Arcam-P1000 pwramp.pdf part of Arcam (Cambridge) P1000 Arcam-P1000 pwramp.pdf, power amplifier text manual preview

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DiVA
P1000 Amplifier

Service Manual
Issue 1.0

ARCAM
Bringing music & movies to life

Arcam P-1000 Amplifier Board functions and operation
The power amplifiers in the P-1000 are of class H design and use a three rail power supply for high operating efficiency. These amplifier boards are field replaceable and the unit can be safely operated with one or more boards out of the unit. The operating descriptions below are divided into three groups. The input and signal control section. The amplifier section and the power switching section. Signal net name references as they appear in the schematic are designated here in bold type. The line level audio path of the P-1000 very simple and short. Unbalanced audio sources are buffered by U6-A and summed with the balanced input from U1-A. The signal then passes through the gain set stage of U6-B and then on to the AMP-IN amplifier drive. The AMP-IN signal is also contoured by U2-A and on to the power switching section via the COMM output. The gain switch S1 works by changing the local feedback around U6-B and has three settings. The "A" gain position provides an overall gain of 31.5 dB and is compatible with other Arcam amplifiers. The "B" setting is for use in THX compliant systems and the low gain "C" position can be used to lower the overall system noise level in installations where the speakers are very close to the listener. Also at the input of the gain set stage are the mute transistor Q1 and the resistive element of the clipping eliminator circuit. When the P-1000 is turned on, the global mute signal at the MUTE input of U3-A is low. This forces its output to +12V which activates the mute transistor Q1 as well as the clipping eliminator circuit through D15. The FLT_OUT from the emitter follower Q24 and also goes high. Q1 then shunts the audio to ground and R11 goes to a low resistance state. The FLT_OUT passes on out to the channel status display board. When the global mute cycle finishes and the output from U3-B goes low, Q1 turns off and passes the audio signal immediately but the resistive element R11 has a slow release time which allows the audio output to ramp up in a controlled manner. The local mute circuit of U3-B also has two other inputs. The thermal shutdown circuit of U2-B and R22 monitor the heatsink temperature of the amplifier. If the HS temperature exceeds approximately 95 Deg C, the output of U2-B goes high and toggles the local mute circuit on. Because of the hysteresis around U2-B, the thermal protection will remain active until the amplifier has cooled down approximately 20 Deg below the trip point. The second input is the PROT line from the amplifier. This is a fast acting input which goes to a low impedance state if a short circuit is detected at the amplifier output. The clipping eliminator circuit has two inputs. The AMPOUT monitors the amplifier output signal and the OPA-OUT signal from the output of U1-B. The OPA-OUT line is inside the overall amplifier feedback loop and is very sensitive to any differences between the input and output signals in the audio path. If the unit is driven into clipping the difference signal from these two lines is amplified and used to drive the CLM5000 LDR. This causes the resistance of R11 to decrease and work as part of a voltage divider against R85 or R5. The effect of this is to reduce the signal level going into the amplifier thereby reducing the output clipping to a very low value. Typically this circuit will hold the THD to less than 1% with 10dB of overdrive at the input.

Arcam P-1000 Amplifier Board functions and operation
In the amplifier portion of the board, Q2 acts as a level shifter and drives the class A transistor Q13. The voltage source for the class A stage is from Q14 and is regulated by Z1. This constant voltage causes Q13 to act as a constant current source and stabilizes the output transistor bias regardless of changes in the AC mains. The class A drive voltage is also removed from Q13 anytime the local or global mute circuits are activated. In the un-muted state CLA-MUTE is 12V. When activated this line goes high to +12V which removes Q14s base voltage when Q25 is turned on. The bias temperature tracking is from diode D8 and the initial setting is made by adjusting RP1 for a voltage reading of .5 to 1.0 mV across either R51-R53 or R44-R45 after the unit has been on and running for a minute or two. A better method of setting the bias is to use a distortion analyzer and adjust the amplifier output for 1 volt at 2 kHz into an 8 Ohm load. After the amplifier has been on and allowed to warm up for a few minutes, adjust RP1 until the crossover notch just starts to disappear. The output section is a complimentary feedback pair topology with Q9 and Q7,Q8 in the positive leg and Q12 and Q10,Q11 in the negative leg. The advantage of this configuration is higher peak output voltage and, because the emitters of the driver transistors become the effective output of the amplifier, crossover discontinuities are very fast and almost negligible without any bias setting. With the bias correctly adjusted the transition through the crossover region is seamless and the very low bias current holds the output stage dissipation to approximately 1 watt. Output stage V-I limiting is through Q5 and Q6. The short circuit current limit is approximately 10 Amps and is set to this high value in order to handle the out of phase currents in highly reactive loads. At high output voltages, however, R37 increases this limit to 20 Amps. For short circuit loads where the current is very high but the output voltage is close to zero, Q4 is turned on and the PROT line activates the local signal mute circuit. This mute removes the output signal momentarily and then releases, cycling on/off until the fault is removed. To verify the short circuit protection, drive the amplifier to an output of 5 volts or more and short the output terminals together. The shorted channel output should cycle on and off and the front panel status indicator should toggle between green and amber. To increase the efficiency and reliability of the amplifier, multiple voltage rails are made available to the output transistors. This addition of variable power supply voltages to the amplifier circuit creates what is known as a class H amplifier. In conventional amplifiers the output devices are simultaneously exposed to high voltage and high current. The product of this current and voltage is dissipated in the form of heat. To make matters worse, the efficiency of the amplifier is the poorest at lower power output levels. To side step this problem the class H amplifier greatly improves the efficiency by running at low power supply voltages when the signal level is low. The operating voltages increase only as required by the program material. Another benefit is in the form of reliability under demanding conditions. Because the output transistors are never exposed to the maximum positive and negative supply voltages at the same time, the amplifier is able to withstand both very high current, under short circuit conditions, as well as highly reactive currents presented by some speakers. With the overall efficiency gain, amplifier heatsink requirements are reduced by half.

