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Great service. Fast response. High quality scan. Good price.
Thank you very much!!!
Oleg S.
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Well-scanned, complete manual. Contains the information needed for repair and maintenance.
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It's great to be able to obtain a precious technical information for a real old equipment. The one I got helps me a lot in the area of wiring diagram to repair my antique. PDF gave me clear enough information to find out thr details. Thanks for giving me the oppotunity to be able to access to almost vanished informations.
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Another excellent aquisition. Fine detailed manual. Thanks
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Good quality for the scan, complete, but as usual for Tascam, not so comprehensive !
TX-SR805/SA805 OPERATION CHECK-4
Condition of Protect Mode
The unit will go into Protect mode under the following conditions. (T: Thermal sensor temperature)
1. Thermal condition
Immediately T <= -30 C or Immediately T > 110 C VOLH
2. DC voltage condition
The sum of dc voltage of 7 channel speaker outputs is more than 7 V.
3. Current condition
Protect will be On if speaker output ac current >= 35 A Protect will not be On if speaker output ac current >= 11.7 A This condition is equivalent to OPERATION CHECK-2. Refer to the page 2. Test wave form:
2 msec 2 msec
20 msec
Condition of Power Supply Voltage Control
The power supply voltage(VH, VM or VL) for power amplifiers is changed by the relays: RL6601, 6602, 6611, 6612 on NAPS-9040. VH > VM > VL T: Thermal sensor temperature VOLH: Pin #99 input voltage of Main microprocessor: Q7001 (Refer to SD-4:D5 and SD-8:D2 of Schematic Diagram) This is created by the largest ac voltage in 7 speaker outputs. Conditions: Speaker imp. = 6 or 8 ohm VH: 0V < VOLH < 0.4V and T < 85 C VM: 0.4V < VOLH < 2.0V and T < 85 C VL: 2.0V < VOLH < 3.3V(Vcc) and T < 85 C VL: T > 85 C Speaker imp. = 4 ohm or BTL VM: 0V < VOLH < 0.4V and T < 85 C VL: 0.4V < VOLH < 2.0V and T < 85 C VL: 2.0V < VOLH < 3.3V(Vcc) and T < 85 C VL: T > 85 C
Condition of Cooling Fan Operation
The cooling fan will stop or rotate under the following conditions. Thermal Sensor Temperature(T) 0V 60 C STOP 0.4V STOP 2.0V MID HIGH HIGH HIGH SPEED SPEED SPEED SPEED MID HIGH HIGH SPEED SPEED SPEED 70 C 80 C Note: �VOLH=0.4V� is equivalent to 0.8W(8 ohm, 7 ch) �VOLH=2.0V� is equivalent to Max power(8 ohm, 3 ch)
STOP
LOW MID SPEED SPEED
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