McIntosh-MC601-pwr-sm维修电路原理图.pdf

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1、MC601 MC601 QUAD BALANCED POWER AMPLIFIER SERVICE MANUAL PRELIMINARY SERIAL NO. AAY1001 And Above Performance Specifications .2 Notes .2 Rear Panel .3 Section Location .4 Block Diagram .5 - 6 Interconnection Diagram .7 - 8 Main Schematic and PCB .9 - 16 Capacitor Schematic and PCB .17 - 20 Left Inpu

2、t Schematic and PCB .21 - 24 Right Input Schematic and PCB .25 - 28 Heatsink Schematic and PCB .29 - 34 Left Terminal Schematic and PCB .35 - 38 Right Terminal Schematic and PCB .39 - 42 Display Schematic and PCB.43 - 46 Parts List .49 - 54 Repacking Instruction .55 CONTENTS RadioFans.CN 收音机爱 好者资料库

3、2 1. Unless otherwise noted, all voltages indicated on the schematics are measured under the following conditions: a. AC input at rated voltage marked on rear panel. b. All voltages are +/-10% with respect to ground. A high impedance (10 megaohm) voltmeter must be used. 2.Unlessotherwisespecified: a

4、. Resistor values are in ohms. b. Capacitor values are microfarads (uF). c. Inductor values are in microhenries (uH) 3. On PC board drawings, Square pad indicates: a. Polarized Capacitors - Positive b. Diodes - Cathode c. Others - Pin 1 4. WARNING Parts marked with the symbol have critical character

5、istics. Use only replacement parts recom- mended by the manufacturer. 5. Use McIntosh Remote Control Model HR063. NOTES PERFORMANCE SPECIFICATIONS Specifications: Power Output Minimum sine wave continuous average power output is: 600 watts into 2 ohm load 600 watts into 4 ohm load 600 watts into 8 o

6、hm load Output Load Impedance 2, 4 or 8 ohms Rated Power Band 20Hz to 20,000Hz Total Harmonic Distortion 0.005% maximum harmonic distortion at any power level from 250 milliwatts to rated power, 20Hz to 20,000Hz Dynamic Headroom 1.8dB Frequency Response +0, -0.25dB from 20Hz to 20,000Hz +0, -3.0dB f

7、rom 10Hz to 100,000Hz Input Sensitivity (for rated output) 4.8 Volts Balanced 2.4 Volts Unbalanced Signal To Noise Ratio (A-Weighted) 96dB Balanced (124dB below rated output) 94dB Unbalanced (122dB below rated output) Intermodulation Distortion 0.005% maximum, if the instantaneous peak power output

8、does not exceed twice the rated power output for any com- bination of frequencies from 20Hz to 20,000Hz. Wide Band Damping Factor Greater than 40 Input Impedance 22,000 ohms Balanced 22,000 ohms Unbalanced Voltage Gain 29dB, 8 Ohms 26dB, 4 Ohms 23dB, 2 Ohms Power Guard Less than 2% Total Harmonic Di

9、stortion with up to a 14dB overdrive signal Power Control Input 5-15VDC, less than 1mA Power Control Output 1 and 2 12VDC, 50mA maximum total Output is delayed 0.2 seconds from turn On Power Requirements Field AC Voltage conversion of the MC601 is not possible. The MC601 is factory configured for on

10、e of the following AC Voltages: 100V 50/60Hz at 8 Amps 110V 50/60Hz at 6.6 Amps 120V 50/60Hz at 6.6 Amps 220V 50/60Hz at 3.6 Amps 230V 50/60Hz at 3.3 Amps 240V 50/60Hz at 3.3 Amps Standby: less than 0.5 watt Note: Refer to the rear panel of the MC601 for the correct voltage. Overall Dimensions Width

11、 is 17-1/2 inches (44.45cm) Height is 9-7/16 inches (23.97cm) including feet Depth is 22 inches (55.88cm) including the Front Panel, Handles and Cables Weight 93 pounds (42.18 kg) net, 126 pounds (57.15 kg) in shipping carton Shipping Carton Dimensions Width is 29-1/2 inches (74.93cm) Height is 17 i