Arcam P-1000 Amplifier Board functions and operation
With the amplifier operating at low output levels (<20 W) only the +/-20V low voltage rails are used. As the output requirements increase, the COMM signal from U2-A also increases and the peak value of this signal is compared to the low rail reference voltage at the comparators U4-A and U5-B. When the peak value of the COMM signal exceeds the reference the comparators will toggle on and the middle rail voltage will be supplied to the amplifier. For a positive signal, Q15 and Q17 turn on the 40 volt supply and on the negative swing Q23 and Q19 supply 40 volts. As the requirements continue to increase the same sequence takes place for the +/- 60 volt supplies. U4-B, Q16 and Q18 supply the positive voltage and U5-A, Q22, Q20 and Q21 supply the negative voltage. The power diodes D7,D23 and D24,D25 isolate the high voltage supplies from the lower voltage supplies. Under short circuit conditions the COMM line signal goes to zero because of the mute drive to Q1 and only the low voltage supply is present at the output transistors. To verify the correct operation of the commutator circuits drive the amplifier to 30-35 Vrms into an 8 Ohm load at 200 Hz and observe the positive and negative supplies. The positive rail voltage is monitored at the emitter of Q18 or at the junction of D7, D23 (cathode ends). To monitor the negative rail use TP2 which is connected to the junction of D24, D25. The waveforms should appear as shown in figure XX. If any of the rail voltages fail to operate, the output of the amplifier will be limited to a lower value by the clipping eliminator circuit. Because of this and the fact that the output will still be a sine wave, it may be necessary to remove the 8 Ohm load to determine which rail is not switching.

FIGURE 1

POSITIVE RAIL SWITCHING WAVEFORM

FIGURE 2

NEGATIVE GOING WAVEFORM

FIGURE 3

BIAS CONTROL AT MAX CCW POSITION

FIG 4 BIAS PROPERLY ADJUSTED (COLD)

P-1000 Display Board functions and operation.
The P-1000 display functions are divided into two separate blocks, power on/off and channel status indications. The power on/off LED indicators are driven by the Standby Power supply on the main board and are active any time the P-1000 is connected to the AC mains supply and the rear panel power switch is on. The Channel Status LEDs receive power from both the Main power supply and from each individual amplifier channel. With the P-1000 connected to the AC mains with the power switch on, the PWR-LED line is high which turns on the red Standby LED on. It also turns Q2 on which forces the run LED off. When the unit is turned on via the front panel power button or the rear panel 12V trigger PWR-LED line goes low and +12V from the main power supply turns on the green run LED. The amplifier channel status LEDs, at turn on, are driven by the FLT lines and show amber for approximately 2 seconds. When the turn on mute cycle has finished the FLT lines go low and the LEDs receive their power from the 12V supply and are illuminated green. If one of the amplifier channels becomes hot enough to thermal out the FLT line for that channel will go high until that amplifier channel cools down. During the off time the status led will show amber. Other channels are not affected by this action. If one of the amplifier channels has a short circuit across the output terminals the FLT line will be activated momentarily and the status LED will alternate between amber and green. This amber/green cycle will continue as long as the fault is present and the amplifier is trying to run program material. When the fault is removed the LED for that channel will return to a steady green. No other channels are affected by this action. In the event of a DC offset fault from the amplifier, the OFFSET line goes high which turns on both LEDs and the color changes to a steady amber. A DC fault condition will also shut down the main power supply. This removes the power to the status LEDs and all the channel indicators will go off. Although it very unlikely that a DC fault will ever take place, it does trigger a latching circuit that receives its power from the standby supply. This means that it will be unaffected by the front power button or the rear panel 12V trigger. The only way to clear this condition is to completely remove the power either by turning the unit off via the rear panel power switch or by disconnecting the AC mains cord for a few minutes. This allows the offset latching circuit to reset to the off state.

Arcam P-1000 Main Board functions and operation
In addition to the high current supply voltages for the seven amplifier channels, the Main board also contains the circuitry for power on/off control, DC fault protection, the standby housekeeping power and other control circuits as well as the bussing interconnections to all channels. Since the P-1000 is a multi rail class H amplifier, the Main board has three high power plus/minus voltage supplies for the amplifier output stages. The +/- 12V for the signal level amplifier circuits is obtained from the +/- 20 volt low rail supply. These 20 volt low rails are also fused for added DC fault protection but under no operational conditions including amplifier output short circuits should these fuses ever fail. The middle (+/40V) and high (+/- 60V) rails are capacitive input filters and require no further explanation. Because the middle and high voltage supplies have no direct discharge path to the output stages when the unit is turned off, Q8 and Q9 form dynamic discharge resistors. This serves two purposes. First it discharges the main bulk capacitors when the unit is off and second, this energy is redirected to the +/- 12-volt supplies which eliminates turn off irregularities. Q8 and Q9 function only for a minute or so when the unit is powered down. The standby power supply is functional at all times when the unit is connected to the AC mains and the rear panel power switch is on. The function of the STBY supply is to provide power for the power on/off logic, display and the DC fault circuit. One additional function is to supply the amplifier circuits with a small (less than 1 volt) DC negative bias which eliminates turn on "pops". This is accomplished through R62 and D15. Because the power requirements of these circuits is so low the power consumption when the P1000 is in the standby mode is less than 2 watts. The DC fault circuit, which includes Q2, 3 and 4, is a bi-directional DC level sensing circuit. The output of each amplifier is monitored through the CH1 through CH7 R-C networks. If a positive going DC voltage is present on any of these inputs, Q2 becomes forward biased, turns on and forces Q3 on. Likewise, for a negative going DC fault Q2 operates in a common base mode with R12 holding the base close to ground potential while the emitter goes negative and the circuit is again activated. Because of the positive feedback through R26, Q3 latches on and, through Q4, pulls the base of the emitter follower Q7 to ground. This action shuts down the Opto coupler U3 and the main power supply Triac goes to the off state and turns the P-1000 off. The OFFSET line drives the global mute circuit and the power LED will show as amber. The unit will remain in this shutdown mode until all power is removed for a minute or so until the standby voltage drops close to zero. If the offset circuit is activated, LED D12 on the main board will be on and serve as a visual indication that the unit is in shutdown mode. Shorting TP1 and TP2 together on the main board will force the circuit to reset. The power on/off switching can be done three ways. Turning the rear panel switch on or off, pressing the front panel power button (assuming the rear panel switch is on) or by applying a 12 volt DC trigger to the rear panel 3.5 MM jack. The logic switching functions of the P-1000 are then controlled by U1 and U2 which maintain a zero crossing on/off drive to the main triac.

