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QSC CX Series, Service Manual

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QSC CX Series Service Manual Download Page 25

CX Series

6. Defective gain control

l 

“RINGING’ SOUND WITH NO INPUT TO AMPLIFIER

1. C518, C519, C523 open or wrong value. (CX4/T) C505, C516.

2. R541, R542, R538, R547 open or wrong value. (CX4/T) R523, R524, R502.
3. Defective op amp U503. (CX4/T) U501

4. Unstable driver transistors (Q501, Q502), or output transistors (Q505 - Q510). (CX4/T) drivers

Q503, Q504, and outputs Q5

00

Q502 & 

l 

OUTPUT COLLAPSES INTO A LOAD

1. D519, D520, R548 wrong value or open. (CX4

/

T) D509, D511, R518.

2. Misadjusted current limits (VR502, VR503). (CX4/T) R513, R514.
3. Defective op amp U503. (CX4/T) U501.

4

.

 R501, R502 wrong value. (CX4/T) R516, R517.

l 

VOLTAGE RAILS OK WITHOUT SIGNAL 

(Collapses

wit

signa/)

1. C525, C526 leaky or not holding a charge. (CX4/T) C506, C507.

2. Check for capacitance value of C520.

l 

AMPLIFIER GETS TOO HOT WITHOUT LOAD

1. Bias trimpot (VR501) misadjusted, opened or burned. (CX4/T) R512.

2. Incorrect bias diodes (D505, 506 should be 1 N4934). (CX4/T) D505, D506.

3. R517, R518 open or has drifted in value. (CX4/T) R504, R527.
4. Defective op amp U503. (CX4

/

T) U501.

l 

ONE CHANNEL CLIPS PREMATURELY

1. R517 or R518 may be open or drifted in value. (CX4/T) R504, R528.

2. Misadjusted current limits (VR502, VR503). (CX4/T) R514, R515.

3. Defective zener D511, D514. (CX4/T) 

 D506.

4. Check for open R512, R522, R539, R546. (CX4/T) R513, R525

,

 R503, R526.

5. 680 ohm chargeback resistor R548 may be open. (CX4/T) R518.

l 

GAIN WRONG

1. Too high: Missing one of the two feedback resistors from output, R538 or R542, (CX4/T)

R524; or input RN902, (CX4/T) RN500 is wrong value. (Faulty input resistors will cause the

amplifier to fail the Common Mode test.)

2. Too low: Above feedback values wrong or shunt resistor R54

1

/C520, (CX4/T) R523 wrong or

open (open causes very low gain with instability. Check circuit trace).

l 

POOR FREQUENCY RESPONSE (Be sure to correct any gain problem first)

1. High frequency, determined by feedback capacitor C519, (CX4/T) C516 (wrong value also

causes instability)

2. Low frequency, determined by DC feedback rolloff C520, and “butte

rworth

” feedback

compensation network C518/R542. (CX4/T) C502 low frequency ro

l

loff.

l 

STEP CIRCUIT (CX

1

2/T only)

Check step circuit components U501, U502, Q503, Q504 carefully, note exact output voltage where
step cuts in (are both matched to 1V). Step turning on too late (too high) will hang up at 2 ohms.
Check referent 15V zener voltages D509 and D510. After inspecting all parts, see below:

1. Step distortion: check step filter components R508/C505, R504/C501, and C528.

19

Summary of Contents for CX Series

Page 1: ...CX Series CX4 CX12 ...

Page 2: ...CX Series CX4T CX1 2T ...

Page 3: ...CX12 CX12T QSC Technical Services Wats 1 800 772 2834 Local 1 714 957 7150 Fax 1 714 754 6173 QSC Online Online Computer Information System 1 800 856 6003 I 71 4 668 7567 QSC Audio Products Inc 1675 MacArthur Blvd Costa Mesa CA 92626 http www qscaudio com ...

Page 4: ......