12、nches (43.18cm) Depth is 29 inches (73.66cm) RadioFans.CN 收音机爱 好者资料库 MC601 REAR PANEL 3 RadioFans.CN 收音机爱 好者资料库 4 SECTION LOCATION RadioFans.CN 收音机爱 好者资料库 MC601 56 BLOCK DIAGRAM ThermalTrak DC BIAS OUTPUT MUTE THERMAL SENSORS BALANCED AMP POWER GUARD ATTENUATOR INPUT MODE SWITCH - AMP + AMP UNBALANC

13、ED OUTPUT UNBALANCED INPUT BALANCED INPUT BALANCED OUTPUT + + - - PG INDICATOR TURN ON DELAY POWER GUARD DIFF AMP DIFF AMP CURRENT SOURCE VOLTAGE AMP VOLTAGE AMP PREDRIVER PREDRIVER DRIVER DRIVER OUTPUT OUTPUT POSITIVE CURRENT LIMITER NEGATIVE CURRENT LIMITER NEGATIVE FEEDBACK CURRENT TRANSDUCER CUR

14、RENT LOG AMP VOLTAGE LOG AMP SUMRECTIFIER METER SWITCH HOLD DC AMP METER OUTPUT AUTO- FORMER 8 ohm 4 ohm 2 ohm PREDRIVERDRIVER OUTPUT NEGATIVE CURRENT LIMITER DIFF AMP VOLTAGE AMP ThermalTrak DC BIAS CURRENT SOURCE POWER GUARD DIFF AMP VOLTAGE AMP PREDRIVER DRIVEROUTPUT POSITIVE CURRENT LIMITER INRU

15、SH CURRENT LIMITER AC PowerMAIN RELAYS BACKUP POWER SUPPLY CONTROL LOGIC LIGHTING CONTROL POWER CONTROL FUSE POWER SWITCH LOW VOLTAGE SUPPLY POWER TRANSFORMER MAIN SUPPLY ThermalTrak DC BIAS OUTPUT MUTE THERMAL SENSORS BALANCED AMP POWER GUARD ATTENUATOR INPUT MODE SWITCH - AMP + AMP UNBALANCED OUTP

16、UT UNBALANCED INPUT BALANCED INPUT BALANCED OUTPUT + + - - PG INDICATOR TURN ON DELAY POWER GUARD DIFF AMP DIFF AMP CURRENT SOURCE VOLTAGE AMP VOLTAGE AMP PREDRIVER PREDRIVER DRIVER DRIVER OUTPUT OUTPUT POSITIVE CURRENT LIMITER NEGATIVE CURRENT LIMITER NEGATIVE FEEDBACK CURRENT TRANSDUCER CURRENT LO

17、G AMP VOLTAGE LOG AMP SUMRECTIFIER METER SWITCH HOLD DC AMP METER OUTPUT AUTO- FORMER 8 ohm 4 ohm 2 ohm PREDRIVERDRIVER OUTPUT NEGATIVE CURRENT LIMITER DIFF AMP VOLTAGE AMP ThermalTrak DC BIAS CURRENT SOURCE POWER GUARD DIFF AMP VOLTAGE AMP PREDRIVER DRIVEROUTPUT POSITIVE CURRENT LIMITER RadioFans.C

18、N 收音机爱 好者资料库 78 INTERCONNECT1 RadioFans.CN 收音机爱 好者资料库 MC601 MAIN 751232 SCH 1 OF 32 910 J10 J11 26 8 4 1 3 5 7 PRIMARY T2 .15uF C13 J9:1 J9:2 + .3A t R38 D16 D17 D15 D18 1 1 1 BLU GRN BLU 1.1A t R40 .047F C14 3300F C18 100F C25 3300F C19 +15V J24 J25 J26 1.1A t R41 -15V 27.4K R47 27.4K R50 1.21K R45

19、 100F C24 HS4 27.4K R44 82.5K R49 HS3 221K R48 .01F C21 D19 D20 D21 D22 1 ORNJ22 1 ORNJ23 PWR RLY .3V .3V 5V +5V AC DETECTOR 0V 4 2 1 3 B+ G ND 5 U6 +5V 3 1 2 Q16 3 1 2 Q15 100K R39 150K R42 .1F C15 AC DET 1 1 AC N AC F T RT2 J20 J18 J15 J13 J14 J19 J17 J16 VIO WHT/VIO WHT BLK BLK/GRY GRY J12 J21 11

