6523-2

IMPORTANT SAFETY NOTICE

Proper service and repair is important to the safe, relia- ble operation of all NAPCEC Equipment. The service procedures recommended by NAPCEC and described in this service manual are effective methods of performing service operations. Some of these service operations require the use of tools specially designed for the pur- pose. The special tools should be used when and as recommended.

It is important to note that this manual contains various CAUTIONS and NOTICES which should be carefully read in order to minimize the risk of personal injury to service personnel. The possibility exists that improper service methods may damage the equipment. It also Is important to understand that these CAUTIONS and NOTICES ARE NOT EXHAUSTIVE. NAPCEC could not possibly know, evaluate and advise the service trade of all conceivable ways in which service might be done or of the possible hazardous consequences of each way. Consequently, NAPCEC has not undertaken any such broad evaluation. Accordingly, a servicer who uses a service procedure or tool which is not recommended by NAPCEC must first satisfy himself thoroughly that neither his safety nor the safe operation of the equip- ment will be jeopardized by the service method selected.

WARNING

Critical components having special safety characteristics

are identified with an S by the Ref. No. in the parts list and

enclosed within a broken line* along with the safety symbol on the schematics or exploded views.

Use of substitute replacement parts which do not have the same specified safety characteristics may create shock, fire, or other hazards.

Under no circumstances should the original design be modi- fied or altered without written permission from the N.A.P. Consumer Electronics Corp. NAPCEC assumes no liability, express orimplied, arising out of any unauthorized modifica- tion of design. Servicer assumes all liability.

* Broken LTC: sua < eae s ee 6 eee «

INDEX Description Page POWSUNGAL PrOCCOUICS sx.5-eh-00b od ah ee hrs Se eR Rae oe oe bE oe week 4-7 GR F.C. BOare (COMPpONENE SIME ViGW seed 555 4s CRONE SOC RG WSO REE EROS Ma SEE OM OO ORS LZ WYO ICOMINIECT. DIA IFaIN ven 4 oe eh 6 ee HSER OE TEES Oe POA SOE eee RUE Oe AS eo ewes ij interface P.C. Board (component Side VIEW) «6 60 kde be eS Re be rh eee EW OE aw 14, 22 Viaitt:P.G, boda (COMmponent SiGe VIEW) nwack ais wk pc he weed nae ele bare hole ae ee ew eat WS ae 9,17 Power oupply F.C. Board (component Side VIEW) .56xa6-5 256500 o4o5e 5 kee do ween ges ends eks 15, 16 PEUISCCRIGIN Fale WISE o6\ ovncdea Fe bia ole evan Bie ee OE de CEG Re Sew Ree EEE KE RAREESS 23-25 BTCC Oe Sir sowie bes ee BO oe aa he St oe ee eek bee Oe Oe Pewee a eeaw see bate eek 2,26 SCENIC WIBOIAI. 1265539 e CONES ban bok ace doe CHEE ca eee eee eee 11-13, 19-21 SOC NOLES oi yao hw abe deed ee had Ae Te eRe we ER Re hala wee a 10; T8 DCC EA NOMS 4.x.5-bi 6 ow eee KerOs hE Pa S Oke S Rade BA eed een ee hire eek oe heed FORCE E a Oe 2 UV AVETOVING 1ictnols-u eur oa Odd DD a ARR RT. COAL Eee CARE eRe Car Re ane 8 SPECIFICATIONS

CRT size 13 inch diagonal

CRT Deflection Angle 90 degrees

CRT Mask Pitch:

-8CM505/CM8505/CM8705 0.65mm

-8CM515/8CM542/CM8562/CM87/62 0.42mm

-8CM643 0.39mm

CRT Light Transmission:

-CM8505/CM8705 56%

-8CM505/8CM515/8CM643 46%

-8CM542/CM8562/CM8762 46%

Power Requirements 115Vac/60Hz

Power Consumption 75W max.