Page 5: ...2 CX Series Wiring Diagrams CX4 Wiring Diagram 120v 56 CX4 Wiring Diagram 100v 57 CX4 Wiring Diagram 230v 58 CX4T Wiring Diagram 120v 59 CX4T Wiring Diagram 100v 60 CX4T Wiring Diagram 230v 61 CX6 Wiring Diagram 120v 62 CX6 Wiring Diagram 100v 63 CX6 Wiring Diagram 230v 64 CX6T Wiring Diagram 120v 65 CX6T Wiring Diagram 100v 66 CX6T Wiring Diagram 230v 67 CX12 Wiring Diagram 120v 68 CX12 Wiring Di...

Page 6: ......

Page 7: ...rtion SMPTE IM Frequency Response Damping Factor direct outputs Noise Input Impedance Dimensions Faceplate Width Faceplate Height Chassis Depth Weight Shipping Lbs kg Net Lbs kg 450 watts 700 watts 35x 31 dB 0 96 V rms 200 watts 400 watts 300 watts 650 watts 450 0 watts 650 watts 600 watts 400 watts 40x 32 dB 1 02 Vrms 1200 watts 1800 watts 56 5 35 dB 1 00 Vrms Less than 0 05 20Hz to 20kHz 0 2dB 2...

Page 8: ...0 watts 900 watts CX12T 400 watts 600 watts 900 watts 500 watts 500 watts 1200 watts 1800 watts Voltage Gain dB Sensitivity for rated power 8 ohms Distortion SMPTE IM Frequency Response Damping Factor Noise Input Impedance Dimensions Faceplate Width Faceplate Height Chassis Depth Weight Shipping Lbs kg Net Lbs kg 35x 31 dB 40x 32 dB 0 98 V rms 1 02 Vrms 56 5x 35 dB 1 00Vrms Less than 0 05 3dB 45Hz...

Page 9: ... list The test troubleshooting sections refer to designations shown in the schematics EquivalentParts Although many of the electronic components used in this product may be available from electronic suppliers some components are specially tested and approved by QSC A product repaired with non QSC supplied components may not meet factory specifications Repairs performed using non QSC parts may void...

Page 10: ...ither sending a self addressed stamped envelope and a 3 1 2 disk to QSC or by logging on to QSC Online and downloading the appropriate files Test Point Schedule The following test points are described for testing and troubleshooting references These test points are universal among all models Actual voltages and current readings will vary AMPLIFIER SECTION J502 Bed of Nails J602 is for channel 2 Pi...

Page 11: ...the variac voltage and watch for excessive current draw Line current greater than 0 5A a c at 60 Volts This is slightly less for 240V Pause at 90VAC 200VAC European for three seconds until the mute protect circuit disengages Continue to 120VAC 240V European 2 Turn the power switch off and on a few times to verify the 1 3 second power up muting delay Check both channels l CHANNEL OUTPUT 1 Look for ...

Page 12: ...to about 9 amperes until thermal protect shutdown 3 While the amplifier is driving a short observe the main supply rail voltages Ideally they will be no more than 3 volts from each other 4 Remove the short from each channel and verify that the channels recover in to 4 ohm loads The output should not experience any hang up and a full sinewave should be present just as it was before a short was appl...

Page 13: ... into an 8 ohm load 2 While verifying rated power check that at all frequencies the distortion measurement is less than or equal to 0 1 To obtain this measurement check to ensure that the 80kHz low pass filter is engaged on the analyzer CXT 1 Check to ensure that both channels will produce rated power at 45Hz 2KHz and 16kHz into an 8 ohm load 2 While verifying rated power check that at all frequen...

Page 14: ...fier and select an output of 1 15 VRMS 1 KHz sine wave 7 Plug the amplifier in to a variac and set up an AC line current monitor l POWER UP MUTE DELAY TEST 1 Slowly raise the variac voltage and watch for excessive current draw Line current greater than 0 5A a c at 60 Volts This is slightly less for 240V Pause at 90VAC 200VAC European for three seconds until the mute protect circuit disengages Cont...

Page 15: ...pply a 1Vrms sinewave 1 kHz input signal to both channels of the amplifier Ensure that power is on and that the gain controls are fully up 2 While the amplifier is producing power into the loads apply a short to the output binding posts of each channel In other words apply a jumper between the red and black binding posts of each channel Once this is done the combined AC line current draw for both ...