20、0V/120V A B C D E G H I J F BLU GRN BLU ORN ORN WHT BLK D14 TEST ONLY NO CONNECTION APPLY 12VDC TO ENERGIZE RELAYS WITH NO AC POWER 3300F C16 100F C23 +5V 47.5K R43 IN ON/OFF OUT GNDADJ _ TAB 1 6 2 3 45 U7 HS2 150K R46 .01F C20 IN ON/OFF OUT GNDADJ _ TAB 1 6 2 3 4 5 U9 IN ON/OFF OUT GNDADJ _ TAB 1 6

21、 2 3 45 U8 1 1 1 1 1 1 1 1 1 1 T RT1 2 1 3 4 K1 2 1 3 4 K2 J7:1 J7:4 J7:7 J7:10 J8:1 J8:4 J8:10 +5V .1F C17 - BRN BRN .1F C22 12V 12V.3V -20V 20V RadioFans.CN 收音机爱 好者资料库 1112 MAIN 751232 SCH 2 OF 32 10k R23 150k R28 D13 3 1 2 Q11 .22uF C11 1uF C12 100 R29 METER LOG AMP 200k R25 METER DRIVER 3 1 2 Q1

22、0 3 1 2 Q13 +14VM+14VM 475k R30 6 5 7 U4:2 22.1k R27 D11 D12 D6 D7 D10 2 3 1 84 B+ B- U5:1 +14VM -5VM PGND 220F C6 +14VM .1UF C8 PGND +15V 220F C7 1k R20 -5VM .1UF C9 -15V 47 .5 W R19 12 T1 10 R22 1000F C10 33.2k R24 2 3 1 84 B+ B- U4:1 D4 D5 D8 +14VM -5VM 18.2k R26 D9 MUTE 1M R37 21 3 G D S Q14 6 5

23、 7 U5:2 HOLD 0.1 1W R21 12.1k R32 -5VM -5VM 200k R33 1k R35 3.32k R34 1 FUNC 1J5:1 1 FUNC 1J5:2 1 FUNC 1J6:1 1 FUNC 1J6:2 METER MET D3 MET V CAL 2CAL 1 475k R31 3 1 2 Q12 475K R36 -5VM 1000pF C26 RadioFans.CN 收音机爱 好者资料库 MC601 1314 MAIN 751232 SCH 3 OF 32 +5V .1UF C3 10F C4 31 2GD S Q2 AMP MUTINGTURN

24、 ON DELAY 1uF C2 1M R1 .22uF C1 +15V+15V 3 1 2 Q1 DRIVER PC OUTPUT MUTE 5V 0V5V 12V 0V 13.2V 5V -18V THERMAL PROTECTION -15V-15V-15V 4 2 1 3 Vcc GND 5 U1 +5V 4 2 1 3 Vcc GND 5 U2 +5V 4 2 1 3 Vcc GND 5 U3 +5V D1 47.5K R3 10K R4 .1UF C5 1K R13 22.1 R14 3 1 2 Q7 3 1 2 Q3 2.21M R2 3 1 2 Q5 3 1 2 Q6 3 1

25、2 Q8 10K R11 33.2K R10 1K R6 12.1K R12 12.1K R16 12.1K R17 + PTC - PTC 1K R7 1.82K R18 3 1 2 Q9 PC IN .6V AC DET+ PTC PWR RLY (+) PTC -15V +15V +15V -15V MUTE PG LT MUTE-18V HEATSINK - PTC (-) PTC -15V +15V +15V -15V MUTE PG LT MUTE-18V J4:1 DISPLAY PC IN ML REM GND J3:1 J3:2 J3:3 J3:4 J3:5 +15V +15

26、V -15V -15V PC OUT GND J3:6 ML REM 5 5 5 5 5 5 INPUT J3:7 GND 5 PC OUTPUT DELAY J1:7 J1:1 J1:4 J1:5 J2:7 J2:1 J2:4 J2:5 ML REM PC IN PC OUT PWR ON PG LT PG LT AC DET J4:2 J4:4 J4:5 J4:7 +15V -15V +15V -15V J4:11 J4:14 HOLD HOLD +5V +5V 7 7 7 7 7 8 8 8 8 8 8 8 8 8 J4:13 J1:3 J2:3 HEATSINK 7 7 7 7 7 .