Arcam P-1000 Main Board functions and operation
To perform these functions an AC mains sine wave from the standby transformer secondary is applied to the input of U2-D. This LV_AC_IN signal is then half wave rectified and the output of gate U2-D is a square wave clock signal to the CLK input of U-1B. By using a clock signal derived from the AC mains, zero crossing turn on/off is assured regardless of which method is used. If the unit is turned on via the rear panel power switch the SET input of U1-A goes high and the Q output becomes the DATA input to U1-B whose Q output goes high on the first clock cycle from U2-D. This high output then turns on the Optocoupler U3 and the main triac is gated on thereby turning ¯ on the main power. If the front panel power button is pressed again, the Q output is clocked through the DATA input of U1-A causing its Q output to go low. This low state is passed through U1-B, on to the Opto and the unit is turned off. Since U1-A is a divide by 2 circuit subsequent button presses will switch the unit on and off. The PWR_LED line from U1-A drives the front panel standby LED and the PWR_ON line is used to supply power to Q5 in the power on/off mute circuit. The rear panel 12 volt remote input is independent of the front panel power button and will cycle the unit on or off depending on the whether a 12 volt input is present. The remote switching, unlike the front panel switching, is voltagelevel dependent and operates by forcing a SET or RESET on U1-A. The main power triac switching, however, is still controlled by the clock signal from U2-D. The rear panel control also incorporates a time delay of 1-2 seconds through the R-C pair R2-C4. This allows for a staggered turn on sequence if an entire system is powered on by a single 12 volt trigger source. Because triacs and SCRs remain conductive only when a current is flowing through them, a constant load circuit is included on the transformer secondary windings. The RC network of R64 on the 20 volt winding and the 3 uF 250V capacitor across the 60 volt windings correct this by holding the triac on through the zero crossing point. This equalizes the transformer flux and prevents mechanical transformer "buzz" due to unequal conduction cycles across the windings. When the P-1000 is turned on, the global mute circuit is activated by the network around Q5. Initially Q5 will be off and the MUTE output will be 12 V. This mute voltage is distributed to all seven channels and will activate the local mute circuit on each of the amplifier boards. As C30 discharges, the voltage eventually exceed the zener drop of Z4 and turn Q5 on which then toggles high for a MUTE line voltage of 4V. When the global mute line is high (-4V), the individual channels are active and will pass a signal. The FLT outputs from the amplifier boards are used to provide the channel status LED drive. If any amplifier channel is in the muted state its FLT output is high and the corresponding channel status LED will show as amber. As shipped the P-1000 is meant to operate at either 230Vac or 120Vac. To change the AC mains operating voltage it is necessary to replace the main power transformer with one of the desired voltage. In addition it is also required that the standby transformer primary windings are rewired to accept the new voltage. JP1,JP2 and JP3 determine which voltage the standby transformer is set for. For 230Vac operation JP1 is used and JP2 and 3 are removed. For 120Vac operation JP2 and 3 are installed and JP3 is removed. The fuse F1 is an F50mAL type and remains the same value for either voltage.

ARCAM P-1000 AMPLIFIER BOARD
Reference No CAPACITOR C1 C45 C2 C3 C4 C22 C23 C39 C42 C5 C6 C7 C25 C36 C37 C43 C46 C47 C48 C8 C9 C10 C32 C33 C34 C35 C40 C41 C11 C15 C12 C13 C49 C16 C26 C27 C28 C29 C17 C18 C19 C20 C21 C24 C30 C31 C38 C44 C50 C51 DIODE D1 D2 D3 D4 D5 D6 D9 D10 D11 D12 D7 D23 D24 D25 D8 D13 D16 D19 D20 D21 D22 TRANSISTOR Q1 Q2 Q4 Q5 Q15 Q16 Q22 Q23 Q3 Q14 Q6 Q20 Q24 Q25 Q7 Q8 Q9 Q13 Q10 Q11 Q12 Q17 Q19 Q18 Q21 RESISTOR C14 R1 Part No 205-813-4 210-311-4 206-529-4 203-038-4 205-509-4 203-002-4 203-027-4 203-015-4 203-019-4 205-505-4 203-031-4 205-317-4 201-125-4 201-013-4 203-036-4 201-015-4 224-012-3 201-015-4 203-043-4 201-121-4 302-001-4 304-008-0 301-001-1 302-006-0 301-001-4 311-015-0 311-010-0 311-003-0 311-009-0 312-014-0 312-012-0 312-015-0 312-013-0 314-001-0 312-001-0 312-002-0 103-051-4 109-289-4