Degaussing Automatic (when

switching on set) Video Input Signals: CM8505/CM8705/8CM505/8CM515/8CM643 RGB anolog 0.7, composite sync, 6 pin connector Composite video 1Vp-p, negative sync, RCA connector RGB-1 TTL, separate horiz. and vert. sync, 8 pin connector

Horizontal Scanning Frequency 15734Hz Horizontal Frequency Drift 1% Max. Horizontal Flyback Time 12uS max. Horizontal Blanking Time 12uS max. Vertical Scanning Frequency 47-62.5Hz Vertical Frequency Drift 1% max. Vertical Flyback Time 0.95mS max. Vertical Blanking Time (21H) 1.33mS RGB Amp Bandwidth 8MHz min. RGB Amp Bandwidth (8CM643) 15MHz min. Resolution:

-Vertical 240 lines -CM8505/CM8705 Horizontal 390 dots -8CM505 Horizontal 390 dots -8CM515/CM8562 Horizontal 640 dots -8CM542/8CM643 690 dots Character Display:

-CM8505/CM8705 1000 characters (40 x 25) -8CM505 1600 characters (64 x 25)

-8CM515/8CM542/CM8562/CM8762/8CM643 2000 characters (80 x 25)

Overshoot/Undershoot 5% Max. Black Level Shift 3% max. Audio Input Signal 150mV eff. Audio Input Impedance 10k Audio Output Power 1W a 5% distortion Audio Frequency Range 300Hz - 7kHz Audio S/N Ratio 40dB min. Operating Humidity Range less than 80% Dimensions (HxWxD) 320x350x38 7mm

* Specifications subject to change without notice.

6523-3

6523-4

ADJUSTMENT PROCEDURES

Adjustment Notes:

unless otherwise specified:

1. Anisolation transformer must be used when servic- ing this unit.

2. Line voltage maintained at 120Vac, 60Hz.

3. The unit should be allowed to warm up for at least 30 minutes prior to making any adjustments.

4. Voltages measured with repect to ground.

5. Signal injection point is the Video In Jack.

496 Pincushion Adjustment (8CM643 only)

Inject a cross-hatch pattern and set Brightness Con- trol (R598) and Contract Control (R585) to their mechanical centers.

2. Adjust R496 so that 14 blocks correspond to a width of 26cm.

3. Horizontal Amplitude and Centering Adjustment

4. Vertical Amplitude and Centering Adjustment

R598 Sub-Brightness Control Adjustment

(8CM643 only)

(Dual Trace Oscilloscope required)

Inject a signal with a white raster to input connector.

Adjust G2 (R727) and Contrast Control to minimum.

Adjust Brightness Control to mechanical center.

Connect a DC coupled probe from Channel A of the

oscilloscope to pin 1 of IC502.

Connect a DC coupled probe from Channel B of the

oscilloscope to the emitter of TS641.

Adjust the Sub-Brightness (R598) to place the top of

the video Signal (Channel A) at the same voltage

level as the emitter of TS641 (Channel B).

6. Adjust Red (R705), Green (R705) and Blue (R706) cut off controls to set pins 6, 8, and 11 of Picture Tube at 100 volts each.

7. Advance G2 control (R727) until screen just begins to illuminate.

8. If the electron guns of the CRT are balanced, you should get a dull gray raster. However, if one color is more predominant than the others, adjust the cut- off controls of other 2 corresponding guns as required to obtain a gray raster.

a >

Power Supply Adjustment

With the unit off, set the Volume Control (R316), Contrast Control (R585), and Brightness Control (R589) to minimum.

Preset R114 to mechanical center.

unit. Adjust R114 for a reading of 125V on the meter.

Horizontal Synchronization Adjustment

1. Inject a cross-hatch pattern signal and short C434. 2. Adjust the horizontal sync with R437.

3. Remove the short from C434.

Vertical Synchronization Adjustment

1. Inject a cross-hatch pattern signal and short C434. 2. Adjust the vertical syne with R331.

3. Remove the short C434.

Horizontal Amplitude and Centering Adjustment

1. Inject a cross-hatch pattern signal and set the Brightness Control (R589) and Contrast Control (R585) to their mechanical centers.

2. Adjust R485 sothat 14 blocks correspond toa width of 26cm.

3. Adjust R453 to center display horizontally.

Connect a voltmeter across C494 and turn on the.

Vertical Amplitude and Centering Adjustment

1. Inject a cross-hatch pattern and set the Brightness Control (R585) to their mechanical centers.

2. Adjust R353 so that 10 blocks correspond to a height of 18.5cm.

3. Adjust R364 to center the display vertically.

Chrominance Adjustment (Note: pin nos. in parenthesis indicate alternate 16-pin IC.)

1. Inject a color bar pattern signal and adjust the Secondary controls for normal viewing. Place SK3 (not used in CM8562, CM8762, 8CM542) in the off position.

2. Connect an oscilloscope to pin 15 of IC502 and adjust $533 for minimum amplitude of the chromi- nance signal that is presrnt on the various bright- ness steps of the luminance signal.

