Zenith H19F34DT Series, Service Manual

DEG-CTRL

PWR-CTRL

+11LSP

+11
LSP

+VM

+12
VSB

+12VSB

+12
VSB

+12
VSB

+12HDR

+12

HDR

+VM

+VM

+12
VSB

+VL

SW

+8V

+14VSB

+14
VSB

+VL

+12
VSB

+VL

+VL

+13VAUD

AUD

+13V

+14VAUD

AUD

+14V

VSB

+14V

SW

+8V

+9VSW

SW

+9V

+5VSW

SW

+5V

+8.7VSB

VSB

+8.7

+8VSW

+8V

SW

+5VSB

+5

VSB

+12
VSB

SW

+9V

VE

VE

+5VTNR

TNR

+5V

+35V

B+

B+

VE

VE

LX3833

220µH

FH3400A
431-813A

CX3622

1000V

470pF

CX3620

1000V

470pF

FH3400B
431-813A

S

F

LX3852

150-C02F

82µH

QX3900

E

B

C

0TR322809AA

KTC3228-0

CX3400

2200pF

4KV

3

4

1

2

ICX3500

0ILI817000G

LTV817M

3

4

1

2

ICX3700

0ILI817000G

LTV817M

DX3611A

RU4AM

0DD410000AD

1

OUTPUT

CB

8

GND

INPUT

5

4

ON/OFF

6

7

FB

ICX3870

0ICTMNS001A

LM2675N-ADJ

BRX3400A

D2SBA60(STK)

0DD260000BB

BRX3400

D5SB60

0DD560000AA

KX3900

12V

DG12D1-O(M)

141-018E

1

2

3

CN4R8

366-043C

10K

10K

QX3500

KRC102M

E

B

C

0TR102009AB

DX3612

D4L20U

0DD420000BB

DX3600

0DD100009AM

EU1ZV(1)

DX3601

0DD414809ED

1N4148

DX3602

0DD414809ED

1N4148

CX3611

160V

220µF

DX3900
0DD414809ED

1N4148

VRX3400

560V

164-003D

1

2

CN4T8

366-043B

THX3902

PROV

5

4

3

2

1

ICX3612

STR-F6456R

GND

VIN

P/L

4920V00085A

D

S

P/L

FB3600

BFD3565R2F

125-123A

FB3601

BFD3565R2F

125-123A

CX3601

1KV

270pF

CX3623

1000V

470pF

CX3621

1000V

470pF

CX3701

50V

220pF

CX3702

50V

0.047

CX3853

50V

0.01

CX3402
0.01

CX3613

16V

1000µF

DX3611

MUR860

4921V00N11V

0DRON00182A

408-002E

THX3410

KL15L2R5

163-048D

PROV

RX3853

1/2W

10K

RX3850

1%

1.6K

RX3400

1/2W

8.2M

RX3600

2W

56K

RX3603

680

RX3604

3.3K

RX3605

1.8K

RX3700

1.5K
1/2W

RX3701

1.5K

1/2W

RX3702

560K

RX3900

4.7K

RX3500
1.5K
1/2W

RX3501

2.2K

RX3852

1/2W

10

CX3404

1000V

1000pF

CX3405

1000V

1000pF

CX3415

250V

P/L

CX3602

50V

470pF

CX3854

50V

470pF

FX3610

125V

3A
SLOW BLOW

Type MS3

MFD BY BELL FUSE

0FS3001A282

FX3613

125V

3A
SLOW BLOW

Type MS3

MFD BY BELL FUSE

0FS3001A282

R

C

A

ICX3701
P/L
P/L

LX3400

P/L

LX3851

47µH

RX3705
JUMPER
0.1%

RX3851

1%

15K

RX3410

5W

0.68

DX3613

D4L20U

0DD420000BB

DX3610

D4L20U

0DD420000BB

CX3604

470pF

50V

CX3605

100pF

50V

CX3610

35V

1000µF

CX3850

35V

1000µF

ZDX3710

MTZ5.1B

5.1V

1/2W

0DZ510009AB

QX3711

E

B

C

KSC2330-Y

0TR233009CA

S

F

LX3612

150-C02F

82µH

S

F

LX3820

150-C02F

82µH

QX3510

E

B

C

KTA1046YU

0TR104600AB

RX3511

10K

RX3512

1/2W

2.2K

RX3610

1/2W

8.2K

10K

10K

QX3505

E

B

C

KRC102M

0TR102009AB

RX3505

2.2K
1/2W

RX3810

2W

2.2

CX3822

16V

220µF

CX3811

16V

470µF

ICX3810

KIA78R09PI

GND

GND

OUT

IN

CTL

CTL

0IMCRKE002A
408-002F

4921V00163A

ZDX3821

MTZ5.1B

1/2W

5.1V

0DZ510009AB

ICX3830

KIA78R08PI

GND

GND

OUT

8V

IN

CTL

CTL

0IMCRKE001A

RX3831

4.7K

LX3840

220µH

CX3831

16V

470µF

ICX3835

KIA78L05BP(AT)

