Parker TU2191, Руководство по обслуживанию

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VII. Main IC Introduction
Serial
no. Position
no. Model Function
1 N103
8899CPBNGXXX CPU
2 N102 ATME24C08
Memory
3 N801 HM14053N
Logic conversion integrated block
4 N451 STV8172
Field scanning integrated block
5 N701 AN17821A
Sound power amplifier
6 N502 STR-W6556A
Power integrated block
7 TU201 ET-5C511-M04
Tuner
VIII. Notes for Factory Debugging
1. Enter/exit factory mode
A. 1) Use factory remote control to enter factory mode
Use factory remote control:
Press FA key (Factory key) once to enter the factory debugging menu directly.
2) Use user remote control to enter factory mode
In TV state, press the “Menu” key, the main menu appears, then press the number keys
“2”, “4”, “8” and “3”.
Note: stop 2 to 3 seconds between “4” and “8”.
B. Method to return to the factory mode
A. User remote control:
1) Press DISP to directly return to the factory debugging menu.
2) Press the power key to return to the factory state. When start again, the device
Pin Symbol Pin name Function
1 D Drain terminal Transistor drain electrode
2 — — —
3 S/GND Source electrode /
grounding terminal Transistor electrode / grounding
4 Vcc Power input terminal Control power input
5 SS/ADJ Soft-Start over-current
protection terminal
Over-current protection adjustment and
Soft-Start time adjustment
6 FB Feedback terminal Fixed voltage control signal input,
intermittent oscillating control.
7 BD Bottom detection terminal Bottom detection signal input and external
latch signal input.