Sony TRINITRON BVM-14G1A Operation And Maintenance Manual page 177

11-2. SCHEMATIC DIAGRAMS
Board Function
FRAME (1/3) — ............................................................................................. 11-17
FRAME (2/3) — ............................................................................................. 11-18
FRAME (3/3) — ............................................................................................. 11-19
BK (1/9) Signal Selector, R.G.B Gain Control ...................................... 11-20
BK (2/9) G–Y Matrix, Y. PB/PR Mix, Signal Processor,
Blue Only SW ......................................................................... 11-21
BK (3/9) R.G.B Signal Processing, R.G.B Drive ................................... 11-22
BK (4/9) R Drive Out, R Drive IK/V Control ........................................ 11-23
BK (5/9) G Drive Out, G Drive IK/V Control ....................................... 11-24
BK (6/9) B Drive Out, B Drive IK/V Control ........................................ 11-25
BK (7/9) Pulse Generator, G2. BRT. CONTR Control .......................... 11-26
BK (8/9) H/V Sync Separator, Y/C Clamp P Generator ......................... 11-27
BK (9/9) System Control, D/A Converter .............................................. 11-28
BC (1/4) Micro Computer, Program ROM, S-RAM, Address Selector,
Parallel In/Out, Chracter Gen. ................................................. 11-31
BC (2/4) Serial Control, RS485/RS232C Interface ............................... 11-32
BC (3/4) Signal Generator, Internal Signal Data, Counter,
Closed Caption Display, PLL, D/A Converter ........................ 11-33
BC (4/4) Slot Receiver, Sample Pulse Gen., RS422 Interface,
Charactor Out, Current Limitter .............................................. 11-34
E (1/4) System Control, H BLK/V BLK P Gen., H/V Sync Gen.,
EEPROM ................................................................................. 11-37
E (2/4) Signal Gen., PWM Control, HV REG/HV Out Switching,
Dynamic Focus, Landing/NTC Out, H LIN Conv.,
D/A Converter ......................................................................... 11-38
E (3/4) Signal Generator, PWM Control, H/V Out, H LIN Amp. ....... 11-39
E (4/4) Signal Generator, CY H/CY V Out, ROT Out,
D/A Converter ......................................................................... 11-40
C R.G.B Out, BLK Out, H.STAT Out ........................................ 11-43
P F.B.T ........................................................................................ 11-44
YA Tally ......................................................................................... 11-45
YB Indicator .................................................................................. 11-45
YC Relay ....................................................................................... 11-45
HD Relay (BVM-14G1/20G1) ...................................................... 11-45
G (1/2) PFC Control, Main Rect .......................................................... 11-46
G (2/2) PWM Control, Converter Out, Protector Encoder,
D+5V. ±6V. ±15V. +120V. HT Rect. ....................................... 11-47
HA Function Control (BVM-14G5, BKM-10R) ........................... 11-49
HB Function Control (BVM-14G5, BKM-10R) ........................... 11-50
HC CPU, Memory Card Driver, RS422 Driver,
Card Address Decoder (BVM-14G5, BKM-10R) .................. 11-51
TA Mother ..................................................................................... 11-53
TB Mother ..................................................................................... 11-54
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF 50WV or
less are not indicated except for electrolytics.
Page
• Indication of resistance, which does not have one for rating elec-
trical power, is as follows.
Pitch: 5 mm
Rating electrical power 1/4W
• All resistors are in ohms. (1M: 1000kΩ, 1k: 1000Ω)
•
• Chip resister are 1/10W unless otherwise noted.
•
• ¢ : internal component.
•
• All variable and adjustable resistors have characteristic curve B,
unless otherwise noted.
• METAL CHIP (:RN, :RN-CP) resister in 1%, 0.5%, 1/4W unless
otherwise specified.
• The components identified by
have been carefully factory-selected for each set in order to sat-
isfy regulations regarding X-ray radiation.
Should replacement be required, replace only with the value origi-
nally used.
• When replacing components identified by
sary adjustments indicated, If results do not meet the specified
value change the component identified by
justment until the specified value is achieved. (Refer to page 4-1
to 4-3.)
R307, R332, R333, R336, R337,
R338, IC301, IC302, PH301
..................................... G board
R501, R502, R503, R504, R505,
R511, IC501, IC502, IC503
..................................... E board
R571, IC501 ................. E board
R901, R902, R903 ....... P board
R912, R913, IC901 .... BK board
R531, R532, R533, R534, R542,
R543, R544, R545, R548, IC071,
IC502, IC531 ................ E board
R904, R905, R906 ....... P board
• All voltages are in V.
• Reading are taken with Component color-bar signal (R.G.B SYNC)
input.
• Voltage are dc with respect to ground unless otherwise noted.
• no mark : 14G1/14G5 series and comon
(
• Voltage variation may be noted due to normal production tolerancd.
•
•
• Circled numbers are waveforms reference.
11-15 11-15
: nonflammable resistor.
: fusible resistor.
: panel designation and adjustment repair.
in this basic schematic diagram
, make the neces-
and repeat the ad-
Part replaced ( ) Checked
(+B VOLTAGE)
(HIGH VOLTAGE)
(BEAM CURRENT)
(HOLD-DOWN)
) : 20G1 series
: B+, B– line
: signal path
Reference information
RESISTOR : RN METAL FILM
: RC SOLID
: FPRD NONFLAMMABLE CARBON
: FUSE NONFLAMMABLE FUSIBLE
: RW NONFLAMMABLE WIREWOUND
: RS NONFLAMMABLE METAL OXIDE
: RB NONFLAMMABLE CEMENT
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
: ALR HIGH RIPPLE
The components identified marked ! are
critical for safety.
Replace only with the part number specified.
Les composants identifiés par une marque
! sont critiques pour la sécurité.
Ne les remplacer que par une piéce portant
le numéro spécifié.