Page 16: ...will produce rated power at 20Hz 2KHz and 20kHz into an 8 ohm load For the CX6T under test check power levels between 200Hz 2kHz and 20kHz 3dB 45Hz 0 2dB 16 kHz 2 While verifying rated power check that at all frequencies the distortion measurement is less than or equal to 0 1 To obtain this measurement check to ensure that the 80kHz low pass filter is engaged on the analyzer Check distributed line...

Page 17: ... at 60 Volts This is slightly less for240V Pause at 90VAC 200VAC European for three seconds until the mute protect circuit disengages Continue to 120VAC 240V European 2 Turn the power switch off and on a few times to verify the 1 3 second power up muting delay Check both channels l CHANNEL OUTPUT 1 Look for amplified signal on the scope for channel 1 Switch the input signal and scope to channel 2 ...

Page 18: ...ignal to both channels of the amplifier Ensure that power is on and that the gain controls are fully up 2 While the amplifier is producing power into the loads apply a short to the output binding posts of each channel In other words apply a jumper between the red and black binding posts of each channel Once this is done the combined AC line current draw for both channels should be no greater than ...

Page 19: ...e same voltage amplitude at each of the frequencies selected within 200Hz to 20kHz The frequency extremes for the CX6Tdirect outputs is between 45Hz and 16kHz 3dB 45Hz 0 2dB 20 kHz Check both channels l POWER vs DISTORTION TEST 1 Check to ensure that both channels will produce rated power at 200Hz 2KHz and 20kHz into an 8 ohm load For the CX6T under test check power levels between 200Hz 2kHz and 2...

Page 20: ...to the load by the amplifier The noise signal should be 100 dB down from the full output power point measured A signal to noise ratio should be better than or equal to 1 00dB Check both channels l FINAL CHECK This completes the amplifier test procedure for this model Inspect the amplifier for mechanical defects Inspect the solder connections Reassemble the amplifier and verify the amplifier s oper...

Page 21: ...setting DMV to diode mode To verify a good bridge rectifier connect the negative lead to BR BR bridge rectifier and check for 0 4 to 0 6v at both AC terminals Connect positive lead to BR and check for 0 4 to 0 6v at both AC terminal 2 Both supply clamping diodes shorted or reversed D512 D513 D612 D613 CX6 T CX12 T D510 D512 CX4 T 3 Shorted or reversed C509 C510 C511 C512 C609 C610 C611 C612 CX12 T...

Page 22: ...s voltage is low check for leaky C51 C52 defective D51 or open R51 R54 3 Check for open LD50 and PTCs R56 R57 l AMPLIFIER WILL NOT THERMALLY PROTECT If Muting circuit is OK 1 Check for shorted LD50 and PTCs R56 R57 incorrect R55 R53 or open R50 l MUTING DELAY 1 Excess muting delay rest works OK Check timing capacitor C51 voltage If it rises normally but circuit is slow to turn on check D51 2 No mu...

Page 23: ...rotect LED works ALSO WITHOUT THERMAL OR DC PROTECT relay or circuit is stuck on 1 Relay Q512 shorted or wrongly mounted Check by jumping base to emitter should turn it Off 2 Relay Q513 shorted or wrongly mounted Check by jumping base to emitter should turn it Off NO MUTING DELAY ONLY all else OK 1 D518 reversed charges timing capacitor C515 immediately 2 R528 low fast C515 charge 3 R29 low low vo...

Page 24: ...nt limit trimmer VR502 VR503 will produce a zero volt output there will be no signal of course If so output stage is probably OK look for problems in the IC or its associated parts 6 Defective reversed IC pull and check voltage l FAN DOESN T WORK 1 Always operate at high speed check shorted fan thermal switch on the heatsink under the main PCB 2 Always operate at low speed check defective fan ther...

Page 25: ...isadjusted current limits VR502 VR503 CX4 T R514 R515 3 Defective zener D511 D514 CX4 T D503 D506 4 Check for open R512 R522 R539 R546 CX4 T R513 R525 R503 R526 5 680 ohm chargeback resistor R548 may be open CX4 T R518 l GAIN WRONG 1 Too high Missing one of the two feedback resistors from output R538 or R542 CX4 T R524 or input RN902 CX4 T RN500 is wrong value Faulty input resistors will cause the...

