3-2
2. Test & debug flow
Yes
Yes
Yes
Yes
No
Switch on the Power PCBA.
Replace FLASH.
Check the POWER PART.
No
Check the POWER PART.
No
Check the regulators or diode.
No
1. Check 27MHz system clock.
2. Check system reset circuit.
3. Check FLASH R/W enable signal PRD, RWR.
4. Check FLASH Memory related circuit.
Check the
AC voltage
Power PCBA (110V
or 220V).
Update
FLASH
successfully?
Are 3.5V and 5V DC
outputs normal on main
PCBA?
Are the
DC Voltage
outputs OK? (12V, 5.6V,
3.5V, 5V,7V, 34V).
TEST.
A
Summary of Contents for ZH-T202SF Series
Page 9: ......
Page 13: ......
Page 14: ...2 4 2 5 WIRING DIAGRAM 061026...
Page 15: ...2 6 2 7 BLOCK DIAGRAM 061026...
Page 17: ...2 10 2 11 2 COM MAIN CIRCUIT DIAGRAM 061026...
Page 18: ...2 12 2 13 3 MOTOR SERVO CIRCUIT DIAGRAM 061026...
Page 19: ...2 14 2 15 4 I O CIRCUIT DIAGRAM 061026...
Page 20: ...2 16 2 17 5 MIC CIRCUIT DIAGRAM 061026...
Page 21: ...2 18 2 19 6 FRONT JACK CIRCUIT DIAGRAM 070102...
Page 22: ...2 20 2 21 7 FRONT CIRCUIT DIAGRAM 061026...
Page 23: ...2 22 2 23 PRINTED CIRCUIT BOARD DIAGRAMS 1 MAIN P C BOARD DIAGRAM TOP VIEW...
Page 24: ...2 24 2 25 2 MAIN P C BOARD DIAGRAM BOTTOM VIEW...
Page 26: ...2 28 2 29 4 FRONT JACK P C BOARD 5 FRONT P C BOARD...
Page 27: ......
Page 46: ...3 19 2 Y IC501 PIN 113 FIG 11 2 1 Audio L R FIG 12 1 12 AUDIO OUTPUT FROM PWM IC IC701 PIN 1 7...
Page 49: ......
Page 50: ...061026 3 23 3 24 DVD AMP CIRCUIT DIAGRAM 1 MPEG CIRCUIT DIAGRAM...
Page 51: ...061026 3 25 3 26 2 DSP AMP CIRCUIT DIAGRAM...
Page 56: ...5 2 4 LHS 96SB PASSIVE SUBWOOFER SPEAKER SH22SF WY 950 WIRE90 951 952 953 954 A90...
Page 57: ......