Sony KV27FV16 service manual Circuit Board Locations, Printed Wiring Boards and Schematic Diagrams

6.2 CIRCUIT BOARD LOCATIONS

HX Board

R567,CT03,DY,47D1720,T50PartC51,05,CRT,ReplacedL510,D18DIC501,09,C546,(1C507,95,C537,T504,R56)0,				(R564)HVAdjustmentHOLD-DOWN( )
1	62	63R65	6	B+VOLTAGE
IC301.............................R525		MAABoardBoard

KV-27FV16/29FV16/29FV16C/32FS12/32FS16

A BOARD IC BLOCK DIAGRAMS

A BOARD: IC401 TDA7057AQ/2 (KV-32FS12/32FS16 ONLY)

VP

4

CA Board

VA Board

	HA Board
	D Board
HB Board	A Board
BC Board	P Board MA Board K Board

6-3. PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

•All capacitors are in ∝ F unless otherwise noted. pF: ∝∝ F 50 WV or less are not indicated except for electrolytic and tantalums.

IC601,PH601 ABoard CONFIRMATION

• All voltages are in Volts

•Voltage is DC with respect to ground unless otherwise noted.

•	Readings are taken with a 10MΩ digital multimeter.
• Readings are taken with a color-bar signal input.
•	Voltage variations may be noted due to normal
	production tolerance.

•Circled numbers are waveform references.

•* : cannot be measured

•: B + Line

•----- : B − Line

• : Signal path

				I + i
3	Input 1
1	DC Volume Control 1		+	1
			–
				I – i
		STABILIZER	TEMPERATURE
			PROTECTION
		VREF
				I + i
5	Input 2
	DC Volume Control 2		+	2
7
			–
				I – i
		Signal		Power	Power
	n.c.	Ground		Ground 1	Ground 2
				12

13 Positive Output 1

11 Negative Output 1

10 Positive Output 2

8 Negative Output 2

A BOARD: IC502 TDA8172

• All electrolytics are 50V unless otherwise specified.

Reference Information

2 6 9

(ALL EXCEPT 32FS12/32FS16)

•	Indication of resistance, which does not have one for
	rating electrical power, is as follows:
	Pitch: 5mm
	Rating electrical power 1/4W (CHIP: 1/10W)
•	All resistors are in ohms.

KΩ = 1000Ω MΩ = 1000KΩ

RESISTOR :	RN	METAL FILM
:	RC	SOLID
:	FPRD	NON FLAMMABLE CARBON
:	FUSE	NON FLAMMABLE FUSIBLE
:	RW	NON FLAMMABLE WIREWOUND
:	RS	NON FLAMMABLE METAL OXIDE
:	RB	NON FLAMMABLE CEMENT
:		ADJUSTMENT RESISTOR

A BOARD: IC402 TDA8580Q/N1 (ALL EXCEPT 32FS12/32FS16)

• : nonflammable resistor

• : fusible resistor

•	:		internal component
•		: panel designation and adjustment for repair
•	:		earth-ground
•	:		earth-chassis

COIL	:	LF-8L	MICRO INDUCTOR
CAPACITOR	:	TA	TANTALUM
	:	PS	STYROL
	:	PP	POLYPROPYLENE
	:	PT	MYLAR
	:	MPS	METALIZED POLYESTER
	:	MPP	METALIZED POLYPROPYLENE
	:	ALB	BIPOLAR
	:	ALT	HIGH TEMPERATURE

7

IN 1

			60
			k
			TDA8580Q/N1
8
IN 2
			60
	V	px	k

	VP1	VP2
	3	15
+			45 k
	V/l	-
-			OA
		+
+		+	OA
	V/l	-
-			45 k
	Vpx

1

OUT 1 +

4

OUT 2 -

A BOARD: IC502 STV9379 (KV-32FS12/32FS16 ONLY)

•All variable and adjustable resistors have characteristic curve B, unless otherwise noted.

•The components identified by in this manual have been carefully factory-selected for each set in order to satisfy regulations regarding X-ray radiation. Should replacement be required, replace only with the value originally used.

•When replacing components identified by , make the necessary adjustments indicated. If results do not meet the specified value, change the component identified by and repeat the adjustment until the specified value is achieved (refer to Safety Related Adjustments on page 20).

•When replacing parts shown in the table below, be sure to perform the related adjustments.

Note: : ALR HIGH RIPPLE

The components identified by shading and mark are critical for safety. Replace only with the part number specified.

The symbol (displayed on component side of the circuit board) indicates fast operating fuse. Replace only with fuse of the same rating as marked.

Les composants identifiés per un tramé et une

marque sont critiques pour la sécurité. Ne les remplacer que par une piéce portant le numéro

spécifié. Le symbole indique une fusible a action rapide. Doit etre remplacee par une fusible de meme yaleur, comme marque.

		30 k
		BUFFER
		60
	10	k
IN 3
IN 5	12
		60
	11	k
IN 4
MUTE	13
STANDBY	5	INTERFACE

	45						OUTPUT
	k			9		SUPPLY	STAGE	FLYBACK
			BUFFER		BUFFER	VOLTAGE	SUPPLY	GENERATOR
	45					2	6	3
	k
+			45 k					FLYBACK
	V/l		- OA	14
-					OUT 3 -			GENERATOR
			+
			+		INVERTING	1
+				17	INPUT
			OA		OUT 4 +		POWER
-	V/l		-					5 OUTPUT
							AMPLIFIER
			45 k		NON-INVERTING
						7
					INPUT			THERMAL
			DIAGNOSTIC	6	DIAG			PROTECTION
	2	16					4
PGND1		PGND2					GND

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