REVISION A Description CAP EL RADIAL 47uF 100V CAP EL NP 22uF 25V CAP EL RADIAL .22uF 50V CAP CERAMIC 330pF 1KV 20% CAP EL RADIAL 10uF 50V CAP CERAMIC 5pF 1KV 20% CAP CERAMIC 100pF 1KV 20% NP0 CAP CERAMIC 27pF 1KV 20% NP0 CAP CERAMIC 47pF 1KV 20% CAP EL RADIAL 2.2uF 50V CAP CERAMIC 180pF 1KV 20% NP0 CAP EL RADIAL 220uF 25V CAP MYLAR .1uF 100V 10% CAP MYLAR .01uF 50V 10% CAP CERAMIC 270pF 1KV 20% CAP MYLAR .015uF 50V 10% CAP CERAMIC 22pf 50V 20% AX .35" CAP MYLAR .015uF 50V 10% CAP CERAMIC 470pF 1KV 20% NOT USED CAP MYLAR .047uF 100V 10% DIODE 1N4148 SIGNAL .4" DIODE FAST REC 5A DIODE 4004 1A 400V UN-PREP DIODE FDH400 HV SIGNAL .4" RECT 1N4004 1A 400V .4" TRANS 2SC2878 NPN TO-92 ECB TRANS MPSA56 PNP TO-92 TRANSISTOR MPSW06 NPN 1W TRANS MPSA06 NPN TO-92 TRANSISTOR MJW21193 PNP PWR 250V TRANS 2SC4793 NPN TO220 TRANSISTOR MJW21194 NPN PWR 250V TRANS 2SA1837 PNP TO-220 TRANSISTOR IRFZ34 PWR FET TRANSISTOR TIP35C NPN PWR 100V TRANSISTOR TIP36C PNP PWR 100V RES CF 1/4W 5% 130 OHM .4" RES MF 1/4W 1% 10.0K .4" REVISION A Description RES MF 1/4W 1% 10.0K .4" RES MF 1/4W 1% 10.0K .4"

ARCAM P-1000 AMPLIFIER BOARD
Reference No RESISTOR R2 R3 Part No 109-289-4 109-289-4

Reference No R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 R15 R16 R17 R18 R19 R20 R21 R23 R24 R25 R26 R27 R28 R29 R30 R31 R32 R33 R34 R35 R36 R37 R38 R39 R40 R41 R42 R43 R44 R45 R46

Part No 109-289-4 103-072-4 103-094-4 103-107-4 109-318-4 103-113-4 103-103-4 325-004-0 103-064-4 109-348-4 103-073-4 103-107-4 103-072-4 103-103-4 103-100-4 103-083-4 103-083-4 103-103-4 103-072-4 109-219-4 103-136-4 109-235-4 103-096-4 103-073-4 103-101-4 103-028-4 116-019-0 116-019-0 109-354-4 103-060-4 103-080-4 103-039-4 105-088-5 103-059-4 103-059-4 103-045-4 103-052-4 103-008-4 103-008-4 114-004-0 114-004-0 103-064-4

Description RES MF 1/4W 1% 10.0 KOHM .4" RES CF 1/4W 5% 1K .4" RES CF 1/4W 5% 8.2K .4" RES CF 1/4W 5% 30K .4" RES MF 1/4W 1% 20.0K .4" RES CF 1/4W 5% 51K .4" RES CF 1/4W 5% 20K .4" PHOTO RES RES CF 1/4W 5% 470 OHM .4" RES MF 1/4W 1% 41.2K .4" RES CF 1/4W 5% 1.1K .4" RES CF 1/4W 5% 30K .4" RES CF 1/4W 5% 1K .4" RES CF 1/4W 5% 20K .4" RES CF 1/4W 5% 15K .4" RES CF 1/4W 5% 3K .4" RES CF 1/4W 5% 3K .4" RES CF 1/4W 5% 20K .4" RES CF 1/4W 5% 1K .4" RES MF 1/4W 1% 1.87K .4" RES CF 1/4W 5% 470K .4" RES MF 1/4W 1% 2.74K .4" RES CF 1/4W 5% 10K .4" RES CF 1/4W 5% 1.1K .4" RES CF 1/4W 5% 16K .4" RES CF 1/4W 5% 15 OHM .4" RES 1W MOF 5% 1.6K RES 1W MOF 5% 1.6K RES MF 1/4W 1% 47.5K .4" RES CF 1/4W 5% 330 OHM .4" RES CF 1/4W 5% 2.2K .4" RES CF 1/4W 5% 43 OHM .4" RES CF 1/2W 5% 4.7K OHM .5" RES CF 1/4W 5% 300 OHM .4" RES CF 1/4W 5% 300 OHM .4" RES CF 1/4W 5% 75 OHM .4" RES CF 1/4W 5% 150 OHM .4" RES CF 1/4W 5% 2 OHM .4" RES CF 1/4W 5% 2 OHM .4" RES 5W WW 5% .2 OHM RES 5W WW 5% .2 OHM RES CF 1/4W 5% 470 OHM .4" REVISION A Description RES CF 1/4W 5% 470 OHM .4" RES CF 1/4W 5% 82 OHM .4" RES CF 1/4W 5% 110 OHM .4" RES CF 1/4W 5% 270 OHM .4" RES 5W WW 5% .2 OHM RES CF 1/4W 5% 2 OHM .4" RES 5W WW 5% .2 OHM RES CF 1/4W 5% 2 OHM .4" RES CF 1/4W 5% 20K .4"