IN

OUT

GND

GND

5V

150mA

0IKE780500P

ICX3840

KIA78L05BP(AT)

IN

OUT

GND

GND

5V
150mA

0IKE780500P

RX3830

2W

2.2

CMX3815

16V

0.1

CMX3830

16V

0.1

CMX3835

16V

0.1

CX3836

10V

220µF

CX3841

10V

220µF

CMX3810

16V

0.1

RX3815

2W

2.2

R

C

A

ICX3710

0ICTMFA001A

KA431LZ

RX3611

1/2W

100K

FB3610

125-022K

1µH

ICX3816

KIA78L05BP(AT)

IN

OUT

GND

GND

5V

150mA

0IKE780500P

CX3816

10V

P/L

FB3611

BFD3565R2F

125-123A

RX3811

1/2W

2.2K

1

2

3

4

DMX3851

MBRD835LT4

0DRON00198A

CX3703

50V

0.1

CX3840

16V

470µF

CX3851

50V

0.1

CX3852

50V

0.1

FX3612

125V

3A
SLOW BLOW

Type MS3

MFD BY BELL FUSE

0FS3001A282

CX3801

160V

100µF

S

F

LX3611

150-C02F

82µH

FB3600A
125-022K
PROV

FB3601A

125-022K

PROV

FB3611A

125-022K

PROV

FRX3815

1/2W

5.6

FRX3840

1/2W

5.6

SPGND
387-917F

ICX3815

KIA78R05PI

GND

GND

OUT

IN

CTL

CTL

5V

0IKE7805001

RX3606

10

1/2W

RX3704
162K
0.1%

RX3706
P/L
1%

RX3710

12K

1%

RX3711

22K

1%

RX3712
22K
1/2W

RX3713

5W

6.8K

RX3714

5W

6.8K

RX3715
68K
1/2W

RX3716

1.6K

1%

RX3717
120K

RX3812

1/2W

6.8K

RX3816

P/L

RX3820

2W

P/L

RX3832

10K

THX3901

6322V62206A

7

5

17

8

6

14

12

16

4

10

2

9

3

TX3601

6170VMCA042

ZDX3810

GDZJ18B

1/2W

18V

0DZ180009BE

ZDX3826

MTZ3.6B

1/2W

3.6V

0DZ360009DA

RX3601

2W

0.12

CX3612

35V

1000µF

CX3603

35V

220µF

CX3855

16V

470µF

CX3856

16V

470µF

RX3703
3.57K
0.1%

FB3613

6200JB8011R

0.273µH

FB3612

6200JB8011R

0.273µH

DX3800

RGP15J

0DR150009EA

DX3801

RGP15J

0DR150009EA

FX3400

Type 218 005

250V

5A

SLOW BLOW

Mfd by Littelfuse

0FS5001B51D

CX3401

275VAC

0.47

CX3600

2000V

2200pF

TP3401

TP3400

TP3900

TP3901

COLD

HOT

HOT

COLD

COLD

HOT

HOT

COLD

COLD

HOT

Type 218 004

(25,27,32V)

(19,20V)

0FS4001B51D

(32V)

SANKEN
STR-F6654R (19,20,25,27V)

4A  250V

D-CTL

WF2

WF1

1

2

3

4

5

6

7

8

9

10

G

D

C

B

E

F

A

Power Supply Circuit

Power Control

Deg-Ctl

D-CTL

This schematic refers to 

CL Chassis models

H19F34DT
H20F34DT
H25F34DT
H25F39DT
H27F34DT
H27F39DT
H25F36DT
H27F36DT
H32F36DT

CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X” IN THEIR
COMPONENT DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.

ALL SYMBOLS WITH “M” IN THE DESIGNATOR
INDICATE SURFACE MOUNTED COMPONENT.

6-1

WF2

20.4 V

2.50 

µ

S

WF1

416 V

5.00 

µ

S

SR25-3828VD0171B