Page 26: ...R541 R542 R568 R538 R547 CX4 T R502 R523 R524 MEDIUM Check feedback capacitor C519 CX4 T C516 LOW GAIN Suspect open circuit in feedback shunt R541 and C520 CX4 T R523 Check for broken circuit trace Substitute IC and check IC socket for contamination l EXCESSIVE OR UNBALANCED CROSSOVER Excess notch or ringing at zero crossing 1 Severe shorted bias diode D505 D506 CX4 T D504 D505 2 Moderate Out of s...

Page 27: ... SHORT 1 Check op amp weak output current 2 Clip LED LD103 open clip circuit parts R544 high or missing CX4 T LD1 LD3 R511 3 D101 D102 D103 D104 open CX4 T BR500 l CURRENT LIMITING TOO LOW INTO SHORT AND 2 OHM LOAD 1 Bias resistor R512 R522 high 2 Very low gain driver transistors 3 Missing connection or open emitter resistors in some of the paralleled output transistors CURRENT LIMITING TOO LOW IN...

Page 28: ...LABEL RE 000170 NR THERMISTOR NTC 30A WC 003070 00 AC POWER CORD EX MX SERIES NOTE 1 Replace the CE label with a cUL label 2 Replace the serial label with appropriate VOLTAGE and CURRENT listings 3 Remove the FUSE label on the AC PCB Qty Reference 1 CHASSIS 1 F901 1 CHASSIS 1 R901 1 CHASSIS Model CX12 12T Part Number Description Qty Reference LB0000052 00 LABEL cUL APPROVAL 1 CHASSIS LB 16022640 L...

Page 29: ...USE 1 F901 PS 000038 00 SERIAL LABEL 1 CHASSIS RE 000160 NT THERMISTOR NTC 15A 1 R901 WC 00 3069 00 AC POWER CORD EXPORT 1 CHASSIS NOTE 1 Replace the cUL label with a CE label on the rear panel 2 Replace the serial label with appropriate VOLTAGE and CURRENT listing label 3 Place a 12A FUSE label on the AC PCB overlapped the 2OA fuse label Model CX12 12T Part Number Description Qty Reference LB 000...

Page 30: ...ng label Model CX12 12T Part Number Description PS 000038 00 SERIAL LABEL NOTE 1 Remove the cUL label on the rear panel 2 Replace the serial label with appropriate VOLTAGE and CURRENT listing label Qty Reference 1 CHASSIS CX Series Voltage Conversion PARTS REQUIRED FOR 12OV OPERATION FROM 1 OOV Please refer to CX Series wiring diagrams in this manual for AC Voltage drawings Model CX4 4T Part Numbe...

Page 31: ...EX MX SERIES NOTE 1 Remove the CE label on the rear panel 2 Replace the serial label with an appropriate VOLTAGE and CURRENT listing label Qty Reference 1 CHASSIS 1 CHASSIS Model CX6 6T Part Number Description MS 000050 MS 2OA 25OV FUSE PS 000038 00 SERIAL LABEL RE 000170 NR THERMISTOR NTC 30A WC 00307040 AC POWER CORD EX MX SERIES NOTE 1 Remove the CE label on the rear panel 2 Replace the serial ...

Page 32: ...CHASSIS LB 16022642 LABEL FUSE 12A 25OV 1 AC PCB MS 1 20250 FU 12A 250V FUSE 1 F901 PS 000038 00 SERIAL LABEL 1 CHASSIS RE 000160 NT THERMISTOR NTC 15A 1 R901 WC 003069 00 AC POWER CORD EXPORT 1 CHASSIS NOTE 1 Place a CE label on the rear panel next to the AC cord 2 Replace the serial label with appropriate VOLTAGE and CURRENT listing label 3 Place a 12A FUSE label on the AC PCB overlapped the 20A...