27、3V D2 PWR ON J4:8 100K R5 METER V MET V J1:6 7 -15V 12.1K R15 3 1 2 Q4 +15V 10K R9 10K R8 0V 0V 0V 0V 0V -7V J4:16 J4:17 J4:18 J4:12 J4:10 J4:9 CAL 2 CAL 1 J4:15 8 8 CAL 1 CAL 2 8 RadioFans.CN 收音机爱 好者资料库 1516 MAIN 751232 PCB2 RadioFans.CN 收音机爱 好者资料库 MC601 1718 CAPACITOR 751207 SCH43 J1 J10 J2 J8 1 1

28、 1 RED RED BLK 27000F C2 PWR TRANSFORMER SECONDARY RED YEL RED BRIDGE J3 J4 J5 J7 J6 J13:1 J13:2 J15:1 J15:2 +V AM P -V AM P 7 7 L HTSNK 7 7 R HTSNK J9 J12 J11 .22F C1 2 34 1 AC AC D1 +V AMP -V AMP +V CAP -V CAP 27000F C3 RECTIFIER 1 YEL 4 4 3 3 43 43 +V AM P -V AM P BLU ORN BLU ORN RED GRN RED GRN

29、+V BRG -V BRG BREAKAWAYBREAKAWAY RadioFans.CN 收音机爱 好者资料库 1920 CAPACITOR 751207 PCB43 RadioFans.CN 收音机爱 好者资料库 MC601 2122 INPUT 751233 SCH5 7 7 GND (-) INP +14V -14V 10uF C11 .1UF C12 .1UF C10 2 2 MAIN J8:1 4 2 3 1 S - + G J1 1 Top 3 J3:1 10uF C4 21 3 G D S Q1 PC IN 100 R13 V + V - Vocm ENA 1 7 2 8 5

30、4 3 6 9 HT SNKU2 2.21k R16 2.21k R17 1.82k R10 1.82k R8 +14V -14V J8:2 J8:3 J8:4 J8:5 J8:6 +15V -15V PC IN PC OUT GND ML REM GND J8:7 2 2 2 2 2 HEATSINK 7 7 GND HEATSINK 7 7 PG ATT 22.1 R12 22.1 R11 7 4 5 6 2 1 3 S1 1k R6 47pF C9 1k R5 100pF C8 1k R3 100pF C5 475 R7 D1 UNBAL BAL INPUT MODE 22.1k R1

31、10uF C3 2 3 1 84 B+ B- U1:1 +14V -14V 100pF C6 4 1 3 2 G S - + J2 INPUTSOUTPUTS 2 5 1 J4 ML REM PC IN PGND +15V -15V - INP + INP J6:4 J6:3 J6:5 J6:1 .022uF C13 7 FB COM 7 FB COM (+) INP PG ATT 100pF C7 1k R4 22.1k R2 3 1 2 4 K1 2.21M R9 6 5 7 U1:2 2 Bottom 4 J3:2 3 1 2 4 K2 PC OUT 2 1 3 2 J5:1 PC OU

32、T 4 6 5 J5:2 PC OUT 1 J7:4 J7:3 J7:5 J7:1 PG ATT 10 R14 10 R15 RadioFans.CN 收音机爱 好者资料库 2324 INPUT 751233 PCB5 RadioFans.CN 收音机爱 好者资料库 MC601 2526 TERMINAL 751234 SCH6 J1 .15F C1 .047F C4 2 5W R1 4 R4 .047F C3 4 R3 .15F C2 2 5 W R2 BRN RED YEL ORN BLU GRN 842 J2 J3 J4 J5 J6 + FB8 + FB2 - FB8 - FB2 1 1

33、 1 1 L AUTOFORMER 1 1 LEFT OUTPUTS BP1BP2BP3BP4BP5BP6 BREAKAWAY J7 7 J8:1 7 7 HEATSINK FB 2 GND FB 8 (+) (+) J8:3 J8:5 7 J9:1 7 7 HEATSINK FB 2 GND FB 8 (-) (-) J9:3 J9:5 RadioFans.CN 收音机爱 好者资料库 2728 TERMINAL 751234 PCB6 RadioFans.CN 收音机爱 好者资料库 MC601 2930 HEATSINK 751235 SCH 1 OF 27 2 2 POS 8/9 NEG