3. Short pins 9 (3) and 17 (11) of IC501.

4. Adjust C567 to minimize the chroma as visible on the screen.

5. Remove the shorting clips from pins.

Comb Filter Adjustment (CM8505/CM8705/8CM505/8CM515/8CM643 ihe Inject a color bar pattern signal and place the Comb Filter Switch (SK3 in the on position).

2. Connect an oscilloscope to the emitter of TS531 and adjust R523 and S515 for minimum amplitude of the chrominance signal. For optimum performance, repeat the adjustment.

Focus Adjustment

1. Inject a cross-hatch pattern signal and set the Brightness Control (R589) to minimum and the Con- trast control (R585) to maximum.

2. Adjust R732 for optimum focus.

X-Ray Protection Circuit Adjustment

1. Inject a color bar pattern signal and set the Bright- ness and Contrast Controls to minimum.

2. Connect a voltmeter between the wiper of R457 and ground.

3. Adjust R457 for a reading of 6.9V.

Note: The following adjustments need only be per- formed if the CRT has been replaced. Minor corrections for purity and convergence may be accomplished through the use of the Purity and Convergence Assem- bly located on the neck of the CRT.

Color Purity Adjustment (Refer to Figure 1)

1. Loosen the yoke clamp screw and slide the yoke back away from the rubber wedges.

2. Remove the rubber wedges (G) and slide the yoke forward until it rests firmly against the bell of the GRE

3. Tighten the yoke clamp screw slightly so that the yoke can still be moved with some friction.

4. Place the multi-pole Purity and Convergence Assembly in the position shown tn Figure 1.

5. Tighten screw (A) and turn securing ring (B)counter- clockwise. Position the unit so that it faces in an East/West direction and degauss the instrument.

6. Turnon the power and inject a-cross-hatch pattern signal. Allow a 10 minute warm-up period.

7. Roughly adjust the static convergence, using tabs C and D.

8. Set the Vertical Centering Control (R364) to its mechanical center. Disconnect R723 and R/24 to turn off the green and blue guns.

6523-5

ADJUSTMENT PROCEDURES (Continued)

9. Adjust the two-pole purity rings (E) to center the red vertical and horizontal lines.

10. Inject a white pattern signal and move the deflec- tion yoke to obtain a full red raster.

11. Turn on the green and blue guns by reconnecting R723 and R724. If a uniformly white raster does not appear, minor adjustments may be made by adjust- ing the purity rings (E).

12. Inject a cross-hatch pattern signal to ensure that the yoke is not tilted. If necessary, rotate the yoke to obtain a level raster.

13. Tighten screw F and adjust R364 for proper vertical

centering. Proceed to the Static Convergence

Adjustment.

Figure 1

Static Convergence Adjustment

1. Inject a crosshatch pattern signal and allow a 10 minute warm-up period.

2. Turnoff the green gun by disconnecting R723. Turn locking ring (B) counterclockwise.

3. Slowly spread, and if necessary, rotate the 4-pole magnetic rings (C) to converge red and blue lines at the center of the screen.

4. Reconnect R723 to turn on the green gun and disconnect R724 to turn off the blue gun.

5. Slowly spread, and if necessary, rotate the 6-pole magnetic rings (D) to converge the red and green lines at the center of the screen.

6. Reconnect R724 to turn on the blue gun.

7. For optimum performance, repeat steps 1 through 6. Proceed to the Dynamic Convergence Adjust- ment.

Dynamic Convergence Adjustment

1. Inject a cross-hatch pattern signal and turn off the green gun by disconnecting R723.

2. Tilt the yoke up and down to acheive the best con- vergence of the red and blue vertical lines at the 6 and 12 o'clock and the red and blue horizontal lines at the 3 and 9 o'clock positions (see Figure 2).

3. When the correct position has been found, place a rubber wedge between the CRT. If the yoke is tilted up, place wedge 1 as shown in Figure 3a; if it is tilted down, place wedge 1 as shown in Figure 4a.

4. Tilt the yoke to the left and right to find the point of best possible convergence of the red and blue lines

at the edges, top, and bottom of the screen as shown in Figure 5.

5. When the correct position is located, place wedges 2 and 3 as shown in Figure 3b or 4b.

6. Remove wedge 1 and place it in the final position as shown in Figure 3c or 4c. Reconnect resistor R723 to turn on the green gun.

Figure 2 — Tilt yoke up or down to converge Red and Blue vertical lines at 6 and 12 o'clock positions, and Blue horizontal lines at 3 and 9 o'clock positions.