ARCAM P-1000 AMPLIFIER BOARD
Reference No R47 R48 R49 R50 R51 R52 R53 R54 R55 Part No 103-064-4 103-046-4 103-049-4 103-058-4 114-004-0 103-008-4 114-004-0 103-008-4 103-103-4

Reference No R56 R57 R58 R59 R60 R61 R62 R63 R64 R65 R66 R67 R68 R69 R70 R71 R72 R73 R74 R75 R76 R77 R78 R79 R80 R81 R82 R83 R84 R85 R86 R87 R88 R89 R90 R91

Part No 111-004-0 103-072-4 103-072-4 103-072-4 103-096-4 103-074-4 116-019-0 103-086-4 103-072-4 103-089-4 103-072-4 103-089-4 103-072-4 103-072-4 116-010-0 103-104-4 103-052-4 103-103-4 109-220-4 103-072-4 103-098-4 103-103-4 109-220-4 103-072-4 109-289-4 103-096-4 103-103-4 103-055-4 109-228-4 109-289-4 109-318-4 103-080-4 116-018-0 103-104-4 103-103-4 103-113-4

Description RES MOF 2W MOX 5% 10 OHM RES CF 1/4W 5% 1K .4" RES CF 1/4W 5% 1K .4" RES CF 1/4W 5% 1K .4" RES CF 1/4W 5% 10K .4" RES CF 1/4W 5% 1.2K .4" RES 1W MOF 5% 1.6K RES CF 1/4W 5% 3.9K .4" RES CF 1/4W 5% 1K .4" RES CF 1/4W 5% 5.1K .4" RES CF 1/4W 5% 1K .4" RES CF 1/4W 5% 5.1K .4" RES CF 1/4W 5% 1K .4" RES CF 1/4W 5% 1K .4" RES CF 1W 5% 1.2K .4" RES CF 1/4W 5% 22K .4" RES CF 1/4W 5% 150 OHM .4" RES CF 1/4W 5% 20K .4" RES MF 1/4W 1% 1.91K .4" RES CF 1/4W 5% 1K .4" RES CF 1/4W 5% 12K .4" RES CF 1/4W 5% 20K .4" RES MF 1/4W 1% 1.91K .4" RES CF 1/4W 5% 1K .4" RES MF 1/4W 1% 10.0 KOHM .4" RES CF 1/4W 5% 10K .4" RES CF 1/4W 5% 20K .4" RES CF 1/4W 5% 200 OHM .4" RES MF 1/4W 1% 9.76K .4" RES MF 1/4W 1% 10.0K .4" RES MF 1/4W 1% 20.0K .4" RES CF 1/4W 5% 2.2K .4" RES MOX 5.1 OHM 1W RES CF 1/4W 5% 22K .4" RES CF 1/4W 5% 20K .4" RES CF 1/4W 5% 51K .4" REVISION A Description RES CF 1/4W 5% 51K .4" RES CF 1/4W 5% 12K .4" RES MF 1/4W 1% 21.5K .4" RES CF 1/4W 5% 150K .4" RES CF 1/4W 5% 150K .4" RES CF 1/4W 5% 150 OHM .4" RES MF 1/4W 1% 13.3K .4" RES CF 1/4W 5% 2K .4" RES CF 1/4W 5% 10 OHM .4" RES CF 1/4W 5% 1K .4" RES CF 1/4W 5% 510 OHM .4" RES CF 1/4W 5% 300 OHM .4" RES CF 1/4W 5% 300 OHM .4" RES CF 1/4W 5% 5.1K .4" RES CF 1/4W 5% 910 OHM .4"

ARCAM P-1000 AMPLIFIER BOARD
Reference No R92 R93 R95 R96 R97 R98 R99 R101 R102 R103 R104 R105 R106 R107 R110 Part No 103-113-4 103-098-4 109-321-4 103-124-4 103-124-4 103-052-4 109-225-4 103-079-4 103-024-4 103-072-4 103-065-4 103-059-4 103-059-4 103-089-4 103-071-4

Reference No IC U1 U2 U3 U6 U4 U5 ZENER Z1 Z2 Z3 Z4 L1 CONNECTOR J1 J2 J3 J5 CON1 MISC S1 TP1 TP2 TP3 TP4 RP1 R22 JACK PLATE

Part No 322-010-0 322-007-0 322-029-0 303-025-0 303-004-0 303-010-0 353-007-0 454-008-0 446-020-0 421-010-0 445-016-0 470-023-0 445-015-0 147-001-0 170-001-4 633-301-0

Description IC TLO82 DUAL OPAMP IC 4560 DUAL OPAMP DIP IC LM393 DUAL COMP DIODE ZEN 4758 54V .4" DIODE ZEN 4738 8.2V .4" DIODE ZEN 4754 39V .4" INDUCTOR 6UH AXIAL XLR FEMALE R/A PCB MT TYPE A RCA JACK DUAL VERTICAL FASTON 250 CONN 13 PIN/ST/ .156 TIN SWITCH SLIDE SP3T HORZ TEST POINT 1 PIN POT ROTARY 10mm 5K H-ADJ THERMISTOR 10K NTC .4" INPUT JACK MTG PLATE

ARCAM

P-1000 DISPLAY BOARD Part No 307-010-0 302-001-4 307-010-0 311-009-0 103-024-4 103-024-4 103-024-4 103-024-4 103-024-4 103-024-4 103-024-4 103-076-4 103-076-4 103-076-4 103-076-4 103-076-4 103-076-4 103-076-4 103-112-4 103-076-4 103-071-4 103-076-4 103-112-4 445-023-0 415-024-0 470-024-0 561-006-0 541-022-0 581-053-0 447-004-0 533-004-0

