Toshiba 21E88, Service Manual

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SERVICE MANUAL
15
V saw
Terminal to be connected capacitor to generate V saw signal.
V saw amplitude is kept constant by V AGC function.
16 V OUT Output terminal for Vertical driving pulse.
17 H.VCC 9 V VCC terminal for DEF circuit. Supply 9 V.
-(For TMPA8801) Connect to GND via resister 18
YS in
(For TMPA8807)
Terminal for switching of PIP mode
PIP signal (YUV input)
1.75V
Main signal (TV/EXT/YC)
GND
Ys voltage
19 Cb input Input terminal for Cb signal.
20 Y input Input terminal for Y signal. (Input level =1 Vp-p
21 Cr input
Input terminal for Cr signal. It is recommended that input
impedance is low.
22 TV DGND GND terminal for Digital block.
23 CIN Input terminal for Chroma signal.
24
EXT CVBS/Y (V2 IN)
Input terminal for Video signal.
(Input level =1 Vp-p)
25 TV DVCC
VCC terminal for Digital block.
This terminal voltage is clipped about 3.3 V by regulator circuit.
Supply TV DVCC voltage from HVCC
(#17) voltage via 27
Ω
.
TV IN
(V1 in)
(For TMPA8801)
Input terminal for Video signal.
(Input level =1 Vp-p) 26
fsc out
(For TMPA8807) Output terminal for fsc wave signal.
(Output level =0.55Vp-p typ.)
27
ABCL
Input terminal for ABL/ACL control.
AU out
(For TMPA8801)
Output terminal for Audio signal. 28
Ew out
(For TMPA8807)
Output terminal for East-West correction signal.
29
IF VCC 9 V
VCC terminal for IF circuit.
Supply 9 V.
30
TVout
Output terminal for detected PIF signal.
(Output level =2.2 Vp-p)
31
SIF out
Output terminal for detected SIF signal.
EXT AU in
(For TMPA8801)
Input terminal for External Audio signal. 32
EXT in
(For TMPA8807)
Input terminal for EHT feedback signal.
33
H.correc/SIF in
Input terminal for H correction and 2
nd
SIF.
34 DC NF
Terminal to be connected capacitor for DC Negative
Feedback from SIF
Det output.
35
PIF PLL
Terminal to be connected with loop filter for PIF PLL.
This terminal voltage is controlled
PIF VCO frequency.
(continued)
39