® A_~ oo. tex ts 22 og we Wh ‘Ya c ee. ac Sar re > a ne eee ak Se Figure 3a Figure 3b ~—- Figure 3c ©

—— {

Seale . on Ls . aod &

ae oa ae

Figure 4a Figure 4c

Figure 5 - Tilt yoke left or right to converge Red and Blue horizontal lines at the 6 and 12 o'clock positions, and Red and Blue vertical lines at the 3 and 9 oclock positions.

Note: A computer delivering RGB TTL output (IBM or Apple) should be used to properly test the RGB circuitry. However, if a computer is not available, the following procedure may be used.

EXCEPTION: CM8562/CM8762/8CM542 does not accept Analog RGB or X-RGB signals.

6523-6

ADJUSTMENT PROCEDURES (Continued)

RGB INTERFACE P.C. BOARD CHECKS FOR ALL

MODELS (Except CM8562/CM8762/8CM542) Late Production RGB Interface models are IBM Compat- ible only after Feb. 87.

Early Production models accept Apple (X-RGB) or IBM (RGB-1) prior to Feb. 2, 1987.

The purpose of this board is to accept RGB TTL signal inputs (RGB—I or X-RGB) and develope the R, G, and B Signals in the monitor. By grounding the control input (Pin 1 of 8 pin Din Plug) the interface circuit will decode X-RGB to equal RGB-| signals in the monitor.

Interface P.C. Board Check

1. If either Apple (X-RGB) or IBM (RGB-l) signals are available as a TTL input the interface operation in the other signal mode may be checked. By ground- ing the control input on each color the other mode will appear. Pins 2, 3,4, and 5 the 8 Pin Din Jack are high level when open. Use the cross reference chart for this cross color check.

2. To confirn proper operation of the RGB Interface Board, refer to the following truth table and ground the pins as shown. A voltmeter may be used to determine whether the output levels are high (1) or low (O). (Refer to schematic for pin nos.).

3. Another quick check may be done using a sine or Square wave generator. A 1 to 3 kHz square wave (2Vp-p) may be injected into the pins of the DIN jack in the truth table. Color flashes should be visible on the screen which correspond to the pin or pins con- nected to the signal generator. Pin 2 should give red flashes, pin 3 green flashes, etc. when in the IBM mode. The colors will vary when pin 1 is grounded along with any of the others because the Apple colors are not the same as the IBM colors.

IBM TRUTH TABLE

INPUTS OUTPUTS

DIN PLUG PINS (B) (G) (R)

1C272 PINS 1C271 PINS

IBM is a registered trademark of International

Business Machines

APPLE TRUTH TABLE

INPUTS OUTPUTS

DIN PLUG PINS

1C272 PINS 1C271 PINS

* IBM/APPLE switching line. (open=IBM; ground=APPLE)

RGB-TTL INPUTS (8 PIN DIN) Color Decoding Chart Levels shown are with monitor driven by computer.

Pin APPLE X-RGB 5432 #4#IBMRGB-I BLACK 0000 - £BLACK MAGENTA Oo) RED DARK BLUE 0-0: 7.0: “GREER PURPLE 0 0 ey Bae BROWN DARK GREEN O-}0O°O [Bie GREY 1 2 Tis Ws ae MAGENTA MIDDLE BLUE O21 1.0: oCYAN LIGHT BLUE Oo ce. 4 WHITE BROWN 10° O°0> -GRET ORANGE Tee 4 LIGHT RED GREY 2 1010 #LIGHT GREEN PINK iar Sis a LIGHT YELLOW GREEN 11 OD LIGHT? BLUE YELLOW phe (ae 2 as LIGHT MAGENTA AQUA 1110 #4LIGHT CYAN WHITE fae INTENSIFIED WHITE TTL Levels

Low (O) = Zero to .8 volts High (1) = 2.4 to 5 volts

Pin 1 is Apple/IBM Control Line Low (0) = Apple, High (1) =!BM Colors

Apple is a registered trademark of Apple Computers

6523-7 6523-8

ADJUSTMENT PROCEDURES (Continued)

RGB 8 and 6 Pin DIN Sockets

PIN ASSIGNMENTS

TTL INPUT ANALOG 1 8 PIN 6 PIN Oe : PIN NO. SIGNAL SIGNAL oO © at IBM Open/Apple Gnd. Green © ® 2 Red Horiz. Sync 3 Green Ground TTL 4 Blue Red ia 2 Intensity Blue 6 Ground Vert. Sync ® f Horiz. Sync (2) © (4)

8 Vert. Sync a) ©

When using these sockets before connecting the equipment, place the RGB/Composite Switch in the RGB position. *ANALOG

INPUT *Not used in CM8562/CM8762/8CM542

INTERCONNECT DIAGRAM

Note: To Remove Power Board Depress Locking Clip Located on Bottom of Cabinet Beneath Power Board.

