Heathkit H 19 Schematic

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7 ~0NLY»WLWA

SCHEMATIC OF THE

HEATHKITo
VIDEO TERMINAL A
MODEL H19
NOTES:
1. COMPONENT NUMBERS ARE IN THE FOLLOWING GROUPS-

1- 9! PARTS MOUNTED ON THE CHASSIS.
101-199 PARTS MOUNTED ON THE POWER SUPPLY CIRCUIT
BOARD.
201-299 PARTS MOUNTED ON THE VIDEO CIRCUIT BOARD,
3014?? PARTS MOUNTED ON THE KEYBOARD CIRCUIT BOARD.
401-499 PARTS MOUNTED ON THE LOGIC CIRCUIT BOARD.

2. RESISTORS MOUNTED ON THE VIDEO CIRCUIT BOARD ARE
III-WATT, 5% UNLESS MARKED OTHERWISE. RESISTORS
MOUNTED ON THE LOGIC CIRCUIT BOARD ARE TIA-WATT, 5%
UNLESS MARKED OTHERWISE. RESISTOR VALUES ARE IN
OHMS (k-I.000; M-I,000,000).

3. ALL CAPACITORS ARE IN uF UNLESS MARKED OTHERWISE.

4. E THIS SYMBOL INDICATES CHASSIS GROUND.
5. V THIS SYMBOL INDICATES CIRCUIT BOARD GROUND.
6. E] THIS SYMBOL INDICATES WHERE A WIRE CONNECTS

TO A CIRCUIT BOARD.
7. 9% THIS SYMBOL INDICATES A MECHANICAL CONNECTOR.

THIS SYMBOL INDICATES A PART THAT IS SHOWN ON
A CIRCUIT BOARD, BUT IS ACTUALLY MOUNTED ON
THE CHASSIS.

THIS SYMBOL INDICATES AN INTERRUPTED LINE. LAV
A STRAIGHT EDGE ON THE ARROW TO SEE WHERE IT
GOES TO OR COMES FROM.

I 0

IO. O THIS SYMBOL INDICATES A DC VOLTAGE TAKEN WITH
A HIGH IMPEDANCE VOLTMETER FROM THE POINT
INDICATED TO CHASSIS GROUND. VOLTAGES MAY
VARY 120%.

I1. FUSE El IS CRITICAL FOR CONTINUED SAFETY. REPLACE IT
HEATH PART,

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(Rights Rename]

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Part of 595~2284-04

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