Page 33: ...F 10 100V C301 302 C401 402 CAP CER 1 UF 20 5OV C308 309 C34 35 C408 409 CAP LYTIC RL 220UF 20 25V C31 HEADER 1 X 5 VERT J33 HDR LATCHING BOX 16 PIN J32 CONN HEADER 7 PIN EURO RT BLK J31 STUD PEM 4 40 X 1 4 E BRACKET 6 32 THD RT ANGLE Ic LIN D U A L 0P AM P c3317aP u31 301 u401 LABEL INPUT CX SERIES NUT KEPS 4 40 6 EXTERNAL TOOTH LOCKWASHER RES VAR 1 T 1 OK 20 0 2W W DET R302 402 XISTOR NPN TO 92 ...

Page 34: ...R 22GA BARE SOLID Cl 02 202 c103 105 C203 205 ClO6 206 Cl 2 REF UlOl JlOl 201 JlO LDlO2 104 LD201 204 REF LDlOl LDlOl 201 LDlO2 202 LDlO3 104 LD203 204 DlOl 104 D201 204 Dl 2 RlO3 203 RlO5 205 RlOl 201 RlO2 202 R 106 206 R 104t204 w101 201 CX6T Display Board Assembly WP 000944 01 CX 6T DISPLAY ASSY Part Number Descriotion C A 0 4 7 0 0 1 1 0 C A 2 3 3 0 0 1 1 0 CA 4 15002 10 CAP CER 47PF 10 1 OOV ...

Page 35: ... 204 DlOl 104 D201 204 Dl 2 R 103 203 R 105 205 RlOl 201 RlO2 202 RlO6 206 RlO4 204 Wl 01 201 CXI 2T Display Board Assembly WP 000944 03 CX 12T DISPLAY PCB ASSY P a r t N u m b e r D e s c r i p t i o n CA 047001 10 CAP CER 47PF 10 1OOV NPO Reference c101 201 CA 233001 10 CA 4 15002 10 CA 647003 1 0 CA 733025AE CO 000008 IC co 000044 co CO 000048CO IC 000032 00 PC 000944 00 PL 905385SP QD 000052 0...

Page 36: ...5 D504 604 D510 512 D610 612 QD 004148 DX 30 DIODE SWITCH DO35 75V 75MA D507 509 D51 1 607 D608 609 C516 600 C601 616 c509 510 C609 610 REF U501 U601 J61 J62 63 J50 F600 REF F500 U501 601 u50 Q504 603 Q604 REF Q503 Q50 D503 506 D603 606 Q500 502 Q600 602 LD50 Q505 507t Q605 607 QD 004934 DX QD 400400 BX RE 02205 FW RE 56005 EM RE 68005 DM RE 000006 PT RE 000009 PT RE 000015 00 RE 000050 NR RE 0010...

Page 37: ...C Q605 ETC REF Q505 ETC Q601 ETC REF Q501 REF U503 U603 J51 J501 601 J52 J503 603 J502 2 PL J602 2 PL F503 F601 F603 REF F501 U503 603 F501 F503 F601 F603 ETC Q601 ETC REF Q501 R511 2PL R611 2PL L501 2 PL L601 2 PL LD601 REF LD501 VR501 601 C D 000018 QD QD 000019 QD QD 000040 00 QD 000055 10 QD O00056 10 QD OOO4 7 ZT QDaOO7 5 ZT QD 001302 PN QD 001340 LR QD 003281 NP QD 004004 DX QD 004744ZA QD 0...

Page 38: ...002 BM RES NTWK 8 PIN SIP 1 OK 1 4R RN 31 0002 BM RES NTWK a PIN SIP 1 OOK 2 4R SC 062050 PP 6 X 5 16 B P P ZINC SC 081 101 SP 18X 5 f3 TYPE I P P BLACK R536 636 R539 639 R546 646 R534r634f R537fi37 R532r632 R529 629 R538 638 R542t642 R549 649 R528 628 R530 630 RN503 603 RN502 602 RN501 601 SW 000029 SW RELAY SPKR PROTECT SPDT 24VD K501 601 SW 000550 00 55 C THERMAL CUT IN 25 DEG ANG WC 0 1020 JW ...