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WAVEFORM NOTES UNLESS OTHERWISE SPECIFIED:

1. 2.

WAVEFORMS TAKEN UNDER THE CONDITIONS SPECI- FIED THE SCHEMATIC NOTES.

SWEEP/TIME CM SETTINGS ARE SHOWN JUST BELOW PHOTOS. ALL PHOTOS WERE TAKEN WITH THE SWEEP TIME CONTROLS IN THE CALIBRATED POSITION. HORIZONTAL POSITIONING OF THE WAVEFORMS WAS ADJUSTED FOR MAXIMUM CLARITY.

6523-9

38 361 D12

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NOTE:

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6523-10

INTERFACE SCHEMATIC DIAGRAM (Late Production Version)

~—

SCHEMATICS NOTES: UNLESS OTHERWISE SPECIFIED:

ALL VOLTAGES AND WAVEFORMS TAKEN UNDER THE FOL-

LOWING CONDITIONS:

- LINE VOLTAGE MAINTAINED AT 120VAC, 60Hz VIA AN ISO-

LATION TRANSFORMER.

CUSTOMER CONTROLS SET AS FOLLOWS:

- VOLUME CONTROL (R316) SET TO MINIMUM.

- COLOR CONTROL (R581) SET FOR 8.75VDC WIPER TO GROUND.

- CONTRAST CONTROL (R585) SET FOR 8.7VDC WIPER TO GROUND.

- BRIGHTNESS CONTROL (R589) SET FOR 5VDC WIPER TO GROUND.

- HUE CONTROL (R565) SET FOR 6VDC WIPER TO GROUND.

- SK2 IN CVBS POSITION.

- SK3, SK4 & SK5 OFF.

E.P. REFERS TO EARLY PRODUCTION L.P. REFERS TO LATE PRODUCTION

14IC252

IC252C 10

TTL INTERFACE

R279 4.7K

TS28I CB 4S HoRIZ. YY) \pog L281 PULSE 3.3K

2. VOLTAGES AND WAVEFORMS WERE TAKEN USING A 10 BAR GATED RAINBOW PATTERN SIGNAL SET TO DELIVER CHROMA BARS OF .5Vp-p AT THE VIDEO IN JACK.

3. ALLVOLTAGES ARE POSITIVE DC WITH RESPECT TO GROUND, BE IT THE ISOLATED (SIGNAL) GROUND OR THE AC (HOT) GROUND WHICHEVER IS PRESENT IN THAT AREA OF' CIRCUITRY.

VOLTAGES MAY VARY DUE TO NORMAL PRODUCTION TOL- ERENCES. VOLTAGE SOURCES ARE ALSO NOMINAL.

5. RESISTORS ARE ALL 5%, “%W, CARBON FILM EXCEPT FOR SOME UNIQUE PARTS. REFER TO REPLACEMENT PARTS LIST.

6. CAPACITOR VALUES ARE IN MICROFARADS & PICOFARADS. REFER TO SCHEMATIC DIAGRAM FOR VALUES AND VOLT- AGES EXCEPT FOR UNIQUE PARTS SHOWN IN REPLACEMENT PARTS LIST.

WARNING

Critical components having special safety characteristics are identified with an S by the Ref. No. in the parts list and enclosed within a broken line* along with the safety symbol

on the schematics or exploded views.

Use of substitute replacement parts which do not have the same specified safety characteristics may create shock, fire, or other hazards.

* Broken line: mmm «

(CM8505/CM8562/CM8705/CM8762/ 8CM505/8CM515/8CM542/8CM643)

6523-11

NAP 6523

CAUTION: USE A SEPARATE ISOLATION TRANSFORMER v ATES NOY GROUND:

FOR THIS UNIT WHEN SERVICING.

