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Preparation:
•  Input an all white (30 IRE) signal to the specifi ed input.
•  Adjust the white balance using the specifi ed registers.
•  Set picture mode: Single (FULL) (PRO MODE Reset)
• Color: 

Max

3

CBOF

CB OFFSET

4

CROF

CR OFFSET

3

CBOF

CB OFFSET

4

CROF

CR OFFSET

3

CBOF

CB0F (FROM VIDEO 5) + 3

4

CROF

CR0F (FROM VIDEO 5) - 4

Preparation:
•  Input a monoscope signal.
•  Set to NTSC (DRC) mode.

1.  Set to Service Mode and adjust as follows:

05 AGNG

AGING 1, AGING 2

2

02 HSIZ

Horiz Size

31

01 HPOS

Horiz Position

31

00 HBLK

Blanking Enable

0

2.  Reduce HSIZ to see sides of raster. (See Figure A)
3.  Adjust H-Center with CXA2170D-2.
4.  Adjust to the best screen position with H-CENT and write data.
5.  Restore aging, HSIZ and HBLK to original condition.

RASTER
 EDGES

RASTER

Figure A

1.  Face the picture tube in an east-west direction. (For best condition.)
2.  Input a monoscope and crosshatch signal.  
3.  Adjust the picture distortion with the two signals to balance the best 

condition between the two. 

  Use the CXA2170-D1 and -D2 adjustable data items shown.
4.  Complete V-PIN and V-CEN adjustments fi rst and adjust HPTZ to 

straighten and parallel top and bottom lines.

5.  Adjust VSCO, VLIN as necessary. 
6.  Adjust VSIZ and VPOS and write the data.
7.  Adjust for Vertical line distortion.
8.  Adjust VANG, VBOW, LANG, LBOW. 

: Keep LANG and LBOW data between 5 and 58.

9.  Finish with UCP, LCP, PPHA, PIN adjustments. 
10. Check SLIN, MPIN. Adjust for correct HSIZ and HPOS and write the 

data before changing modes.

  NOTE:  Make sure that the picture size is within specs.  Vertical size 

is 11.8 ± 0.1 sq. and horizontal size is 15.8 ± 0.1 sq.

.

Item 0.  VPOS (V-POSITION)

Item 1.  VSIZ (V-SIZE)

Item 3.  VLIN (V-LINEARITY)

Item 4.  VSCO (V S-CORRECTION)

Item 9.  HTPZ (H-TRAPEZOID)

Item 1.  HPOS (H-POSITION)

Item 2.  HSIZ (H-SIZE)

Item 5.  PIN (PIN AMP)

Item 7.  UCP (UP COR PIN COR)

Item 8.  LCP (LOW CO PIN COR)

Item 14. PPHA (PIN PHASE)

Item 15. VANG (AFC-ANGLE)

Item 16. LANG (L-ANGLE)

Item 17. VBOW (AFC-BOW)

Item 18. LBOW (L-BOW)

1.  Input a 1080i cross-hatch signal and an HD monoscope full signal 

that contains overscan markers. (From service mode, verify 1080I 
mode).

2.  If this procedure was not performed for full mode, adjust the raster 

position per Section 2-8. H Raster Center Adjustment.

3.  Adjust the geometry similar to Full DRC mode.  

Vertical size is 11.7 ± 0.1 sq. and horizontal size is 15.6 ± 0.1 sq., if 
monoscope signal is available.  Otherwise, set the Vertical size to 
91.0 ± 0.6% scan and Horizontal size as 91.0 ± 0.6% scan.

4.  Adjust HPOS as necessary.
  Note: If necessary, touch up the geometry using the data registers 

listed above for full mode. Check NTSC full mode for adjustment side 
effects because some data registers are shared between modes, in 
which case a balance must be achieved.

5.  Write the data into memory before changing modes.

1.  Input a monoscope and crosshatch signal.
2.  Set CXA2170-P4 item 26 IDSW to 4 (VC 960i).
3.  Check for vertical compressed mode distortion. 
4.  Adjust VPIN as necessary to correct upper lower horizontal line 

straightness. Adjust other registers in Full mode above as necessary, 
being careful to balance any shared data effect between modes.

5.  Repeat steps 3 and 4 for IDSW set to 3 (VC 1080i). 
6.  Write the data before changing modes.

1.  Check Normal and Zoom modes for size and position. 
2.  Optimize VPIN adjustment in Normal mode for the straightest upper 

and lower horizontal lines. For other registers, remember to check for 
shared data side effect. 

