Panasonic TX-21S1T Service Manual page 12

X= 2151 1/1 C-2151R_
VEC SSCL
[DIODE —_[TRANS. [TEST NO.
AAR TOR Ma
oO¢
DO6-Ci Qdg-—-C3
D15—C1 Q08—-D3 TPP24—C4
DO3—-D1 Q10-—D3 TP32—-C4
SCHEMATIC DIAGRAM FOR MODELS
TX—21S1T / TX-21S1R / TX-14S1T / TC-14S1R
(Z—5 CHASSIS)
IMPORTANT SAFETY NOTICE
Components identified by /\ mark have special characteristics
en eee ae pees ae og ape i re epee rent sen comsonss important for safety. When replacing any of inese componenis,
use only manufacturer's specified parts.
1. RESISTOR 7. => Indicates the Video signal path
6 All resistors are carbon %4W resistor, unless marked.
Die=B) .Qi2-B4 4 TPi7 Tes Unit of resistance is OHM (@) (K=1,000, M=1,000,000). <5 __ indicates the Audio signal path
ede ella sia oO = Noutennene Xx a Metal Oxide =_> Indicates the Vertical/Horizontal signal path
Di4-C2 Q14—-D5 |TP18-D4
© : Metal Film @) : Fuse onal' p
/Dos—C2 | I.C.'s errr as L_] : Wire Wound A : Solid 8. This schematic diagram is the latest at the time of printing
DIs—C2 pacasicd, |
me 'ge °: 7
2 CAPACITOR
and is subject to change without notice.
DO8—C2 ICO6—B2 All capacitors are ceramic 50V capacitors, unless marked Remarks:
6: \Fara= pa Gog2 63 5. Unit of capacitance is yF, unless otherwise stated. 1. Care must be taken when servicing this receiver, as it uses
[o11-D4_[icos—c3
'3. . ~" : Temprature Compensation
@) : Polyester a HOT chassis. The circuit is defined by HOT and COLD
Nas octal 1C3501—C4 4ch8 —
indications in the schematic diagram. Take the following
=a 1c04—D5 ; 2 Roe am: : Polypropylene @) : Dipped Tantalum precautions. All circuits except the Audio, Video input
= e. NP .r circuits are HOT.
rr Slama ie ty- : Electrolytic —- : Bipolar
"THO ict , 2. Precautions
° @) : Metallised Polyester @ _ :z-1pe a. Do not touch the hot part, or the hot and cold parts of the
3 COIL chassis, at the same time, as you are liable to a shock
4 Unit of inductance is nH, unless otherwise stated. nee
b. Do not short—circuit the hot and cold circuits as electrical
4. TEST POINT
° Test Point position {Pevetorm Test Point position components may be damaged.
c. Donotconnect an instrument, such as an oscilloscope, to
Z yeas eats a Id Line Earth (Hot the hotand cold circuits simultaneously, as this may cause
=| assis E a r t h (Cold) | Line E a r t h (Hot) fuse failure. Connect the earth of the instruments to the
6. VOLTAGE MEASUREMENT earth connection of the circuit being measured.
ae ies diisaplar inlay DG voltmeter. Measurement d. Make sure to disconnect the power plug before removing
Power source ............05- AC 220 / 240V, 50Hz Mena:
3 = Receiving Signal ............ Colour Bar signal (RF)
> E: S All customer controls ........ Maximum position
Rass ®
' Le
ws G0 — C026...
" —' D '
C 1 2 3 + yy ROS
—_ "of 3 F a = °
: - '@ "FarnaeRez =. |
5 eo" cath if ee