+120

TS552

W.7V 0 COMPOSITE TS514 R518 CVBS 7.1V 820 VIDEO

R517, 820

NOTE: R515) E.P.= EARLY PRODUCTION IK L.P.=LATE PRODUCTION

R404 ~ R204 jQ0# et 470 390 A IV &, TS2I! R201 R207 100 390 1.6V + R205 + +11B 390 ry TS2i2 IV C205 ®, +1IA +i R202 100p R208 wy 100 16V 390 6V R213 pee + R206 = +118 470 Iv 90 + TS213 (yr TS219 coos | VAD ev ed rv R203 100 R209 roc------- I6V 390 1.6V R219 | FORL.P.VERSION ! 1.5K | SEEPAGEIO. | + = +11B t R229 URncinge ee aa Wie, | eee came. as 33K NP veRsion — 3 IC271/6F o; C-TS228 = (273

DECODER OUTPUT DRIVER

+5V

R299 4.7K

0022

CS pesereencshceiiohatseeacorcag mle esiiaiieeetsee

(CM8505/CM8562/CM8705/CM8762/ 8CM505/8CM515/8CM542/8CM643)

6.3V ‘* R52

—L INDICATES ISOLATED SIGNAL GROUND.

+12D ss ie R554 IK 63V 63V 5.7V é SHARPNESS CONTROL ey R553 C555 150E.P. 27P | 3300 P 63V $555 270K|L.P TS53I = or) R532 R534 R535 p 5.7V 470 560 S534 330 $536 : R531 7 bl C535 C536 R536| C544 125V : = 120P a IK | EP 56P 6802 22y + sh 63V 16V 1$533 2 oe ; | -4 i + | ! | R533 470 , | +A til | C526 , a a eB = = | Ty) tszir ae +A 41 VN? 7y i00V l R2I7 R2i2 "NV 1.5K TY) ts2i8 * cae av be 7 loov — ce tgtoeaoaapndte eee hang alta R218 ao 1.5K cals ioov C516 re R516 ee ee +12B +12B +128

1.2K R289

IC273/4A 680

Slt Sa aii cpr e L.P. TO PINS OFFLYBACK OE Ee ee

ae Fe aan pace eee eee ee 5 | NOTE: E.R MODELS HAD C136, 47)P | | IN PLACE OF RI36 & SI36 E

Rl2i¢ R120 390 180 L.P

TS12I

JEP R127 IL.P.,IOOV 3.9K 27

R122 cl22 120 Ip 100V V/

nS era

23-11 6523-12

8CM505/8CM515/8CM643/CM8505/CM8705 SCHEMATIC DIAGRAM NOTE: IC501 Alternate 16 Pin IC, see Insert page 18

ROUND.

SEE INSERT ON PAGE I8

R550 R561 IK 1.5K @ +12c 26 12 I 13 10 S C557 022 R557 CONT. BURST */MATRIX sae L ae a its oe eels

R563,5.1K C564

+12C — .33 R564$ 63V C567 I5K 10K C5637 7 a7P C5657F ) R567 + Wes 022 1. £10k

| | ! | | | | | ] | | | | | | | ! | | | | | | | | | | | |

20 [23 J22 ai \ J R591 R592 593 R594 5.1K P 12K ae 20 LP IIK #12 $12 +12 +12 ¥0592 R586 D593 150K ~ R589 = lOK R588 BRIGHTNESS 022 ra7s/ra7e =| 63V IRRET

NOTE: 8CM643 ONLY R598= EARLY PRODUCTION JUMPER

R438 BOK R436 R443 R598=LATE PRODUCTION IOK POT 1 +12 8.2K HORIZ. SYNC 8.2K | +| 2B +128 +128 +12B +12 +12 {VCR Radi = TS439 5.6K 4 R413 R416 R439 i 3.3K s 27K 47K 6v(.5V) 3.5V_| . 1% 2 i i | R44 NS C436 es 1 220K C439 T ; 4 CR 022 IOOV 0412 GATE i ae = = = 13

+26 + R344 220K

R331 47K VERT. SYNC R345 0346 G & i C345|+ R332 C331 ee xt wae tet | & +5 L.P VERSION = - + R457 CHANGES TO 47K | : 1} 13}4.5V loll.ev__5

R562

| — | : NM | i ! eae

\ 4 ie . Mt awe PULSE oun

R512 C561} +1C562 | (19)

| : col aera 50HZ 0-2 ie |

= F a7y. I6V 22)

+12B 3/5.5V 9 HIV +i (20) ede 9335 NG 390K L)TS233 1, 0e95

12 I R343 47K

B2N$ 0227 Ti00p T [iev

R337 0337 22K — +IIA O6v R215 C338 6.8K I TS228 +11B 1O0V caiatl, poigs thiczie R342 tok C341 10Oy | 2.2K rh y 3.3K vor i 16 | 1 iv 4 LINEARITY +!O0V

