Philips 107B7 manual Block diagram, 17” CDT Color Monitor

17” CDT Color Monitor 107B7

11. Block diagram

FUNCTION CONTROL

SIGNAL R		IC801	IC802	R		EHT
				G
CABLE	G	NT6812
			LM2476 O/P B		CRT	24.5KV
	B	PRE AMP
	H V				FOCUS G2 HV G1

IC101
SAA4849	Q402,T401	Q403,T402(FBT)
		HOR.O/P
	HOR. DRIVER

IC601

TDA4863A

VERT.O/P

Q907,Q908
Q909,Q910	X-RAY PROTECTION
POWER SAVING
Q406
PINCUSHION &
H-SIZE CONTROL

BLANKING CIRCUIT

				12.5V	Q909	12V
DEGAUSSING	RECTIFIED	VIN	T901	OUTPUTS	Q910
				RECTIFIE
C.K.T	& MOOTHED				Q907	6.3V
				&SMOOTH
			POWER
				6.3V	Q908
			TRANSFORME

			48V				R162
Q913	START C.K.T	RECTIFIED				R155
							LED
RY901	R939,R940
		&SMOOTH	L906
	D912
FROM	VCC
IC101		D
	IC901				29	31 13
POWER				IC101
	CONTROL
SWITCH		S
	PWM O/P
							(50V-165V
	F.B	R930	Q911		OUTPUT		VARIABLE
							B+
					RECTIFIE
LINE		R929	POWER
					&SMOOTHED
FILTER			MOSFET

		FROM
		H.O.T
	H-SYNC	H-SYNC
AC INPUT	C.K.T
		CONTROL
90V-264V

B+ PWM IC101

48