31
21YF30
TROUBLE SHOOTING TABLE
(Continued)
NEITHER VERTICAL NOR
HORIZONTAL SYNCHRONIZATION
CIRCUIT TO BE CHECKED:
»
Sync. Separator Circuit.
NO VERTICAL SCAN
Vertical linearity and size are
abnormal.
Check pins(5), (6), (10) and
(11) of IC801.
DEFECTIVE VERTICAL AMP.
AND VERTICAL LINEARITY
Re-adjust vertical size.
(Bas Data)
Check IC501.
Check C511.
Check IC501 bias.
Check R503, R506, R513,
R520 and C515.
TROUBLE SHOOTING TABLE
(Continued)
NO SPECIFIC COLOUR
Is some colour produced in
B/W broadcast reception ?
Is the white balance properly
adjusted ?
Re-adjust the white balance.
The picture colour is yellow.
The picture colour is magenta.
The picture colour is cyan.
Check Q855 and its adjacent
circuits.
Check Q854 and its adjacent
circuits.
Check Q853 and its adjacent
circuits.
Check IC801 and bias
control circuit.
NO SPECIFICATION COLOUR
"PAL"
(NO COLOUR SYNCHRONIZATION)
Check IC801.
Check X801.(4.43MHz)
Summary of Contents for 21YF30
Page 32: ...21YF30 32 SOLID STATE DEVICE BASE DIAGRAM TOP VIEW SIDE VIEW ...
Page 33: ...33 21YF30 M E M O ...
Page 34: ...34 21YF30 WAVEFORMS ...
Page 35: ...35 21YF30 CHASSIS LAYOUT ...
Page 36: ...36 21YF30 1 2 3 4 5 6 7 8 9 10 A B C D E F G H I J BLOCK DIAGRAM PWB A MAIN BLOCK ...
Page 37: ...37 21YF30 10 11 12 13 14 15 16 17 18 19 ...
Page 39: ...39 21YF30 1 2 3 4 5 6 7 8 9 10 A B C D E F G H I J PWB E S CONTROL BLOCK ...
Page 42: ...42 21YF30 1 2 3 4 5 6 7 8 9 10 A B C D E F G H I J SCHEMATIC DIAGRAM MAIN Unit ...
Page 43: ...43 21YF30 10 11 12 13 14 15 16 17 18 19 ...
Page 44: ...44 21YF30 1 2 3 4 5 6 7 8 9 10 A B C D E F G H I J SCHEMATIC DIAGRAM S CONTROL Unit ...
Page 46: ...46 21YF30 1 2 3 4 5 6 7 8 9 10 A B C D E F G H I J PWB A MAIN Unit Component Side ...
Page 47: ...47 21YF30 10 11 12 13 14 15 16 17 18 19 ...
Page 58: ...Ref No Part No Description Code Ref No Part No Description Code 58 21YF30 PACKING OF THE SET ...
Page 59: ...Ref No Part No Description Code Ref No Part No Description Code 59 21YF30 ...