NAP 6523

6523-12 6523-13

(Parts List - Pgs. 23, 24, 25)

| ! si CA |

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-2iV

+125 +125

84.7V $722 +12 R707 ®, R728 2.2K Navy TS7II 30) 1.5K = me +125 +125 wee 4.7K IK 0593 il R607$ RG6IT +12 : 8 +12 +12 +12 ee a a ce a te ae a ce et a mir a ON idee se ee | ONLY R633s «R635 R641 ODUCTION JUMPER 3K 330 + 1S635 4.7K DUCTION IOK POT TS633 frr\, TS641)3.5v sf 4.2V ‘a Ss | + Na C634 R634 , bao 1 1.8K OK ! = = | | R636$ 22y 022 | 680 I6V 63V R469 | 2 | : a 3 +125 | UCTION | ii nian | 022 | 250V | ~ | r= —67) | | TS467_ |25V, 2 | l -IV > 70 ¥*.68 D467 | L-—--4 R466 ti) @ |470P |.0082 ro S472 iM 68 a | i iil A l ee 10OV C468 D468 $473 R472 R482 R48l @.022pFl ° ! IK 47K 47K 4y | | e | | | +26 +26 | | R344 | R346 : 220K $4.7 | S638 +] c638 | C484 100p +] C346 _'eg + 470 1 40V ) D346 o0n 4470p +26 +26 “Roe2s ~~ 500V C485 = BOK. a | 15K % HORIZ. PULSE $1 .22h F R485 ra7g 7] arm " ase B363 | L.P A TTL INTERFACE , 140V Ck ooK | | + = = C331 #10 23) pal 330 2.2K L—-—_-~—_—~—~- : SIZE ad 4 I6V 20.5V CONT. | ioov L'SY 1 75v, UA a a apes ON ss ea aah h asec ice len el inh Ses we ad ea +) 5V ~~ 10/1. 8V_5i255v 7] 560 (Sy 20v TS367 - 4 | I 1/@ a ee oP 6 R364 | l SHAPER urpur] Ror. I5V lOK a 4A 305 VERT. an 2K ENTERING \) 1 {1 SH: 0 ee &; 5.1v] TS368 ||| IM3 =" iii | a 0325 | R302 + eens ee R368 $R365 1000 " ad sek | | COMPOSITE sa 343 He ae 7K 22) . “ i |! CVBS ILISV 323 eet AUDIO R316 R3I7 u Se ee so 100K lOK l6V M4 | OUTPUT | _{7.5V 36 R337 ~~~! +] c497 —_L.P VERSIONS | aNd >) OK 22K 0537 | Ti | C322 | 163V | | 323 = loOVv 8], 9 l0OV or Sees ee ane 2 C317 : R322 : 470P 3 2M4 R361 R32\ 3.3 | 100V sep 63V [ BS 100K L C341 L.P + — = = + ih C361 lov = 47y

6523-15

6523-14

8CM505/8CM515/8CM643/CM8505/CM8705 RGB INTERFACE P.C. BOARD

(Early Production Version) (viewed from component side)

1108 TTL-INTERFACE /INTERFACE - TTL

38 670 Al2

(Late Production Versions)

(viewed from component side)

INTERFACE P.C. BOARD

) GED CeCe ee

TE! J ‘oleuU U UD UU UL le oe

OUTPUT INPUT

39 846 Bi2

6523-15

POWER SUPPLY P.C. BOARD (Late Production Version)

(viewed from component side)

cole |ezz Bez LOH #———~——1 (980€ EOL BELE

z g << oo,

C102 104

< woe

‘ i i t i l | | l |

T =H Le

: 0} R128 27 ee R125 D121 = rt Ss 68 E | | —) 123

C122

a Qo | we be a

wl] wo p>: MB: ee

HLYV3 LOH @a-——————— = ——— — —

39 984 C12

6523-16

POWER SUPPLY P.C. BOARD (Early Production Version)

(viewed from component side)

| . | | |

__ST90e €0r Bere

38 360 C12(547)

SC [esis

[27

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ory

yw vanes! ag KG —Pt 0113 —f{-— 3 ou L19

6523-17

8CM542/CM8562/CM8762 MAIN P.C. BOARD (viewed from component side)

NOTE: When IC501 has 16 Pin IC the following parts are not used; R550, R559, R561 & C568

eat

SK4 GREEN Sk2

8238 273:31486-2

, PLES: ; ; B26

e126 a2 S25

ar BAD & ‘ @ : Bilal ls $ 1 = miko ids ee ve Nn >. ie) et so o_o 3 CHE6 ee g2il 4 Be - a oe e ie aS Pe é 7 ee $ ak > SORES occamem MO as 1 » C54 srs Noo RBM woe ee SD en! : 2 RBS 2 a sree —— prt ro om a $636 cor) —ft- : R535 ©

C4)

2554

“HOSOE £01 Sete.

