
CRT NECK protection
Details of detection
An over-current on the low B line
is detected.
Operation of CRT NECK protec-
tion circuit
Method of detection
The main microcomputer detects
the possible abnormality at 30-
msec.intervals and judgesthe re-
sults in every 16 time. Of the 16
times, if NG is detected more
than 9 times, it is judged that
there is an abnormality.
DITTO
State of abnormality
When an abnormality has been
detected, the SUB-POWER is
turned off. While the SUB-
POWER is being turned off, the
POWER key on the remote con-
trolunit isnot operational until the
power cord is taken out and put
in again.
DITTO
After about
3 seconds After about 5 seconds
Power on Start of
detection
Detection of
an
abnormality
SUB-
POWER
OFF
Flashing LED