Page 39: ...LON O l25 L ETC Q601 ETC REF Q501 REF U503 U603 J51 J501 601 J52 J503 603 J502 602 F50 1 F504 F60 1 F604 REF U501 601 U502 602 U503 603 F5ObF504 F601 F604 ETC Q601 ETC REF Q501 R511 2PL R611 2PL PL 905156 SP PT 11 OOOO AT PT 220000 AT QD 000018 QD QD 000019 QD QD 00003 1 QD QDaOOO40 00 QD 000055 10 QD O00056 10 QD 0004 7 ZT QD 0007 5 ZT QD 00081 O DX QD 001302 PN QD 001340 LR QD O03281 NP QD 00400...

Page 40: ... 610 R537 637 R535 635 R536 636 R539 639 R546 646 R534 634 R532 632 R503 603 R507 607 R529 629 RE 221501 CM RES MF 21 5K 1 1 2W R538b638 RE 222006 BM RES MOFP 22K 5 1 W R509 609 RE 260401 BM RES MF 60 4K 1 1 4W R542t642 RE 310005 BC RES CF 1OOK 5 1 4W R549 649 RE 339005 BC RES CF 390K 5 1 4W R528 628 R530 630 RN 1 22002 BM RES NTWK 8 PIN SIP 2 2K 2 4R RN503 603 RN 21 0002 BM RES NTWK B PIN SIP 1 O...

Page 41: ... SHIPPING lNSERT PL 1 8 12E6RJ EX MXA 2 SP SHIPG CRTN 22C7AA SHIPPING BAG FULL LENGTH CHAS PADSHIPPING EXjMXA 22C6YQ 6 32 X 1 4 P P BLACK SEMS lT 6 32 X 1 2 P P BLACK 8 32 X 5 16 P P SEMS BLACK SCREW TAP PAN PH 6X5 16 B BK SWITCH POWER DOUBLE POLE CABLE ASSY 14 COND RIB 10 LG RIBBON CABLE 14 COND 23 LG CABLE ASSY SPKR CX4 AC SWITCH WIRE RED 13 62 AC POWER CORD ASSY EX MX 2 SF R901 CX4 4T MAIN FAN ...

Page 42: ...PG CRTN 22C7AA SHIPPING BAG FULL LENGTH CHAS PADSHIPPING EX MXA 22C6YQ 6 32 X 114 P P BLACK SEMS lT 6 32 X 1 2 P P BLACK 8 32 X 5 16 P P SEMS BLACK SCREW TAP PAN PH 8X5 16 B BK 1 4 20 X 2 25L 2A P P SWITCH POWER DOUBLE POLE CABLE ASSY 14 COND RIB 10 LG R901 RIBBON CABLE 1 4 COND 23 LG CABLE ASSY SPKR CX4 AC SWITCH WIRE RED 13 62 AC POWER CORD ASSY EXjMX 2 SP CX4 4T MAIN FAN ASSY SINGLE 2 SP DC AUD...

Page 43: ... lp LG CABLE ASSY 16 COND RIB 28 LG WIRE ASSY OUTPUT CX SERIES QSC SLEEVE 1 101 5 CLEAR AC POWER CORD ASSY WIRE ASSY AC SWITCH WIRE ASSY THERMOSTAT SW 2 SP CX6 TRANSFORMER Part Number Description CH O00008 00 VISUAL SHIELD Reference CH O00052 00 CH OOOO56 00 CH 000064 00 CH 1402 1 O BX CH 400016CIO CO OOOO96 00 co 0001 00 00 HW O60090 SO RACK EAR CX SERIES TOP COVER CHASSIS CX SERIES KNOB FABRICAT...

Page 44: ...ANUAL CABLE ASSY 14 COND RIB 1 o LG CABLE ASSY 16 COND RIB 28 LG WIRE ASSY OUTPUT CX SERIES QSC SLEEVE I 101 5 CLEAR AC POWER CORD ASSY WIRE ASSY AC SWITCH WIRE ASSY THERMOSTAT SW 2 SP CX6 TRANSFORMER PWR XFMR TOROIDAL 250W CH 000052 00 CH 000056 00 CH 000064 00 CH 1402 1 O BX CH 400016 00 CO 000096 00 co 0001 oo oo HW 060090 SO HW 080002 HW IC 000032 00 LB 000099 01 LB 0001 24 00 LB 0001 28 00 LB...