Pe R207. ie 8206

Ame, Zosdy

aLare 769d me

‘ a. rm Ww eoeet

: 2099

1098

af jos

o| la

Q TY] |o o a vt

Ais Ak z199 wise wee 234 Deo eae . 238 we ae SD eee | 8199.

£.8 .. BAF fey

6/29 t giz £425

ee SERS Se es

SC Lt

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R408. ™ :

9273 |

iu ‘

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|. VIDEO —- AUDIO TTL-RGB — =i °° eee « cee © oes wal seems al c= |= «ae @ a © ems oes oo cee oes oo comme © oe oo =e © Gee © queens © queers © Gueeeem © quae © eee © eee

38 361 012

6523-18

IC501 ALTERNATE 16 PIN IC

& 0 T

5 2.5V

UTPU ' aed 339 AUTO hae URST

C570

Tol

+12C 71L8BV 4

TO PIN I70F IC502

C557

C556 022 R557

¢ 63V 220 5 — Bat B MATRIX DEMOD. R555 C559 470K 022 Re COL = 28V = al ee To, mee E al Ea > ADMINIS OF teed

14 5.7V aor == 716 MHz 63V R563,5.1K C564 2C Jo R564s 63V lOK 656377 sea C565 oe UST ok. Ze 1. ol TO = £00N - 7 ne C55I TO SANDCASTLE

SCHEMATIC NOTES UNLESS OTHERWISE SPECIFIED:

+12

R568 -5 TO PIN 15 OF C502 82K R565

R566 I5K oe TO PIN 10 OF 1¢502 Wm

we an) TO R440

1. ALL VOLTAGES AND WAVEFORMS TAKEN UNDER THE FOL- 2. VOLTAGES AND WAVEFORMS WERE TAKEN USING A 10 BAR LOWING CONDITIONS: GATED RAINBOW PATTERN SIGNAL SET TO DELIVER - LINE VOLTAGE MAINTAINED AT 120VAC, 60Hz VIA AN ISO- CHROMA BARS OF .5Vp-p AT THE VIDEO IN JACK.

LATION TRANSFORMER. 3. ALLVOLTAGES ARE POSITIVE DC WITH RESPECT TO GROUND, CUSTOMER CONTROLS SET AS FOLLOWS: BE IT THE ISOLATED (SIGNAL) GROUND OR THE AC (HOT) - VOLUME CONTROL (R316) SET TO MINIMUM. GROUND WHICHEVER IS PRESENT IN THAT AREA OF - COLOR CONTROL (R581) SET FOR 8.75VDC WIPER TO CIRCUITRY.

GROUND. 4. VOLTAGES MAY VARY DUE TO NORMAL PRODUCTION TOL- - CONTRAST CONTROL (R585) SET FOR 8.7VDC WIPER TO ERENCES. VOLTAGE SOURCES ARE ALSO NOMINAL.

GROUND. 5. RESISTORS ARE ALL 5%, %W, CARBON FILM EXCEPT FOR - BRIGHTNESS CONTROL (R589) SET FOR 5VDC WIPER TO SOME UNIQUE PARTS. REFER TO REPLACEMENT PARTS LIST.

GROUND. 6. CAPACITOR VALUES ARE IN MICROFARADS & PICOFARADS. - HUE CONTROL (R565) SET FOR 6VDC WIPER TO GROUND. REFER TO SCHEMATIC DIAGRAM FOR VALUES AND VOLT- - SK2 IN CVBS POSITION. AGES EXCEPT FOR UNIQUE PARTS SHOWN IN REPLACEMENT - SK3, SK4 & SK5 OFF. PARTS LIST. E.P. REFERS TO EARLY PRODUCTION L.P. REFERS TO LATE PRODUCTION

WARNING

Critical components having special safety characteristics are identified with an S by the Ref. No. in the parts list and enclosed within a broken line* along with the safety symbol A on the schematics or exploded views.

Use of substitute replacement parts which do not have the same specified safety characteristics may create shock, fire, or other hazards.

* Broken line: cuss 0 qumwms 0 comm 0 cum o