Sony KD-34XBR2 Training Manual page 22

Pin -
Name
1 - Sense ON/OFF input for the IC. IC ON = 1.5-
7Vdc.
2 – F/B Feedback control voltage for regulation.
Needs bias current feed of 80uA min.
Open circuit triggers IC shutdown.
3 - Ct Determines Oscillator minimum freq
4 – Rt Determines Oscillator minimum freq
6 - Timer External cap sets delay time to enter high
freq, low voltage output (protect state).
After four entry' s, the osc stops but can
be reset by removing Vcc (pin 8) voltage.
7 - SS External cap determines initial start freq.
(200kHz in this TV).
Protection
See Chart 6-5 below. IC6001 stops operating and enters a protective stage when:
Protection Cause
1. Input V Sense input voltage too high
2. Primary PS Output too high
3. No regulation feedback (error voltage) *
4. Excessive Driver current(Q6001,2)
5. IC temperature
* IC Output does not stop. Oscillator output changes from continuous normal operation to output bursts
RESET IC6001 = Unplug the AC line cord, (or shut off the TV if you can determine that) and wait 10 seconds.
Chart 6-4 - IC6001 (MCZ3001D) Pin Description
Description
Chart 6-5 - IC6001 enters a protective state
IC6001/pin 1
IC6001/pin 8 (VC1)
IC6001/pin 2
IC6001/pin 9
Diode Internal to IC6001
6. Primary Power Supply - HA-3 & RA-5a Chassis
Pin -
Name
8 – VC1 Power for IC. Input voltage limits = 15.6V
– 33V
9 - OCP When input voltage reaches 0.2Vdc, the
IC momentarily enters high freq, low
voltage output. Max = 5Vdc
10 – VC2 10.5dc Output (regulated from VC1) & low
driver (pin 12) pwr.
14 - VB 10.5dc Input for high driver (pin 16).
15 - VS Reference for high side driver.
18 - VD Start up voltage for VC1, low & high
drivers internal to the IC. Max =
600V/12ma
Location
3V
15Vdc
1.86Vdc
0Vdc
?
19
Description
Normal Trip
8.3V
33Vdc
0V (open)
+0.2Vdc
155 C