Page 45: ...SCREW 1 O 32X3 8 BLK P P SEMS SWITCH POWER DOUBLE POLE CX SERIES OWNERS MANUAL CABLE ASSY 14 COND RIB IO LG CABLE ASSY 16 COND RIB 2v LG WIRE ASSY OUTPUT CX SERIES QSC SLEEVE 1101 5 CLEAR AC POWER CORD ASSY WIRE ASSY AC SWITCH WIRE ASSY THERMOSTAT SW 2 SP CX12 TRANSFORMER CH OOOO52IIO CH 000056 00 CH 000064 00 CH 1402 1 O BX CH 400016 00 CO 000096 00 c0 000100 00 HW 060090 SO HW 080002 HW l_B O000...

Page 46: ...5 CLEAR AC POWER CORD ASSY WIRE ASSY AC SWITCH WIRE ASSY THERMOSTAT SW 2 SP CX12 TRANSFORMER CXl2T Finished Chassis Assm 230V WP 001730 02 CX 12 CHASSIS ASSY 230V Part Number Description Reference CH 000008 00 VISUAL SHIELD CH 000052 00 RACK EAR CH 000056 00 CX SERIES TOP COVER CH 000064 00 CHASSIS CX SERIES CH 14021 O BX KNOB FABRICATION CH 400016 00 BLANK UPPER INPUT PANEL CO 000096 00 CONN BARR...

Page 47: ...VER TRANSISTORS TMOS Power Field Effect Transistor 2SC3298 NPN I 2SAl308 PNP B C E OP AMP NE5532AN POWER TRANSISTORS Dual Operational Amplifier 2SC3281 NPN 2SAl302 PNP B C E SMALL SIGNAL TRANSISTORS 2N4410 NPN MPS8599 PNP OP AMP MC33178P Dual Operational Amplifier E EIC B 41 ...

Page 48: ... CO g ZO 803 r sod s mjw3 038303 AlNO LO W 00 lOj rat403 wbtd cw j3ll3U NlVkllS C NlHSnR A IN0 OO klOd lVAO8ddV 1fP 13EVl lndlfl0 13EVl a038 x x 0 ao3ti z 1nN Sd3X K 9 139 1 mm0 0 mvd 33kl l SVWX dllZl am m NV L 1ndNl 138Vl L NNOCI Nld L ASSV ECId 1ndNl EDd NIVW too caoooo 08 33s SISSVHD YzsaY ...

Page 49: ...43 ...

Page 50: ... CX Series 44 ...

Page 51: ......

Page 52: ...1 CX Series a 46 ...

Page 53: ...1 I v 47 ...

Page 54: ...CX Series 4a ...

Page 55: ...CX Series ...

Page 56: ...CX Series _ _____ i 50 ...

Page 57: ... a C X S e r i e s t ...

Page 58: ...PER INPUT PANEL 6 32 X 5 16 L KNO6 2 REOO ADHESIVE FEET 4 REOD 6 32 KEPS NUT 1 RFon __ _ _ _ _ _ _ _ OUTPUT LA6EL 4 I Em MAIN PC6 INPUT PC8 ASSY SCREW 6 32 X 1 2 L 1 4 REOO AC CORD PROTECTM 7 AC PwR CORD _I FOR iI 01 C dLY CHASSIS ASSY CX6T CXl2T PWR AMP ACPWR CORD FM 02 ok Y ...

Page 59: ...CX Series ...

Page 60: ...CX Series ...

Page 61: ...H 5 5 ...

Page 62: ...IWOHS A021 V X3 WVki3VlO ONMM xv LOmoo ix n3m osNvnl ...

Page 63: ...14 CcNOucT Rieam CAeu WH FIN TO RN lNTfRCONNECTS K OOWM 00 r 14 fmmlJCTOR l mm CARE HIM PIN TO FIN INTERCCNNECl WIRING DIAGRAM CX 4 1DOV SHDWN ...

