Radio Shack TRS-80 Service Manual page 21

____ D_T_-_1--------TRS·BO
® _ _ _
s_e_r_v_i_c_e_M_a_n_u_a_l _ _ _ _
Yl
Y2
Crystal 12.48 MHz
Crystal 7.3728 MHz
Mechanical Parts
Sockets
84.0-9JHJ4
84.0-9,022
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Component Description Part Number
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U7
us
Ul2
U25-29
Connectors
P4
PS
Jl
J2
J3
JG
Cables
4,0-pin DIP
24-pin DIP
4,0-pin DIP
18-pin DIP
DB-25 RS-232 Connector
DB-25 RS-232 Connector
4-pin Right Angle SIP
2.0-pin Right Angle (Dual 1.0>
6-pin Right Angle SIP
34 POS Connector
Shielded CRT Cable
Power Cord
A/C Harness
Power Supply Harness Assembly
LED harness
Keyboard Cable Assembly
Main Ground Harness
Sub-Assemblies
Keyboa:1d
Video Control Sub Assembly
KTR 131B Vid~o Display
Logic Board Assembly
Power Supply, Switching
85~-9.0~2
85~-9~~1
85~-9.0~2
85~-9.0~6
851-9136
851-9136
851-9.079
851-91.07
851-91.03
851-9138
87~-9272
87~-9138
87~-9289
87~-9178
87~-9291
87.0-9271
87~-929.0
879-~515
885-8.02~
849-2.0~2
885-8.022
879-.0~21
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