Read Panasonic TX-14B4TC / TX-14B4TF / TC-14B4RC / TC-14B4B / TC-14B4RF Service Manual online
SECAM L/L’ (F MODELS)
PAL B/G , 525/60
NTSC (AV only)
CATV S21-S41 (HYPERBAND)
40,4MHz, 32,4MHz (A2 STEREO)
33,05MHz, 34,05MHz (NICAM)
32,66MHz, 32,4MHz (CZECH STEREO)
34,5MHz, 34,65MHz (SECAM)
AV1 IN Video (21 pin)
Audio (RCA x 1) 500mV rms 10k
2 x R6 (UM3) Batteries
Weights and dimensions shown are approximate.
all parts that have been overheated or damaged by
the short circuit.
and isolation R-C combinations are correctly
without the rear cover involves the danger of a shock
hazard from the receiver power supply. Servicing
should not be attempted by anyone who is not
familiar with the precautions necessary when working
on high voltage equipment. Always discharge the
anode of the tube.
to shock hazard.
3. Measure the resistance value with an ohmmeter,
metallic cabinet part on the receiver, such as screw
heads, aerials, connectors, control shafts etc. When
the exposed metallic part has a return path to the
chassis, the reading should be between 4M ohm and
20M ohm. When the exposed metal does not have a
return path to the chassis, the reading must be
such as a water pipe.
specified, there is a possibility of a shock hazard, and
the receiver should be repaired and rechecked before
it is returned to the customer.
calibrated high voltage meter.
2. Measure the high voltage. The meter should indicate
If the meter indication is out of tolerance, immediate
service and correction is required to prevent the
possibility of premature component failure.
Service mode is entered by selecting the “mute” remote key and local “down” simultaneously with the sharpness DAC set to
Minimum and programme position 99 selected.
Service mode 2 is selected by pressing the Recall remote key while in service mode 1.
Service mode navigation
- Up /Down remote keys :cycle through the service items available.
- -/+ remote keys :Decrement/Increment the values within range.
- TV/AV :Store the current data.
- 0 – 7 digit keys :Toggle bits 0-7 in option byte (service mode 2).
From this setting, increase brightness by 11 steps and reduce sharpness to minimum.
Tune a colour bar signal on Prg 99 and enter into SVC mode. In SVC mode , select “G2” item
and press – or + remote key to control software disable vertical deflection. The user must then
adjust G2 voltage on FBT, to find the point where LED is ON. Press – or + remote key to return
to normal SVC mode.
- Select a bright picture, set Blue Drive to 32 and adjust Red Drive, and Green Drive to the
desired colour temperature.