REVISION A Description DIODE LED YEL/GRN DIODE 1N4148 SIGNAL .4" DIODE LED YEL/GRN TRANS MPSA06 NPN TO-92 RES CF 1/4W 5% 10 OHM .4" RES CF 1/4W 5% 10 OHM .4" RES CF 1/4W 5% 10 OHM .4" RES CF 1/4W 5% 10 OHM .4" RES CF 1/4W 5% 10 OHM .4" RES CF 1/4W 5% 10 OHM .4" RES CF 1/4W 5% 10 OHM .4" RES CF 1/4W 5% 1.5K .4" RES CF 1/4W 5% 1.5K .4" RES CF 1/4W 5% 1.5K .4" RES CF 1/4W 5% 1.5K .4" RES CF 1/4W 5% 1.5K .4" RES CF 1/4W 5% 1.5K .4" RES CF 1/4W 5% 1.5K .4" RES CF 1/4W 5% 47K .4" RES CF 1/4W 5% 1.5K .4" RES CF 1/4W 5% 910 OHM .4" RES CF 1/4W 5% 1.5K .4" RES CF 1/4W 5% 47K .4" HDR 10 x 2 .1 RA GOLD RIBBON CABLE SPST MOMETARY CONTACT RIGHT ANGLE MTG BRACKET USE WITH D1-D7 PWR ON/OFF 3.5 MM MONO FOR 12V TRIGGER .25" NYLON STANDOFF FOR PCB MTG

Reference No DIODE D1 D9 D10 D11 D2 D3 D4 D5 D6 D7 D8 TRANSISTOR Q1 Q2 RESISTOR R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 R15 R16 R17 R18 R19 MISC J1 RB1-RB2 SW1 BRACKET RA SPACER BUTTON JACK STANDOFF

ARCAM P-1000 MAIN BOARD
Reference No CAPACITOR C1 C2 C3 C9 C51 C4 C10 C30 C5 C55 C6 C7 C8 C11 C12 C33 C34 C35 C36 C37 C38 C39 C40 C41 C42 C43 C44 C15 C16 C17 C18 C19 C20 C21 C22 C23 C24 C25 C26 C27 C28 C29 C31 C32 C50 C45 C46 C47 C48 C49 C52 C53 C54 C63 C56 R4 - CAP USED IN THIS POSITION DIODE D1 D2 D3 D6 D7 D8 D9 D10 D15 D20 D21 D22 D23 D24 D25 D27 D29 D41 D4 D5 D11 D13 D14 D26 D28 D30 D32 D33 D40 D12 D16 D17 D18 D19 D31 D34-D39 Z1 Z2 Z3 Z4 Z5 Z6 Z7 TRANSISTOR Q1 Q6 Q2 Q4 Q7 Q3 Q5 Q8 Q9 Part No 202-101-4 202-124-4 205-509-4 205-315-4 205-517-1 210-307-4 205-513-4 240-057-4 205-781-0 205-580-4 205-422-4 240-025-0 205-221-4 205-505-4 206-503-4 205-517-1 202-113-4 206-503-4

REVISION A Description CAP MYLAR .001uF 100V 5% CAP MYLAR .082uF 100V 5% CAP EL RADIAL 10uF 50V CAP EL RADIAL 100uF 25V CAP EL RADIAL 220uF 50V CAP EL NP 47uF 25V CAP EL RADIAL 47uF 50V CAP CERAMIC .0022 250V CAP EL RADIAL 10000uF 80V CAP EL RADIAL 15000uF 50V CAP EL RADIAL 2200uF 35V CAP UL-CSA LINE CAP CAP EL RADIAL 1000uF 16V CAP EL RADIAL 2.2uF 50V CAP EL RADIAL 1.0uF 50V CAP EL RADIAL 220uF 50V CAP MYLAR .01uF 100V 5% CAP EL RADIAL 1.0uF 50V

302-001-4

DIODE 1N4148 SIGNAL .4"

301-001-4 307-001-0 304-008-0 N/A N/A 303-002-0 303-001-0 303-004-0 303-001-0

RECT 1N4004 1A 400V .4" DIODE LED RED DIODE FAST REC 5A NOT USED NOT USED DIODE ZEN 4742 12V 1W .4" DIODE ZEN 4740 10V .4" DIODE 4738 ZEN 8.2V 1W .4" DIODE ZEN 4740 10V .4"

311-011-0 311-009-0 311-010-0 312-012-0 312-013-0

TRANS 2N4401 NPN TO-92 TRANS MPSA06 NPN TO-92 TRANS MPSA56 PNP TO-92 TRANS 2SC4793 NPN TO220 TRANS 2SA1837 PNP TO-220

ARCAM P-1000 MAIN BOARD Reference No RESISTOR R1 R2

Part No 106-001-0 103-120-4

REVISION A Description RES CF 1/2W 5% 2.2M RES CF 1/4W 5% 100K .4"

Reference No R3 R4 SEE CAPACITORS R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 R15 R16 R17 R18 R19 R20 R21 R22 R23 R24 R25 R26 R27 R28 R29 R30 R31 R32 R33 R34 R35 R36 R37 R38 R39 R40 R41