34、+15V PG LT AMP NEG SOURCE NEG SOURCE POS AMP POS AMP VOLTAGE VOLTAGE 475 R16 DIFFERENTIAL 221 R36 100pF C17 CURRENT CURRENT 100pF C16 3 1 2 Q15 221 R35 DIFFERENTIAL 324 R41 AMP 10F C1 10F C2 .1F C4 TERMINALMAIN 475 R12 4.99k R9 267k R18 267k R19 1k R26 3 1 2 Q16 3 1 2 Q19 324 R40 3 1 2 Q2 PG DETECTO

35、R 21 3 G D S Q5 .0047F C7 47.5k R24 47.5k R25 221 R33 3 1 2 Q9 806 R30 21 3 G D S Q6 221 R32 3.32k R31 .1F C3 100 R4 100 R3 3 1 2 Q3 3 1 2 Q12 3 1 2 Q14 3.32k R34 3 1 2 Q8 806 R29 267k R37 3 1 2 Q11 3 1 2 Q13 B+B+ B-B- +14V -14V +14V -14V FB 2 220F C8 475 R10 -15V 2 1pF C12 5/6 5/6 INP GND INPUT 10F

36、 C15 47 .5W R28 -V AMP B- 47 .5 W R27 10F C14 +V AMPB+ MUTE 2 33.2K R11 10F C9 -14V 3 1 2 Q1 -14V 681K R13 AMP M UTING -18V -18V 21 3 Q18 1.5k R39 B+ D3 D4 3 21 Q17 1.5k R38 B- D2 D1 PTC 2 470 +T RT1 DRV + DRV - HS OUT 2.21M R22 PTC -15V +15V PG LT MUTE J3:5 J3:1 J3:3 J3:4 J3:7 J1:3 J1:1 2 1 3 Q20 3

37、 21 Q21 3 1 2 Q22 J2:5 J2:1 8/9 GND J1:5 5/6 PG ATT -14V 10k R6 J2:3 FB 8 2 3 1 84 B+ B- U1:1 6 5 7 U1:2 3 1 2 Q4 .47F C10 2.21K R17 150K R15 8/9 FB COM J1:4 5/6 1M R14 B- FB8 FB2 INP PG ATT FB COM 1k R21 2.21k R20 47uF C11 3 1 2 Q7 3 1 2 Q10 2.21M R23 GP1GP2GP3 47 .5 W R8 J3:6 2 METER V 22.1k R1 .0

38、047uF C6 10 R5 .47 x 2 2 13 R2 1000pF C5 J1:2 NC -1.8V 1.8V PG LIGHT DRIVER PG M UTE DRIVER FEEDBACK NETWORK 1000pF C27 MET V 1000pF C29 1000pF C30 47pF C31 22.1K R71 22.1K R70 R69 430 .5W R7 1.1 1.1 R72 RadioFans.CN 收音机爱 好者资料库 3132 HEATSINK 751209 SCH 2 OF 27 3 NEG POS 3 + V AMP LIMITER CURRENT ADJ

39、UST J5:1 1 BIAS + - V AMP J4:1 1F C18 1F C19 2.21 R42 2.21 R44 .01F C23 324 R47 47F C21 .01F C20 31 2 Q23 D5 20K R49 CURRENT LIMITER 680 R51 BIAS .1F C24 100pF C25 2 1 3 Q27 2 3 1 Q41 47 .5W R56 1 2 3 Q40 3 2 1 Q28:1 3 2 1 Q33:1 3 2 1 Q32:1 J5:2 1.5k R66 1.5k R67 BIAS - RECTIFIER J4:2 31 2 Q24 47F C

40、22 324 R46 680R50 20K R48 D9 1.8k R55 3 2 1 Q26 3 2 1 Q29:1 680 R54 3 2 1 Q31:1 3 2 1 Q34:1 J6 100pF C26 430 .5W R53 500 13 2 CCW R52 3 2 1 Q35:1 3 2 1 Q30:1 POS OUTPUTS POS DRIVER NEG DRIVER NEG OUTPUTS 31 2 Q25 HS OUT 1 NO CONNECTION TEST ONLY .47 x 2 2 13 R59 .47 x 2 2 13 R58 .47 x 2 2 13 R60 +V

41、AMP -V AMP DRV + DRV - HS OUT 54 Q34:2 54 Q35:2 3 2 1 Q36:1 .47 x 2 2 1 3 R61 .47 x 2 2 1 3 R62 1 J7 HS OUT 2 .47 x 2 2 13 R57 .47 x 2 2 13 R65 .47 x 2 2 13 R64 .47 x 2 2 13 R63 D6 D7 D8 54 Q29:2 54 Q31:2 54 Q33:2 54 Q28:2 54 Q30:2 54 Q36:2 3 2 1 Q38:1 54 Q38:2 3 2 1 Q37:1 54 Q37:2 3 2 1 Q39:1 54 Q3