3.  Write the data before changing modes.
4.  Check Wide Zoom mode for size and position. 

Wide Zoom is a specially adjusted mode to fi t a 4:3 picture into a 
16:9 format, and is only available on wide screen models. 

5.  Set the following key registers to the data indicated: 

VSCO = 10, UVLN = 4, LVLN = 4, SLIN = 10, MPIN = 9,
then adjust the other data registers shown here for Full mode to 
straighten horizontal and vertical lines. The picture on the top and 
bottom edge is deliberately compressed vertically, and similarly the 
picture on the left and right side is expanded horizontally. 

  Note: Do not adjust horizontal and vertical linearity to make another 

Full mode. Most data registers for this mode are dedicated to Wide 
Zoom mode only so there should be no adjustment side effects to 
other modes but please confi rm this. 

6.  Write the data before changing modes.

Standard .............................................................................135.3 ± 1 VAC
Check Condition:
  AC input voltage: 120 (± 2) VAC 
Note: If using a stabilized power supply, make sure that the distortion   

factor is 3% or less. 

Setting Mode: ............................................................................ Full mode
Signal Input: ............................................................Cross-hatch of NTSC
Initial Setting: .....................................................Standard Reset condition
Confi rm Point: ............................Across CN5509 PIN 9 for B+ of D Board

1.  Using an external DC power supply, apply 5.3 ± 0.5 Vdc between 

Pin 2 of CN507 (jig connector) and ground (Pin 8); confi rm set goes to 
hold-down (main power relay click).

2.  Remove the external DC power supply.

Standard 135.3 ± 1 VAC
Check Condition:
  AC input voltage: 120 (± 2) VAC 
Note: If using a stabilized power supply, make sure that the distortion   

factor is 3% or less. 

Setting Mode: ............................................................................ Full mode
Signal Input: ............................................................Cross-hatch of NTSC
Initial Setting: .....................................................Standard Reset condition
Confi rm Point: ............................Across CN5509 PIN 9 for B+ of D Board

Standard:..........................................................................135.3  ±  1 VDC
Measurement point:
  CN5509 pin (9) for B+ of [D] board
Input Video Signal:............................................................All Black Signal
Picture level:..................................................Picture/Brightness Minimum

HV Probe:  Service can use Fluke 80K-40 or equivalent.

Standard:............................................................................32.5  ±  0.5 kV
Measurement point:............................................................Anode of CRT
Input Video Signal:............................................................All Black Signal
Picture level:..................................................Picture/Brightness Minimum

1.  Remove D board screws and carefully lift board as necessary to gain 

access to the bottom of the board.

2.  Unsolder CN5001 pin 1 to open ABL connection to A board.
  (Alternately, open A - D connector (CN509-CN5001) and carefully 

push pin 1 metal tab (ABL) up from the bottom and pull up from the 
top using long nose pliers and release it from the connector, then 
close the connector with pin 1 connection now open.)

3.  Install jumper wire from M board connection CN2304 pin 1 to CN509 

pin 1 to inject 5V to ABL line. (Alternately, use STBY 5V, IC501 Pin O 
on A board)

4.  Unsolder CN5009 pin 8 (H-prot).
5.  Open ABL pin 1 of T8001 (RHT) on D board and connect analog 

current meter.

Input Video Signal:............................................................All Black Signal
Picture level:..................................................Picture/Brightness Minimum

1. Confi rm ABL current which should be approximately 0.160mA.
2.  Short across C8002, C8021, and C8052.
3.  Turn off the set and install precision VR1 jig (a multi turn pot initially 

set to 100K) to IC8005 pin 1 (It’s the unmarked IC8005 pin on PWB A 
side, neither K nor A.) and GND (C8076 -).

4.  Restore power and adjust HV to obtain 36.4 ± 0.15kV by precision 

VR1 jig.

  Note: If the picture turns bright red or other color and the set shuts 

down, place a 10 M

Ω resistor on the CX board between G2 and E2 

pins on the socket. Confi rm G2 adjustment before returning set to 
production.

5.  Remove short from C8002 and confi rm that hold down activates.
6.  Short C8002 again and confi rm that HV recovers.
7.  Re-adjust HV to obtain 33.5 ± 0.2 kV by precision VR1 jig.
8.  Remove short from C8002 and C8021 and C8052.
9. Confi rm that hold down does not activate.
Note:

 Remove the 10 M

Ω resistor, if installed in step D above