Part No 103-123-4 103-136-4 103-136-4 103-113-4 103-103-4 103-089-4 103-096-4 103-081-4 103-103-4 103-121-4 103-096-4 103-096-4 103-116-4 103-116-4 103-116-4 103-116-4 103-116-4 103-113-4 103-113-4 103-113-4 103-103-4 103-103-4 103-096-4 103-089-4 103-111-4 103-092-4 103-111-4 103-092-4 103-111-4 103-092-4 103-111-4 103-092-4 103-111-4 103-072-4 103-024-4 103-024-4 101-096-0 103-111-4

Description RES CF 1/4W 5% 130K .4" RES CF 1/4W 5% 470K .4" RES CF 1/4W 5% 470K .4" RES CF 1/4W 5% 51K .4" RES CF 1/4W 5% 20K .4" RES CF 1/4W 5% 5.1K .4" RES CF 1/4W 5% 10K .4" RES CF 1/4W 5% 2.4K .4" RES CF 1/4W 5% 20K .4" RES CF 1/4W 5% 110K .4" RES CF 1/4W 5% 10K .4" RES CF 1/4W 5% 10K .4" RES CF 1/4W 5% 68K .4" RES CF 1/4W 5% 68K .4" RES CF 1/4W 5% 68K .4" RES CF 1/4W 5% 68K .4" RES CF 1/4W 5% 68K .4" RES CF 1/4W 5% 51K .4" RES CF 1/4W 5% 51K .4" RES CF 1/4W 5% 51K .4" RES CF 1/4W 5% 20K .4" RES CF 1/4W 5% 20K .4" RES CF 1/4W 5% 10K .4" RES CF 1/4W 5% 5.1K .4" RES CF 1/4W 5% 43K .4" RES CF 1/4W 5% 6.8K .4" RES CF 1/4W 5% 43K .4" RES CF 1/4W 5% 6.8K .4" RES CF 1/4W 5% 43K .4" RES CF 1/4W 5% 6.8K .4" RES CF 1/4W 5% 43K .4" RES CF 1/4W 5% 6.8K .4" RES CF 1/4W 5% 43K .4" RES CF 1/4W 5% 1K .4" RES CF 1/4W 5% 10 OHM .4" RES CF 1/4W 5% 10 OHM .4" RES CF 1/8W 5% 10K .35" RES CF 1/4W 5% 43K .4"

ARCAM P-1000 MAIN BOARD
Reference No R42 R43 R44 R45 R46 R47 R48 Part No 103-123-4 103-072-4 103-136-4 103-103-4 103-089-4 103-083-4 103-024-4

REVISION A Description RES CF 1/4W 5% 130K .4" RES CF 1/4W 5% 1K .4" RES CF 1/4W 5% 470K .4" RES CF 1/4W 5% 20K .4" RES CF 1/4W 5% 5.1K .4" RES CF 1/4W 5% 3K .4" RES CF 1/4W 5% 10 OHM .4"

Reference No R49 R50 R51 R52 R53 R54 R55 R56 R57 R58 R59 R60 R61 R62 R63 R64 R65 R66 R67 R68 R69 R70 R71 R72 R73 R74 R75 R100 R101 IC U1 U2 U3 U4 U5

Part No 103-111-4 103-092-4 103-116-4 103-111-4 103-092-4 103-072-4 103-096-4 103-076-4 103-092-4 103-123-4 103-123-4 103-123-4 103-123-4 103-082-4 103-048-4 114-007-0 116-006-0 115-003-6 105-100-4 105-100-4 114-007-0 114-008-0 117-002-6 117-002-6 114-007-0 114-007-0 103-089-4 103-116-4 103-123-4

Description RES CF 1/4W 5% 43K .4" RES CF 1/4W 5% 6.8K .4" RES CF 1/4W 5% 68K .4" RES CF 1/4W 5% 43K .4" RES CF 1/4W 5% 6.8K .4" RES CF 1/4W 5% 1K .4" RES CF 1/4W 5% 10K .4" RES CF 1/4W 5% 1.5K .4" RES CF 1/4W 5% 6.8K .4" RES CF 1/4W 5% 130K .4" RES CF 1/4W 5% 130K .4" RES CF 1/4W 5% 130K .4" RES CF 1/4W 5% 130K .4" RES CF 1/4W 5% 2.7K .4" RES CF 1/4W 5% 100 OHM .4" RES 5W WW 5% 240 OHM RES MOX 2W 5% 240 OHM RES MOX 3W 5% 820 OHM RES CF 1/2W 5% 15K .6" RES CF 1/2W 5% 15K .6" RES 5W WW 5% 240 OHM RES 5W WW 5% 510 OHM RES MOX 2W 5% 820 OHM RES MOX 2W 5% 820 OHM RES 5W WW 5% 240 OHM RES 5W WW 5% 240 OHM RES CF 1/4W 5% 5.1K .4" RES CF 1/4W 5% 68K .4" RES CF 1/4W 5% 130K .4"

321-002-0 321-009-0 325-002-0 324-002-0 324-001-0

Dual D-Flip-Flop IC4093 QUAD NAND GATE IC MCO3011 OPTOCOUPLER DIP6 IC 7912 LINEAR REG 12V NEG IC 7812 LINEAR REG 12V POS

ARCAM P-1000 MAIN BOARD Reference No MISC CON7-10 14 20 25 F1 F2 F3 IND1 J1 JP1 JP2 JP3 T1 TP1 TP2

Part No 444-048-0 461-011-0 461-009-0 353-007-0 445-022-0 119-001-4 354-100-0 445-015-0

REVISION A Description CON 156 RA ENTRY 12P FUSE HOLDER PCB 5MM FUSE CLIP ATC INDUCTOR 6UH AXIAL HDR 10Px2 .1 GOLD JUMPER 1/4W BODY .4" PREP XFMR 30V CT PCB MNT TEST POINT 1 PIN