Page 64: ...I I oml ION om 104 I I INI I II kla 6waca SKDNNXXi3lM Nld Ol Nld IUM 3lm M36aRl6al mlm tl ...

Page 65: ...CX Series 59 ...

Page 66: ...CX Series 60 ...

Page 67: ...CX Series i r ...

Page 68: ...I I ____ d 62 ...

Page 69: ...16 CWOUClOJI RIBON CA8l E wHPlN To PlNlN cT5 14axGaa WH PIN lo PIN Wd E CT5 f 14lzwxJCla CA E WH PIN TO PW lNlEWNNECl 5 OiANNEl 1 WRING DIAGRAM CX 6 1DDV SHOWN ...

Page 70: ...CX Series r 0 _________ a 64 ...

Page 71: ... CA E WH PIN TO PIN INTERCONNECTS f I4 awnJcTffl RBew CABLE MTH PIN m PIN INTE CTS 1 JlOl f14 CwxJCmR Rle8ON CABLE MlH PIN lo PIN Nl d CONNKTS 9Km I ml CHlSPKRCU kC INPUT WIRINGDIAGRAM cx 6T WIRINGDIAGRAM CX 6T 1ZOV SHOWN ...

Page 72: ...NwclD7 RIWON CABLE WH PW TO PIN INlLQCCWEClS l4awmJmx Wli PIN TO PIN WlWCCMEClS 14 CONwcm m86ON Cm WH PIN lo FIN INlERCONNECTS 5sutCl CHhNNEL 2 PART Cf J51 s m Ctl2 SPKR COUhW WlRlNG DIAGRAM CX 6T 1OOV SHOW ...

Page 73: ... f 6 7 ...

Page 74: ...L I CX Series 68 ...

Page 75: ...1 I I 6 9 ...

Page 76: ...CNDUClOR RIE8W CA E WH PIN TO PIN INFXCWNECTS f I4 cxwlJc1m MERON CABLE WH PIN TO P N INTERCCNNfCTS 14 CONOLlCTrn mwm CA E WH PIN TO FIN INERCONNECTS WIRINGDIAGRAM CX 12 23DV SHDW __l_ _ _ _ _ __ _ _____ _ _ ...

Page 77: ...CONDUCTOR mm CARE WH PIN TO FIN lNlWCCWEC 14 CCwuc tx mtxa wxf WH PIN TO FIN INTERCCUNfClS JlOl v 14 lzCwlJC1m REECN CAmI Wli PN TO PN INTEFXXWECTS Cn1uJOl0EuR xf OoOoz4 al u MRING DIAGRAM CX 12T 12OV SHOWI WlRlNGDIAGRAM CX 12T ...

Page 78: ...4 a3cnJc1m RlBm CARlE MlH PIN TO FIN INTERCONNECTS JlOl OiANNEL I o PART W 61 s Plc 14 CCWUCTC 7 RIBBUd CMLE WH PIN TO PIN INERCCNNECTS I lll I AC POW4 cm I I AC INPUI CWNNEL 2 M 2 AK40 SUR Al PART W J5l WIRING DIAGRAM CX 12T 1OOVSHOW _ _ _ _ ___ ____ _ _ _ ...

Page 79: ...W CABLE ME l PIN TO PIN INlERCWNfCTS AC INPUT AC POMR CCi D _ I AC WzR 14 CC9cuc1a RIBBON CA f WH FIN TO PlN INKRCONNECTS PART Of i51 s PTC r L wJm iil L_____ __J CH1AuOlom XF OCUl24 00 WRING DIAGRAM CX lZl 23OV SHOWN ...

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Page 87: ...CX4 4T PCB Assemblies Component Side ...

Page 88: ...C X 4 4 T P C B A s s e m b l i e s S o l d e r S i d e ...

Page 89: ...CX6 6T CXl2 12T AC PCB Assy Component Side R901 J902 J901 J906 J907 J908 iti J903 J904 J905 J909 J910 FUSE i4S MARKED RISK OF FIRE 913 REPLACE WITH ...

Page 90: ...CX6 6l 8 CXl2 12T Main Display Input PCB Assy Solder Side C 000944 00 REV A ...

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