42、9:2 2.21 R43 2.21 R45 .6V .6V .6V .6V .6V .6V 1.2V 1.8V -.6V -.6V -.6V -.6V -.6V -.6V -1.2V -1.8V WHT VIO AUTOFORMER TRACKING BIAS THERMAL JMP1 680 R68 BIAS ADJUSTMENT ADJUST R52 FOR 21-25 mVDC ACROSS J5 WITH NO INPUT SIGNAL AND HEATSINKS COOL RadioFans.CN 收音机爱 好者资料库 MC601 3334 HEATSINK 751209 PCB7

43、RadioFans.CN 收音机爱 好者资料库 3536 8DISPLAY 751237 SCH9 INTENSITYCOLOR DS4 DS3 DS1 GND 1k 13 2 CCW R20 500 13 2 CCW R27 DS2 ON REM OFF HOLD LIGHTS OFF POWER METER 1 1 1 FP ON FP OFF GND 1 1 ML OFF GND J1:1 J1:4 J1:7 J7:1 J7:7 WATTS J7:4 1 HOLD J2:9 J2:10 J2:12 J2:3 J2:2 BREAKAWAY BREAKAWAY +5V 4.75K R6 +5

44、V TURN ON CONTROL 0V 5V 4 2 1 3 Vcc GND 5 U2 +5V 4 2 1 3 Vcc GND 5 U4 +5V 4.75K R11 47.5K R4 22.1K R5 +5V .1UF C1 PC IN FP OFF FP ON PWR ON 4 2 1 3 Vcc GND 5 U3 +5V METER LIGHT CONTROL +5V 5V0V 4 2 1 3 Vcc GND 5 U1 +5V 22.1K R2 47.5K R3 4.75K R15 33.2K R10 221 R12 4.75K R8 1K R7 3 1 2 Q4 +15V .6V 1K

45、 R9 -15V 475 R18 475 R17 PG LED -15V -14.4V 3 1 2 Q1 3 1 2 Q2 3 1 2 Q3 221 R16 ML REM AC DET PG LT ML OFF +5V +15V +15V PC IN ML REM PG LT AC DET +15V -15V HOLD +15V -15V +5V +5V MAIN 1.5K R22 1.5K R24 8.25K R21 8.25K R23 ML COM GND 1.5K R45 8.25K R44 8.25K R42 J2:8 2 2 2 2 2 2 2 2 2 KNOB LED LOGO L

46、ED STANDBY LED 8 J4:10 8 J4:1 8 J4:11 8 J4:5 8 J4:8 ML COM 9 J3:1 9 J3:9 GND 9 J3:11 9 J3:5 9 J3:8 9 J3:7 9 J3:4 9 J3:2 PWR ON 2 J2:11 5V J2:1 5V 5V 5V 0V 475 R19 221 R13 221 R14 .6V +5V D1 5V 1.5K R25 8.25K R26 1.5K R33 1.5K R36 8.25K R37 8.25K R32 1.5K R35 8.25K R34 J2:7 J2:5 J2:14 J8:1 J8:2 ML OF

47、F KNOB J3:14 9 J3:18 LED LED COM 8 J4:14 8 J4:15 8 J4:17 8 J4:18 ML OFF KNOB LED LED COM GND J6:17J6:1 J6:16 J6:7J6:10 J6:11 J6:12 ML OFF HOLD KNOB LED LED COM J5:2 GND J5:12J5:9J5:3 J5:8 J5:7 ML OFF HOLD KNOB J5:18 LED LED COM HOLD BREAKAWAY ML COM HOLD HOLD J2:15 J2:17 J2:18 J2:6 LOGO LED LED COM 1 1 J2:4 CAL 2 CAL 1 2 2 100k 13 2 CCW R1 METER CAL 1.5K R29 1.5K R31 1.5K R41 1.5K R39 8.25K R28 8.25K R30 8.25K R40 8.25K R38 88888 99999 G 5 2 DS5:2 B 6 1 DS5:3 G 5 2 DS6:2 B 6 1 DS6:3 G 5 2 DS7