ARCAM P-1000
Item 1 15 20 25 25 30 35 40 45 50 55 60 65 70 75 80 90 95 105 110 125 130 135 140 145 150 155 165 180 185 195 200 215 220 220 230 235 240 255 265 270 305 315 330 335 Part Description

FINAL ASSEMBLY Part No

REVISION A Where Used
SUPPLIED WITH TRANSFORMER SUPPLIED WITH TRANSFORMER SUPPLIED WITH TRANSFORMER US/CAN MODEL UK/EUR MODEL XFMR MTG PLATE USE WITH TRANSFORMER SUPPLIED WITH TRANSFORMER

HEX NUT 10MM LOCATING WASHER RUBBER MTG GASKET TRANSFORMER 800VA 115V TRANSFORMER 800VA 230V NUT 8-32 NYLOCK MTG PLATE, TRANSFORMER BOLT 10 x 115 MM FOOT SCREW SM #6 x 1/4 SCREW 8-32 x 1/2" PH WELL NUT 8-32 WASHER #8 FLAT SCREW 8-32 x 3/4 PH SCREW 6-32 x 1/4 PH FLEX TUBING 5/8" x 7.5" FUSE T10AL MDA 10 SILPAD PRESSURE PLATE SCREW 6-32 x 1/2 PH MAIN BOARD KEP NUT #8 RECTIFIER 35A BR CHASSIS, BLACK LINE FILTER FERRITE CORE SCREW SM #6 x 3/8 AMP BOARD WASHER #6 INT SPKR TERMINAL ASSY SPEAKER CONN RED SPEAKER CONN BLACK REM 12V JACK PCB FUSE T6.3AL FUSE HOLDER FUSE HOLDER POWER CORD SOCKET BUSS BAR COPPER CAP 3.3UF 250VDC MYLAR WEATHER STRIP FOAM TAPE POWER SW PCB SCREW 4-40 x 3/8 SOC HD TRIAC 35 A BUTTON PLASTIC RIBBON ASSY 20 POS IDC DISPLAY PCB ASSY

356-123-0 356-223-0 523-001-0 631-309-0 583-010-0 508-002-0 502-022-0 527-001-0 511-016-0 502-012-0 502-001-0 404-008-0 463-009-0 402-005-0 631-185-0 502-020-0 731-177-0 521-003-0 325-005-0 635-302-2 351-006-0 508-007-0 731-179-0 512-001-0 444-055-0 527-003-2 527-003-1 731-181-0 463-012-0 451-005-0 451-010-0 431-006-0 631-306-0 221-005-0 030-00X-0 731-181-0 504-002-0 318-001-0 581-046-0 416-029-0 731-181-0

USE WITH BRIDGE RECT XFMR MTG PLATE XFMR MTG PLATE XFMR MTG PLATE USE TO MNT MAIN BD AND REM BD USE OVER AC WIRING US/CAN MODEL USE WITH U4 U5 USE WITH U4-U5 USE WITH PRESS PLATE ON U4 U5 USE WITH BRIDGE RECT MOUNT TO CHASSIS + FACING MAIN BD MOUNT TO XFMR PRIMARY LEADS USE TO MOUNT HS AND FP MAIN BD MTG SCREWS BLACK TOP ROW BOTTOM ROW PART OF DISPLAY BD UK/EUR MODEL US/CAN MODEL UK/EUR MODEL

ATTACH ACROSS XFMR BLUE LEADS USE ALONG TOP EDGE OF CHASSIS PART OF DISPLAY BD USE WITH PWR SW PCB ASSY MOUNT TO MAIN PCB USE WITH PWR SW PCB ASSY

ARCAM P-1000
Item Part Description

FINAL ASSEMBLY Part No
030-007-0 030-002-0 404-003-0

REVISION A Where Used
USE ON INSIDE EDGE OF TOP COVER USE UNDER LARGE CAPS USE WITH AC WIRING

MASKING TAPE 1/2" TAPE DBL BACK FOAM 1/8" SHRINK TUBING .25"

Item

Part Description
WIRE 18GA TEW BLU 3.5" WIRE 18GA TEW BLK 4" WIRE 18GA TEW BLK 5.5" WIRE 18GA TEW BLK 13.25" FASTON FEM 18GA INSULATED FASTON FEM 14GA INSULATED TYWRAP TYWRAP FRONT PANEL BLK FRONT PANEL SILVER DAMPING PLATE TOP COVER, BLACK TOP COVER, SILVER WIRE ASSY 18GA TEW 11.25" WIRE ASSY 18GA TEW 12.25" WIRE ASSY 18GA TEW 12.5" WIRE ASSY 18GA TEW RED 4.25" RIBBON CABLE 20 COND CONNECTOR IDC 20 POS

Part No
413-030-0 413-031-0 413-032-0 413-033-0 421-002-0 421-014-0 584-003-0 584-025-0 606-022-X 606-022-X 631-316-0 635-304-X 635-304-X 704-053-0 704-054-0 704-055-0 704-056-0 415-020-0 444-033-0

Where Used
USE WITH BRIDGE RECT PWR SW TOP TO FUSE END TERM PWR SW BOT TO AC LINE BOT BUSS BAR TO WP18-19 ON MAIN BD

XFMR WIRING LINE FILTER MTG

ATTACH TO INSIDE OF TOP COVER

AC LINE CONN TOP TO MAIN BD "L" AC LINE GND TO MAIN BD "G" FUSE HOLDER SIDE TO MAIN BD "N" USE WITH RED JACKS PART OF 416-029-0 PART OF 416-029-0