HP LaserJet 1320 
Internal Components (2 of 4) Diagram

M3 Self Tapping Pan Head Phillips Screw - XB4-7300 M3 Self Tapping Pan Head Phillips Screw - XB4-7300 Duplexer Assembly - RM1-1313 Engine Control Unit PC Board Laser/Scanner Assembly - RM1-1470 Shutter Link Assembly - RM1-1321 Interlock Switch Assembly - RM1-1320 Duplexer Control Board - RM1-1262 M3 Truss Head Screw - XA9-1504 M3 Truss Head Screw - XA9-1504 M3 Truss Head Screw - XA9-1504 M3 Truss Head Screw - XA9-1504 M3 Truss Head Screw - XA9-1504 M3 Truss Head Screw - XA9-1504 M3 Truss Head Screw - XA9-1503 Compression Spring - RU5-2335 Fan Assembly - RK2-0428 Tag Arm - RC1-3551 Memory Tag Arm Holder - RC1-3550 Cam Arm - RC1-3544 Fan Holder Assembly - RC1-3537
REF PART # DESCRIPTION
1 RC1-3537 Fan Holder assembly - Plastic fan bezel with airflow ports - Directs airflow to the various parts of the printer - Mounts on the right side plate assembly
2 RC1-3544 Cam arm - Dogleg shaped arm - Disengages the toner cartridge drive gear when the toner cartridge access door is opened - Mounts between the access door and the main drive gear assembly
3 RC1-3550 Memory tag arm holder - Supports the tag arm assembly (toner cartridge memory reader) - Mounts towards the right end of the laser/scanner support shelf
4 RC1-3551 Tag arm - Spring loaded arm that holds the memory contact and cable (contacts the memory in the toner cartridge) - Mounts in the tag arm holder (Towards the right end of the laser/scanner support shelf)
5 RK2-0428 Fan assembly - Includes the small cooling fan and cable - Mounts in the fan housing / air flow guide on the right side plate assembly
6 RU5-2335 Compression spring - Applies downward pressure on the memory tag arm to contact the toner cartridge
7 XA9-1503 M3 truss head (Flanged) Phillips screw (Black oxide finish) - 6mm long - Typically used to secure plastic parts to the metal side plates and the engine control board to the support pan
8 XA9-1504 M3 truss head (flanged) screw - 8mm long - Typically used to secure metal assemblies to the left and right side plates
9 RM1-1262 Duplexer control board - Small PC board that mounts just above and to the left of the fan on the right side plate assembly
10 RM1-1320 Interlock switch assembly (Has mounting clips for the wireless LAN PC board for the LaserJet 1320nw) - Disables the printer when the left side cover is removed - Mounts in the upper front corner of the left side plate assembly
11 RM1-1321 Shutter link assembly - Spring loaded link which engages the shutter on the laser/scanner assembly (blocking the laser beam) when the toner cartridge access door is opened - Mounts on the left front of the laser/scanner support shelf
12 RM1-1470 Laser/scanner assembly - Mounts on the laser/scanner support shelf
13 RM1-1242 Engine control unit (ECU) PC board - Control and power supply board for the printer (For 110V to 127V operation) - Does NOT includes the power cord connector or power switch - Mounts in the bottom of the printer
RM1-1243 Engine control unit (ECU) PC board - Control and power supply board for the printer (For 220V to 240V operation) - Does NOT includes the power cord connector or power switch - Mounts in the bottom of the printer
RM1-1300 Engine control unit (ECU) PC board assembly - Includes the PC board, bottom pan, and standoffs (For 110V to 127V operation) - Does NOT includes the power cord connector or power switch - Mounts in the bottom of the printer
RM1-1462 Engine control unit (ECU) PC board assembly - Includes the PC board, bottom pan, and standoffs (For 220V to 240V operation) - Does NOT includes the power cord connector or power switch - Mounts in the bottom of the printer
14 RM1-1313 Duplexer assembly - Includes the paper guide plate, output guide rollers, and size change assembly - Slides in the opening on the lower rear of the printer
15 XB4-7300 M3 self-tapping pan head Phillips screw (Black oxide finish) - 8mm long - Used to secure the memory tag assembly to the laser/scanner support shelf