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It was very usefull, it is clear the quality is super, the price I paid is very afordable.
Generally speaking Iam very happy with this company.
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The manual was exactly what I needed, Good quality scans too. superb.
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I am so happy found this site as it consists of so many Manuls and easy to aquire. This onei s exactly what I wanted and much more as it has info on not only how to use the tuner but how to repair it as well. I will come here 1st before purchasing else where! Thanks owner-manual.com!
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Top class product, I printed it out on A3 paper and it is clear and very easy to follow.
Cheaper than buying a new radio!
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is part of the manual is very useful for repairing
Here are circuit diagrams
if there is damage, I recommend using this part of the
a complete list of circuit boards and components
HP S7500/MV7500/CV7500
below 4.0 V, the ABL function will happen.
3-3-8 H/V size breathing compensation
1. Beam current is sensed as above section (3-3-7 item 2) and this voltage routes through R451, R468, C470 then through R437 to pin 31 of I401 for H. size compensation. 2. HV voltage is detected through T402(FBT) pin 11. C481, R4F4, R4F8, C430, R411, pin 5, 6, 7 of I403 (KA324) then through R302 to I401 pin 21 for V. size compensation.
3-3-9 Dynamic focus circuitry
The dynamic focus is applied to improve the corner focus performance, it includes horizontal and vertical dynamicfocus. 1. Horizontal dynamic comes from Idy current through T403, R434, C448, R428 and feed to FBT dynamic focus pin (T401 pin 12). 2. Vertical dynamic comes from pin 32 of I401 through C315, R309, R326, R322, R323, Q301, R324, R325 and feed to FBT dynamic focus pin.
3-4 Power Supply Section
3-4-1 AC Rectifier
The circuit can accept 90 V to 264 V AC input through D801~D803 bridge diodes and C808 filtering to get DC 126 V~364 V for power conversion in T802.
3-4-2
Line Filter
It consists of C803, T801, C804, C805, C808, C819, C807, C817 and meets EMI regulation.
3-4-3
Power LED Status
1. The LED has 3 leads with common cathode to emit green and amber color light for different power saving states. It is controlled by CPU. 2. Normal : Green light Amber LED is off because CPU pin 29 is 1.96V and pin 24 is 0.45V, only green LED is turned on. 3. Off Mode : Amber light CPU pin 24 is 1.87V and pin 29 is 0.46V, then green is off and amber is illuminated.
3-4-4 Auto Degaussing
When S801 turns on, pin 27 of I701 will send a signal to Q802 and turns on RL801 for degaussing. After 4 seconds, it will turn off RL801 automatically.
3-4-5 PWM Control
1. Start Up The I801 (5S0765C) gets power from R807, R808, C830 and pin 3 voltage reaches 15 V for starting up. The I801 starts oscillation at 20 kHz, pin 1 output to drive T802. Switching on, R819 set up an 15 V to keep I801 working through D809 auxiliary voltage.
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