Zenith C32V23 - 32" Flat-Screen Integrated HDTV, Service Manual

Page: 24 / 81

PV154 - 923-03497
3-2
AB - SERVICING
SERVICING
SMPS, BASIC CIRCUIT FOR MASTER SMPS
VOLTAGE SOURCES
Stand-By Voltages from MAIN SMPS:
21 V Stand by
5.1VPD Power Down Detector
15 VDBA Daughter Board
12 V TLT Through ICX3815
12 V Stand by
12 VCMP Used as a reference
15 VSB Daughter Board
5V UP Through ICX3810
72 V Stand by
72 VCMP Used as a reference
72 VSB Deflection & Scan Boost
26 V Stand by
Used for Audio Section
SWITCHED VOLTAGES FROM SWITCHED SMPS:
215 V Switched
Used for driving the Video output
100 V Switched
100 SVM Scan Velocity Modulation circuitry
33 TNR Tuner section through ZDX3881
24 V Switched
24 SVM Scan Velocity Modulation circuitry
18 HD Horizontal Drive
11 V Switched
11 CMP Used as a reference
6.2 FIL Filaments in the CRT
40 V Switched
40 CMP Used as a reference
40 HVC Compensation for HV
+15 VDF and –15VDF
These switched voltages are used for driving the vertical
circuitry and dynamic focus